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Metonymies are more literal than metaphors: evidence from ratings of German idioms

Published online by Cambridge University Press:  27 May 2019

DIANA MICHL*
Affiliation:
Department Linguistik, Universität Potsdam
*
Address for correspondence: Department Linguistik, Universität Potsdam, Karl-Liebknecht-Str. 24-25, Haus 14, II.14.201, 14476 Potsdam. e-mail: [email protected]
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Abstract

Metaphor and metonymy are likely the most common forms of non-literal language. As metaphor and metonymy differ conceptually and in how easy they are to comprehend, it seems likely that they also differ in their degree of non-literalness. They frequently occur in idioms which are foremost non-literal, fixed expressions. Given that non-literalness seems to be the defining criterion of what constitutes an idiom, it is striking that no study so far has focused specifically on differing non-literalness in idioms. It is unclear whether and how metaphoric and metonymic structures and their properties are perceived in idioms, given that the comprehension of idioms is driven by a number of other properties that are connected. This study divides idioms according to their metonymic or metaphoric structure and lets participants rate their non-literalness, familiarity, and transparency. It focuses on non-literalness as key property, finds it strongly connected to transparency, and to be the one key factor in predicting idiom type. Specifically, it reveals that metonymies are generally perceived as rather or even extremely literal, while metaphors are generally perceived as highly non-literal.

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Article
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © UK Cognitive Linguistics Association 2019

1. Introduction

Metaphor and metonymy are fundamental thought patterns that structure our conceptual thinking and language use (Barcelona, Reference Barcelona1997; Glucksberg & Keysar, Reference Glucksberg and Keysar1990; Lakoff & Johnson, Reference Lakoff and Johnson1980; Radden, Reference Radden and Barcelona2003, Reference Radden, Otal, Navarro i Ferrando and Bellés Fortuño2005). In a metaphor such as to swim against the current, what is said (current in a body of water) stands for something literally unrelated (a ‘general trend’). In a metonymy such as to have an eye for detail, eye refers to something that is literally or immanently related or part of the same concept (i.e., ‘ability to see details’). General consensus today is that metaphorically used words or phrases refer to a target in a distinct semantic concept, thus functioning in between two concepts or domains – whereas metonymically used words or phrases refer to a target within the same semantic concept (see also Kövecses & Radden, Reference Kövecses and Radden1998; Lakoff & Johnson, Reference Lakoff and Johnson1980; Ruiz de Mendoza Ibánez, 2003; Spieß & Köpcke, Reference Spieß and Köpcke2015; Turner & Fauconnier, Reference Turner, Fauconnier and Barcelona2003). Hence metonymy is based on a contiguity relationship between what is said and what is meant (Annaz, van Herwegen, Thomas, Fishman, Karmiloff-Smith, & Rundblad, Reference Annaz, van Herwegen, Thomas, Fishman, Karmiloff-Smith and Rundblad2009; Feyaerts, Reference Feyaerts and Barcelona2003; Bartsch, Reference Bartsch, Dirven and Pörings2002; Croft, Reference Croft1993; Dirven, Reference Dirven, Dirven and Pörings2002; Klepousniotou, Reference Klepousniotou2002) while metaphor is based on a similarity or analogy relationship (see also Barnden, Reference Barnden, Ahmad, Brewster, Stevenson and Wilks2007; Bartsch, Reference Bartsch, Dirven and Pörings2002; Bortfeld & McGlone, Reference Bortfeld and McGlone2001; Bowdle & Gentner, Reference Bowdle and Gentner2005; Coulson & Matlock, Reference Coulson and Matlock2001; Gentner, Bowdle, Wolf, & Boronat, Reference Gentner, Bowdle, Wolff and Boronat2001; Ortony, Reference Ortony and Ortony1979). Metonymy is often suggested to be more basic to cognition and also easier to learn and comprehend than metaphor (Goossens, Reference Goossens and Goossens1995; Taylor, Reference Taylor1995).

A vast number of studies have examined the processing of metaphors, significantly fewer have examined the processing of metonymies, and very few have compared them directly. In summary, experimental research suggests that metonymies are indeed easier to acquire and comprehend than metaphors: both adults (Rundblad & Annaz, Reference Rundblad and Annaz2010; see also partially Klepousniotou, Reference Klepousniotou2002, and Weiland, Bambini, & Schumacher, Reference Weiland, Bambini and Schumacher2014) and young children (Annaz et al., Reference Annaz, van Herwegen, Thomas, Fishman, Karmiloff-Smith and Rundblad2009) show faster comprehension and production with fewer errors in metonymies than metaphors.

Metaphors and metonymies can be conventionalized, which facilitates their comprehension. As such, they are found in many idioms (as implied by the term ‘frozen metaphors’ falsely used as a synonym for idioms in, for example, Handford & Koester, Reference Handford and Koester2010; Ortony, Schallert, Reynolds, & Antos, Reference Ortony, Schallert, Reynolds and Antos1978). Idioms are syntactically complex, more or less fixed expressions (Sailer, Reference Sailer2013) such as to throw in the towel, to hit rock bottom, to drink somebody under the table, or to lose one’s heart to somebody. They are a highly pervasive language phenomenon: speakers are estimated to use 7,000 idioms per week (Hoffman, Reference Hoffman1984). Multiword expressions, including idioms, are believed to be stored in long-term semantic memory as complete units. This is mirrored by ample evidence of their processing advantage over non-idiomatic language (Gibbs & Gonzales, Reference Gibbs and Gonzales1985), at least when they are presented in canonical chunks (Conklin & Schmitt, Reference Conklin and Schmitt2008; Schmitt & Underwood, Reference Schmitt, Underwood and Schmitt2004) and are equally familiar to a recipient (Libben & Titone, Reference Libben and Titone2008; Schweigert, Reference Schweigert1986). Faster processing indicates that idiomatic meanings are not entirely put together from their individual constituents upon being encountered (see also Keysar & Bly, Reference Keysar and Bly1999), but that comprehension is automatized to a certain extent.

Moreover, priming effects exist between idioms and words semantically or conceptually related to the idiomatic meaning (Cacciari & Tabossi, Reference Cacciari and Tabossi1988; Sprenger, Levelt, & Kempen, Reference Sprenger, Levelt and Kempen2006; Titone, Holzman, & Levy, Reference Titone, Holzman and Levy2002). This is evidence that, despite a certain degree of automatized comprehension, idiomatic meanings are semantically or conceptually accessed upon being encountered. Conceptual and semantic priming effects for conventional metaphors (which are often idiomatic) suggest that metaphoric structures affect processing (Coulson & Van Petten, Reference Coulson and Van Petten2002; Lai & Curran, Reference Lai and Curran2013; Lai, Curran, & Menn, Reference Lai, Curran and Menn2009). Ultimately, there is no study to our knowledge that examines the processing or perception of metaphoric or metonymic structures in idioms directly. It remains open whether metaphoric or metonymic structures are in fact processed in idioms or influence processing ease and, more fundamentally, whether metaphoric idioms are even differently perceived than metonymic idioms. As metaphor and metonymy differ conceptually and in how easy they are to comprehend, it seems likely that they also differ in their degree of non-literalness. As non-literalness is generally seen as a crucial property of idioms, exploring the properties of metaphoric compared to metonymic idioms should include exploring their non-literalness. This study aimed to distinguish metonymic from metaphoric idioms by this very property. We performed four separate rating surveys to investigate whether native speakers perceive a difference in non-literalness between metonymic versus metaphoric idioms, and how non-literalness is linked to other idiom-typical properties.

1.1. non-literalness in metonymic and metaphoric idioms

Metaphors link distinct semantic concepts or domains (Barcelona, Reference Barcelona2003; Lakoff & Turner, Reference Lakoff and Turner1989; Sweetser, Reference Sweetser1990) while metonymies work within one semantic concept or domain. Thus it seems that what is said is likely cognitively or semantically closer to what is meant in a metonymy than in a metaphor. This implies that there is a systematic difference in how literal metonymies are in comparison to metaphors. Consider someone expressing that a friend has a unique sense of fashion by saying Sarah always swims against the current. The ‘water current’ stands for the literally unrelated ‘sense of fashion’, and the swimming defines the action and adds meaning in the context of the water current. Hence the speaker does not intend this sentence to be understood literally at all. It can be concluded that this idiom – when used in its idiomatic sense – is highly non-literal. Consider the speaker wanting to express that a friend has a talent for being attentive to minor things: Sarah has an eye for detail. In this situation, the speaker uses eye to refer to a skill that is directly related to seeing or discovering by looking. The physical organ ‘eye’ – as in eyeball, eyelid, etc. – is not the strictly intended meaning in this sentence but it is the core ingredient to the mentioned skill. Hence this sentence is more literal than Sarah always swims against the current.

Comparing metaphoric and metonymic structures, it is expected that metaphoric idioms be perceived as more NON-LITERAL in this sense than metonymic idioms. Non-literalness here is very similar to ‘figurativeness’, as metaphor and metonymy are generally described as kinds of figurative language. A plethora of linguistic expressions can be imagined as being positioned on a continuum of literalness with a literal and a figurative extreme, instead of within a clear-cut dichotomy of literal language on the one hand and figurative language on the other (for the difficulty of a clear distinction between literal and figurative, see also Gibbs & Colston, Reference Gibbs and Colston2012, Chapter 2). ‘Figurative’ already implies a fairly high degree of ‘not literal’, and would not encompass language lower on the non-literalness scale, such as any rather (but not completely) literal expressions. Metonymies (money changes hands) can in fact be close to the literal pole and resemble strictly literal language (She washes her hands with soap) more than very figurative language (They are hand in glove with each other). The term ‘non-literalness’ seems more fitting than ‘figurativeness’ to capture the nature of many metonymic idioms especially.

1.2. psycholinguistic characteristics of idioms

Many studies suggest that the processing advantage of idioms is driven by a number of properties, especially those related to semantic and cognitive processing (see also Nunberg, Sag, & Wasow, Reference Nunberg, Sag and Wasow1994). We chose five properties as key to the semantic and cognitive processing of idioms. While we may expect non-literalness to be influential, familiarity, transparency (which we see as having the two aspects of comprehensibility and relation), and length are known to impact processing difficulty in idioms and other fixed expressions. In our study, metonymic and metaphoric idioms are rated on these properties, except for length, which is recorded in number of words.

1.2.1. Familiarity

Whether an idiom is familiar to a hearer strongly impacts processing ease (see Cronk & Schweigert, Reference Cronk and Schweigert1992; Gibbs, Reference Gibbs1980; Libben & Titone, Reference Libben and Titone2008; Nippold & Taylor, Reference Nippold and Taylor1995, Reference Nippold and Taylor2002; Schweigert, Reference Schweigert1986; Tabossi, Fanari, & Wolf, Reference Tabossi, Fanari and Wolf2009; Titone & Connine, Reference Titone and Connine1994). Familiarity refers to how well known an idiom is to readers, which is driven by how frequently they encounter it. Processing models such as the Superlemma Hypothesis (Sprenger et al., Reference Sprenger, Levelt and Kempen2006) or the Graded Salience Hypothesis (Giora, Reference Giora1997, Reference Giora2003) also assume familiarity to be one of the key properties determining processing difficulty. For example, highly conventional or familiar metaphors are processed as fast as literal sentences (Iakimova, Passerieux, Laurent, & Hardy-Bayle, Reference Iakimova, Passerieux, Laurent and Hardy-Bayle2005). Conventional or familiar metaphors also have a processing advantage compared to less conventional and familiar ones (Blasko & Connine, Reference Blasko and Connine1993), and to novel ones (Bowdle & Gentner, Reference Bowdle and Gentner2005; Coulson & Van Petten, Reference Coulson and Van Petten2002; Lai & Curran, Reference Lai and Curran2013). They also score higher in ratings on meaningfulness (Gildea & Glucksberg, Reference Gildea and Glucksberg1983; Glucksberg, Newsome, & Goldvarg, Reference Glucksberg, Newsome and Goldvarg2001) and coherence (Giora, Fein, Kotler, & Shuval, Reference Giora, Fein, Kotler, Shuval, Brône, Feyaerts and Veale2015). As Citron, Cacciari, Kucharski, Beck, Conrad, and Jacobs (Reference Citron, Cacciari, Kucharski, Beck, Conrad and Jacobs2016) point out, familiarity is a more adequate and reliable measure for idioms than frequency counts. It indicates how frequently an individual has been exposed to a particular idiom and is thus primarily a subjective and direct measure.

1.2.2. Transparency

‘Transparency’ is a broad term and has not been defined consistently in idiom research. Some contend transparency to be very closely related or identical to decomposability (Abel, Reference Abel2003; Gibbs, Nayak, & Cutting, Reference Gibbs, Nayak and Cutting1989; Gross, Reference Gross1996; Zwitserlood, Reference Zwitserlood1994), i.e., the degree to which an idiom’s figurative meaning can be ascertained from its component words (Libben & Titone, Reference Libben and Titone2008; Nordmann & Jambazova, Reference Nordmann and Jambazova2016). Others clearly demonstrate how idioms can be both non-decomposable and transparent (Nunberg et al., Reference Nunberg, Sag and Wasow1994) or show how transparency and decomposability correlate in ratings, but are different properties (Carrol, Littlemore, & Gillon-Dowens, Reference Carrol, Littlemore and Gillon-Dowens2018). On a second account, transparency is the ease with which an idiom can be comprehended (Boers & Demecheleer, Reference Boers and Demecheleer2001). It has also been shown that transparency is connected to the motivation of an idiomatic meaning. Motivation is often grounded in physical or other concrete experiences of language users. If a metaphor or metonymy in an idiom is recognized and combined with world knowledge, then an idiom can become relatively transparent (Boers & Webb, Reference Boers, Webb, Heredia and Cieślicka2015). A third common account defines transparency as the relatedness between the literal and the non-literal meaning of an idiom (Cacciari & Glucksberg, Reference Cacciari and Glucksberg1995; Nippold & Taylor, Reference Nippold and Taylor1995, Reference Nippold and Taylor2002; Titone & Connine, Reference Titone and Connine1999). Most of these authors have shown that transparency affects processing ease (for example, as found partly in adults and especially in children and adolescents by Cain, Towse, & Knight, Reference Cain, Towse and Knight2009; Nippold & Duthie, Reference Nippold and Duthie2003; Nippold & Rudzinsky, Reference Nippold and Rudzinski1993; Nippold & Taylor, Reference Nippold and Taylor2002). These transparency accounts may overlap yet address slightly different aspects of idioms.

1.2.2.1. Comprehensibility.

We refer to the first aspect as ‘comprehensibility’. This is best captured by the following definition as “the ease with which the meaning of an idiomatic unit can be recovered” (Nunberg et al., Reference Nunberg, Sag and Wasow1994, p. 498; Boers & Demecheleer, Reference Boers and Demecheleer2001) while the motivation “needn’t be etymologically correct” (Nunberg et al., Reference Nunberg, Sag and Wasow1994, p. 498). It is equivalent to “comprehensibility” as in Katz, Paivio, Marschark, and Clark (Reference Katz, Paivio, Marschark and Clark1988) and to “meaningfulness” as in Titone and Connine (Reference Titone and Connine1994). An idiom is transparent “if [a reader or listener] feels that there is a motivated relationship between the expression and its meaning” (Keysar & Bly, Reference Keysar and Bly1999, p. 1562). Individual cognition and experience differs, thus individuals tend to make sense of idioms in individual ways. Thus an individual may find an idiom quite easily comprehensible even though they might deem the relation between its literal and idiomatic meaning distant, which addresses a slightly different aspect of transparency.

1.2.2.2. Relation.

The second aspect of transparency is the relatedness between the literal and the non-literal meaning of an idiom (Cacciari & Glucksberg, Reference Cacciari and Glucksberg1995; Nippold & Taylor, Reference Nippold and Taylor2002; Titone & Connine, Reference Titone and Connine1999). This notion defines the strength of the semantic or conceptual link between the literal and the idiomatic meaning of an idiom, which in our survey is referred to as ‘relation’. Literally, to give the word would thus be closely related to its meaning ‘to inform or notify somebody’, because word is immanently related to speaking and writing. In contrast, the literal to wrap somebody around one’s finger is very distantly or not at all related to its meaning of ‘purposefully seduce somebody’ as there is no obvious semantic link between the parts of the literal and the non-literal meaning.

Relation encourages a rather analytical perspective where each idiom is compared to its meaning and in terms of how close that relationship is. Judgment is thus based on a comparison of the idiomatic meaning with its literal meaning. High comprehensibility does not necessarily dictate a close relation, although a relationship between these two properties seems likely. Comprehensibility and relation thus capture the nature of transparency from two angles. Participants as young as ten years old are easily capable of rating relationships between idioms and meanings on a 3-step scale (Nippold & Taylor, Reference Nippold and Taylor2002).

1.2.3. Non-literalness

Non-literalness is the key property researched here and is defined as the degree to which an idiom is non-literal. At the time of the design and execution of this study, it had not been considered as such in norming or processing studies of idioms. When ‘literality’ is a criterion in processing or rating studies, it is either defined as “how often an idiom phrase is used literally” (Cronk & Schweigert, Reference Cronk and Schweigert1992, p. 134), as literal plausibility (Bonin, Méot, & Bugaiska, Reference Bonin, Méot and Bugaiska2013; Nordmann & Jambazova, Reference Nordmann and Jambazova2016; Titone, Holzman, & Levy, Reference Titone, Holzman and Levy2002), or as an idiom’s potential literal interpretation (Libben & Titone, Reference Libben and Titone2008; Titone & Connine, Reference Titone and Connine1994), which all deviate from our definition. Katz et al.’s (Reference Katz, Paivio, Marschark and Clark1988) metaphor rating study is the only one to our knowledge that uses the term ‘metaphoricity’ equivalently to ‘non-literalness’ as used here, and thus defined as the degree to which sentences are “literally or figuratively true” (Katz et al., Reference Katz, Paivio, Marschark and Clark1988).

Citron et al. (Reference Citron, Cacciari, Kucharski, Beck, Conrad and Jacobs2016) were the first to introduce ‘Metaphorizität’ (translated in English as ‘figurativeness’) in a German idiom norming study. This term carries the assumption, however, that all idioms not strictly literal are metaphoric. Since we subdivide idioms according to metonymic versus metaphoric structure, this term is inapplicable to our study. Moreover, non-literalness is not necessarily metaphoric: not only can it be metonymic, it can also be ironic, litotical (i.e., understated), hyperbolical, etc. For this reason, ‘Metaphorizität’ is too narrow to be synonymous to non-literalness and it is possible that ratings of metaphoricity would differ from those of non-literalness. The term ‘non-literalness’ also has a practical advantage over ‘figurativeness’ for this study: ‘literal/non-literal’ are commonly used and well-known concepts in everyday language and life; speakers have clear intuitions about (non-)literally used language. From a young age on, children are necessarily exposed to it as non-literalness permeates every sphere of language and everyday communication, and can be a topic of natural conversation itself. Accordingly, non-literalness (or rather its opposite ‘literalness’) has a second-nature status to speakers which sets it far apart from relation. ‘Figurativeness’, on the other hand, is a substantially less intuitive, natural, and well-known concept. As this study attempts to gather speakers’ most natural and intuitive judgments, ‘non-literalness’ seems to be the more adequate choice.

Similar reasons apply to the demarcation between relation and non-literalness. They are related properties, and correlation is expected, but several differences make a division useful: once more, similarly to figurativeness, the relation between two meanings is a rather unfamiliar concept to a layperson and uncommon in life outside the language sciences. Second, relation focuses on a comparison. The strength of the link between two meanings requires considering both equally and analyzing their connection, while non-literalness focuses on the idiom itself.

1.2.4. Idiom length

Length is usually a highly effective predictor in reading (as in Bonin et al., Reference Bonin, Méot and Bugaiska2013; Just, Carpenter, & Woolley, Reference Just, Carpenter and Woolley1982; Michl, unpublished observations) and in lexical decision (Ferrand et al., Reference Ferrand, New, Brysbaert, Keuleers, Bonin, Méot and Pallier2010). It is unclear whether it affects the perception of idiom properties, while so far the only property it correlates with in idioms seems to be predictability (Bonin et al., Reference Bonin, Méot and Bugaiska2013; Tabossi, Arduino, & Fanari, Reference Tabossi, Arduino and Fanari2011).

2. Method

There were several aims of this study. One was to collect idiom norms to be matched for use in semantic and cognitive processing studies. Another was to test whether processing differences in metonymies and metaphors are also mirrored in the perception of idioms. A third aim was to examine the relationships between these properties, as several other idiom rating studies have done so far partly for other properties. In particular, it was assumed that familiarity ratings could influence ratings of the other properties, thus positively correlating with other properties, as has in fact been found for literality and decomposability (Nordmann, Cleland, & Bull, Reference Nordmann, Cleland and Bull2014), and transparency (Carrol et al., Reference Carrol, Littlemore and Gillon-Dowens2018). For these reasons, a large rating study was conducted in the form of four separate surveys, each containing instructions with examples to rate metonymic and metaphoric idioms on only one of four properties: familiarity, comprehensibility, relation, and non-literalness.

At the time of planning and executing this study, no database with speaker ratings for German idioms existed. Today this is still the only idiom study that focuses directly on non-literalness, which has not been a criterion in idiom norming studies before, as defined here, even though it is apparently seen as a key property of idioms, judging from idiom definitions. An additional, new feature of this database is the subdivision of idioms into metaphoric and metonymic idioms, thus a division by conceptual structure. It aims to shed light on the properties of metonymies and metaphors as perceived by native speakers with various backgrounds and to provide grounds for comparing the processing of metonymic and metaphoric idioms.

Finally, the present study is also more extensive than prior norming studies: it provides more ratings on each property than many other idiom studies (61–96 each on at least 122 idioms and 320 in the familiarity survey, as it contains 76 extra literal idioms outside the scope of this paper) and 397 participants with a wide range of age, educational and professional backgrounds, as compared to the other idiom rating studies.Footnote 1

2.1. material

We selected all idioms from a modern German idiom dictionary (Schemann, Reference Schemann2011). The preliminary and explorative database comprised 1,800 idioms having a number of properties. An idiom was selected if it could be classified as metonymic or metaphoric, and if the metonymy or metaphor lay within the noun and not the verb alone. Furthermore, we selected idioms that consisted of 2 to 7 words (84% consisted of 3–5 words), had the syntactic structure VP+NP, VP+PP, or, rarely, VP+NP+PP, and that could be embedded in an indicative sentence and then end in a noun. This excludes stand-alone exclamations, proverbs, and other full sentences. We additionally excluded all idioms that were ironic, strongly hyperbolical, or strongly litotical, i.e., understated, very rare, old-fashioned, or very modern, dialectal, or regional, or very vulgar in nature. Idioms containing expletives, abusive, or onomatopoetic words, brand names and other neologisms were also excluded. Last, we excluded idioms if they required any specific background knowledge to be understood, if they were used only in specific jargons, or could only be made sense of in context or through knowledge of speaker-inherent intentions. We thus attempted to keep the selected idioms not specifically tied to a particular register, language style, or manner, comprehensible on their own, and familiar to the average adult German native speaker. Last, we excluded many idioms that used the same words, to avoid presenting participants with too many highly similar idioms (for example, 12 idioms containing the word ‘eye’). This left 244 idioms, consisting of 87 metonymic and 157 metaphoric idioms. Please see Table 1 for examples.

table 1. Examples for the idiom types

Excluding neologisms, metonymic idioms mostly have a meronymic structure, specifically our idioms usually follow the PART FOR WHOLE paradigm (as opposed to the meronymic structure WHOLE FOR PART and the antonomasic structures PRODUCER FOR PRODUCT or BRAND NAME FOR GENERIC). Examples are to pay something out of one’s own pocket (pocket for ‘belongings’), have an evil tongue (evil tongue for inclination to speak ill’). The classification into metonymic and metaphoric was done by the author and 17 independent raters, half of whom work in language-related fields. The 17 raters received working definitions of metonymy and metaphor referred to as idiom type ‘A’ or ‘B’, and classified their shares of idioms into either category ‘A’ or category ‘B’. Every idiom received 5 classifications by 5 different people, namely the author plus 4 different raters. The classification was deemed successful if at least 80% of the classifications agreed on the type of idiom. Average agreement between each individual rater and the author was 86%. The amount of idioms reaching 80% classification agreement was 84% (89% in metonymic idioms, 80% in metaphoric idioms) while 57% of idioms reached 100% agreement (67% in metonymic, 48% in metaphoric idioms). In the surveys, participants were unaware of idiom type.

2.2. procedure

Each of the four surveys contained one variable to be rated from familiarity, comprehensibility, relation, or non-literalness. They were conducted separately to simplify the task and to avoid any bias in later ratings stemming from earlier ratings of another property. Moreover, letting participants rate all properties in one session not only increases each individual’s impact on the results, but also cannot control whether they properly switch from rating one property to rating the next. Finally, explaining several unfamiliar properties after one another might make the task rather strenuous and confusing, which would decrease data quality. For these reasons, we used a between-subjects design, while the main goal was to recruit as many participants as feasible.Footnote 2

The four surveys were released consecutively over a four-month period, with gaps of several weeks before and after each survey. We recruited participants via various channels, including e-mail, notices, and pamphlets. In each survey, the material was divided into two lists to decrease the load. Participants were randomly assigned to one list of each survey. Upon completion of that list, they could choose to continue with their second list or quit. Thus, completion of each questionnaire took 20 to 40 minutes, and each participant rated either 122 or 244 idioms on one variable, the number depending on their own choice. We designed and presented the surveys as questionnaires on the non-commercial social studies online platform Sosci Survey, Version 2.5.00-I (Leiner, Reference Leiner2014). The idioms were presented in individually randomized order on several consecutive web pages.

In each survey, participants had a five-point Likert scale. In all surveys except the familiarity survey, meanings of the 244 metonymic and metaphoric idioms were presented alongside the idioms to ensure that participants based their answers on the correct meanings, as they can have incorrect knowledge of a meaning, but be confident about it (see also Citron et al., Reference Citron, Cacciari, Kucharski, Beck, Conrad and Jacobs2016). In the familiarity survey, meanings were not given, to avoid biasing participants. They were asked to consider how often they encountered an idiom. They could answer on a five-point Likert scale reaching from encountering the idiom ‘hardly ever’ to ‘very frequently’, or instead choose the answer ‘never encountered it before’. In the comprehensibility survey, participants rated how easily comprehensible they found each idiom on a scale from ‘extremely difficult to understand’ to ‘extremely easy to understand’. In the relation survey, participants rated how closely related each literal meaning was to its idiomatic meaning on a scale from ‘extremely distantly or not at all related’ to ‘extremely closely related’. In the non-literalness survey, participants rated how literal each idiom was in comparison to its given meaning on a scale from ‘extremely literal’ to ‘not at all literal’. Besides addressing different features of idioms, the relation study asked for an analytical perspective on an unfamiliar property, whereas the non-literalness study allowed for a more intuitive answer on a familiar property.

2.3. participants

410 early German monolingual participants participated in the study. They received either course credit or could partake in a raffle for €20 vouchers for online stores. 397 (39% male) were included in the analyses (96 for familiarity; 86 for comprehensibility; 111 for relation; 104 for non-literalness). Two participants were excluded as they were only 10 and 13 years old; the rest was excluded due to ‘fast-clicking’, i.e., clicking through the questionnaires in 8 minutes and under, or almost consistently choosing the same rating response (SD < 0.6 scale steps). The remaining participants were 18 to 94 years of age; 50% were 25 to 54 years old (M = 38.5, SD = 16.1). 47% were up to 30, 86% were up to 60 years old.

Participants were asked for their origin or their place of residence, depending on what they defined as their home. They came from every federal state of Germany, except for the Saarland. 39% came from Southern Germany, the most densely populated area; 38% came from the North Eastern federal states (the former DDR).

Of the 397 participants, 47% gave as their highest educational degree a university or college degree, 28% held a 12- or 13-year high school diploma, 18% held a secondary school 10-year diploma, a vocational baccalaureate diploma, or a completed apprenticeship, 6% held a PhD or higher, 2% were still in school, held a 9-year high school diploma (the lowest in Germany), or provided no answer.

2.4. analysis

We conducted most analyses with R Version 3.3.2 (R Core Team, 2016) and RStudio Version 1.0.136 (RStudio Team 2016) and the descriptive statistics with Microsoft Excel (Version 14.0.7229.5000; Microsoft Corporation, 2010). Means and standard deviations were obtained for all properties and each idiom. Length was calculated in number of words. Kendall’s tau-b correlation tests were conducted to examine the relationship between the four different properties, using the R package ‘Kendall’ 2.2 (McLeod, Reference McLeod2015). This correlation test was chosen as it is rank-based on median ratings and works well with ties which can be common with medians.

Since the first key aim was to examine whether the properties could predict idiom type (of which participants were unaware), we performed a binomial logistic regression to predict metonymic or metaphoric idioms from ratings.

Mixed effect regressions were used to test participant effects on their ratings (Baayen, Davidson, & Bates, Reference Baayen, Davidson and Bates2008; Field, Miles, & Field, Reference Field, Miles and Field2014) because they allow accounting for inter-individual variances between participants as well as items within a single model. In this case, ordered cumulative logit models were fitted with the R package ‘ordinal’ 2018.8-25 (Christensen, Reference Christensen2015, 2018). Multicollinearity was tested using the R package ‘fmsb’ 0.6.3 (Nakazawa, 2018). Scripts, supplementary material, and concise idiom norms are available.Footnote 3

3. Results

3.1. descriptive statistics

Familiarity, comprehensibility, relation, and non-literalness all had average ratings of 3.1 to 3.8 for all idioms. The answer ‘never encountered the idiom before’ was chosen in less than 1% of cases, which were excluded from the analysis. Please see Table 2 for an overview of means and standard deviations. In terms of familiarity, the metonymic idioms (M = 3.5, SD = 0.18) had the same average ratings as the metaphoric idioms (M = 3.5, SD = 0.21). The comprehensibility ratings were higher for metonymic (M = 4.1, SD = 0.22) than metaphoric (M = 3.6, SD = 0.21) idioms. The relation ratings were distinctly higher for metonymic (M = 3.8, SD = 0.18) than metaphoric (M = 2.8, SD = 0.13) idioms. The non-literalness ratings showed an even larger difference, with metonymic idioms (M = 2.5, SD = 0.17) being rated as much less non-literal than metaphoric idioms (M = 4.0, SD = 0.19). For a quick overview, Table 3 lists t-tests comparing mean values of the properties in metaphoric versus metonymic idioms. It can be seen that metonymic and metaphoric idioms do not differ in familiarity (p = .53), while they differ significantly with respect to comprehensibility, relation, and non-literalness.

table 2. Descriptive statistics for each rated or calculated variablea

notes: a Based on mean values for each idiom. The higher the rating, the more familiar, the more comprehensible, the closer the relation, the more non-literal.

table 3. Welch two sample t-tests on mean ratings of metaphoric and metonymic idioms

3.2. relationships among properties

To keep the family-wise error rate low, we set the significance level for the correlation analysis to α = 0.001. First, familiarity was compared to all other properties. Familiarity and comprehensibility showed a significant correlation (τ b = 0.35, p < .001). This connection with comprehensibility may express the phenomenon that more familiar phrases are likely more easily comprehensible. (Participants themselves were asked to gauge how strongly their familiarity with idioms influenced their ratings of other properties. Please see the ‘Appendix’ for a discussion.)

Other correlations with comprehensibility were stronger, as values for comprehensibility and relation (τ b = 0.63, p < .001), and comprehensibility and non-literalness (τ b = –-0.53, p < .001) indicated. The correlation of comprehensibility and relation showed that the more easily comprehensible an idiom was rated, the more closely related it was to its meaning. The moderate negative correlation between comprehensibility and non-literalness revealed that the more easily comprehensible an idiom, the more literal (the less non-literal) it tended to be.

The strongest correlation was obtained for relation and non-literalness (τ b = –0.77, p < .001), which indicated that the more distant the relationship between idiom and meaning is, the more likely it was perceived as highly non-literal. No significant or practically meaningful correlations were found between number of words (length) and the other properties. For a numeric and visual overview of correlations, please see Table 4 and Figure 1.

table 4. Correlations of properties

Fig. 1. Correlations are based on medians (ratings 1, 2, 3, 4, and 5). To make the individual items visible and avoid overplotting, the datapoints are jittered.

3.3. predicting idiom type

One key question was which of the properties could best predict idiom type. To answer this question, a binomial logistic regression was conducted with idiom type as dependent variable and familiarity, comprehensibility, relation, and non-literalness as numeric independent variables, based on medians.Footnote 4 Idiom length, as recorded by number of words, was additionally used as an independent variable to make sure that the material was balanced according to idiom type. In testing for multicollinearity between these properties, all variance inflation factors were below 4.31, indicating no strong multicollinearity.

Regression outputs can be found in Table 5. No effect was found for idiom length, which shows that the two kinds of idioms were balanced in terms of length. Thus length was excluded from further analysis. Familiarity, comprehensibility, and relation did not turn out to be significant predictors (p > .05). Non-literalness was the strongest predictor for metaphoric versus metonymic idioms, as indicated by its large effect size (b = 2.25) which was significant (p < .001). Indeed, metonymic idioms were often rated as highly literal and rarely as very non-literal, whereas the opposite was found for metaphoric idioms: a one-unit increase in non-literalness, i.e., an idiom being one unit ‘more non-literal’, means that this idiom is nine times more likely to be a metaphoric than a metonymic idiom. McFadden R2 indicated 55% of variance to be covered by familiarity, comprehensibility, relation, and non-literalness. Please see Figure 2 for effect sizes.

table 5. Results from the top binomial logistic regression models 95% CI for odds ratio

notes: Dependent variable: idiom type, reference level = metonymy; effect size indicates how much higher ratings are on average, comparing metaphoric to metonymic idioms.

Fig. 2. Effect sizes of the four rated properties in the regression predicting idiom type.

3.3.1. Predictive value

The predictive value of the effects was tested, based on the full model. We tested whether idioms were correctly predicted to be metonymic or metaphoric. This was done by calculating a percentage of probability to which an idiom would be either metonymic or metaphoric. If the percentage was over 50% for the correct type, prediction was considered correct. Correctness was high: 85% of metonymic idioms were correctly predicted to be metonymic, while 87% of metaphoric idioms were correctly predicted to be metaphoric.

3.3.2. Non-literalness versus relation

Two results suggest that relation would likely be a strong predictor of idiom type on its own if non-literalness was excluded: one, the rather strong correlation between non-literalness and relation; two, the absence of an effect of relation in predicting idiom type when non-literalness was held constant. Thus, idiom type was once fit with only familiarity, comprehensibility, and relation, and compared to a model with familiarity, comprehensibility, and non-literalness. As shown in Table 5b, relation then became a significant predictor (p < .001): if the relation rating decreased by one unit (i.e., if the relationship between idiom and meaning was rated as one unit more distant), this idiom was nine times more likely to be metaphoric than metonymical. Thus the relation effect was almost as strong as the non-literalness effect in the full and reduced model (Table 5). However, the relation model had much lower fit than the non-literalness model (as indicated by Akaike information criterion (AIC), Bayes information criterion (BIC), and residual deviance which all showed a difference of 58.4, which is large for these criteria). Last, McFadden R2 showed that the model without non-literalness (but with familiarity, comprehensibility, and relation) together covered 36% variance, whereas the model without relation (but with familiarity, comprehensibility, and non-literalness) together reached a value of 55% (see Table 5c). Given these large differences, we conclude that non-literalness and relation are not interchangeable: relation is a considerably weaker and less exact predictor for idiom type than non-literalness.

3.4. individual differences

For each survey, ratings were fitted as a function of sex, education, and origin as categorical fixed effects, age as a numeric fixed effect, and random intercepts for participants and items. Models were fitted with all levels of each factor, as well as with collapsed levels of each factor, looking for large-scale effects of education (low, medium, and high), residential background (such as North, South, East, or West of the country, as well as effects of a North–South or East–West divide). No effects could be found. As age and education may correlate to a certain extent, an interaction term was compared to the individual effects in likelihood ratio tests for all four properties. No effects were found and the interaction term actually decreased model fits in three out of four surveys. With regards to the familiarity ratings, this indicates that the idioms presented were equally known across age and the country.

4. General discussion

This idiom rating study asked adult German native speakers to rate familiarity, comprehensibility, relation, and non-literalness. We analyzed correlations between properties, property effects on predicting idiom type, non-literalness ratings, and participant effects on ratings.

Our most interesting finding is that non-literalness is the only strong and reliable predictor in predicting idiom type. Our results clearly suggest that the degree of non-literalness predicts whether an idiom is metonymic or metaphoric. Metonymic idioms were rated as more literal than metaphoric idioms. Our findings indicate that degree of non-literalness, and type of non-literalness (metonymic or metaphoric), as well as relation are closely connected: an extremely non-literal idiom with very close relation to its meaning, or vice versa, is unlikely. Our data also suggest that we are rather unlikely to find an extremely non-literal metonymic idiom or an extremely literal metaphoric idiom, a metonymic idiom very distantly related to its meaning or a metaphoric idiom extremely closely related to its meaning.

As discussed earlier, metonymies are easier and faster to process than metaphors. The rating study at hand indicates that the reason may be the higher literalness. This would make non-literalness an influential factor on processing difficulty. Non-literalness is connected to the other properties to varying degrees. Our result suggests that familiarity is roughly equally typical in rather literal and non-literal idioms. This result is not directly comparable to Katz et al. (Reference Katz, Paivio, Marschark and Clark1988), who found a somewhat strong correlation between metaphoricity and ‘felt familiarity’ (0.74) for literary metaphors: first, results are likely different for metaphors occurring in poetry and fiction compared to idioms which are highly lexicalized, fixed expressions largely present in everyday language. Second, felt familiarity measured the frequency with which ‘ideas’ in the sentences were ‘experienced’ (Katz, et al., Reference Katz, Paivio, Marschark and Clark1988, p. 197), which is not a measure of how frequently a specific metaphor in its precise wording is encountered, as it was instructed in our study. In addition, the metaphors by Katz et al. had the form X IS A Y, which is not at all a common form in idioms and did not occur in our materials.

While non-literalness correlates only moderately with comprehensibility, its negative correlation with relation is strong. Hence the more non-literal an idiom, the more distant is its relation to its meaning, and vice versa. This is unsurprising, as transparency seems to be connected to the motivation of idiomatic meanings. Following Boers and Webb (Reference Boers, Webb, Heredia and Cieślicka2015), motivating an idiomatic meaning “involves an appreciation of the correspondence between a literal reading of the expression and the idiomatic, figurative meaning (…) If the literal reading is congruent with the idiomatic meaning (…), then the scene evoked by the literal reading can render the expression semantically transparent” (p. 370).

Citron et al. (Reference Citron, Cacciari, Kucharski, Beck, Conrad and Jacobs2016) also found figurativeness and semantic transparency to be negatively correlated. Their finding is not strictly identical to ours for two reasons: one, Citron et al. allowed participants to rate more than one variable in one long session, which might produce different results; second, in contrast to the definition adopted here, they define transparency as decomposability, namely the degree to which an idiom’s meaning can be constructed from its parts. However, to the best of our knowledge, theirs is the only study that examines transparency in connection to figurativeness.

Nippold and Duthie (Reference Nippold and Duthie2003) examined transparency, defined here as relation, and its link to mental imagery in idioms. They found a significant difference in adults, who tended to produce more figurative mental images for transparent idioms and more literal ones for opaque idioms. While this does not directly relate to non-literalness, it shows a difference between transparent and opaque idioms with regard to their figurative interpretations. Other rating studies that examined ‘literality’ define it as literal plausibility (Bonin et al., Reference Bonin, Méot and Bugaiska2013; Nordmann & Jambazova, Reference Nordmann and Jambazova2016; Tabossi et al., Reference Tabossi, Arduino and Fanari2011; Titone et al., Reference Titone, Holzman and Levy2002). The meta-analysis by Nordmann and Jambazova (Reference Nordmann and Jambazova2016) demonstrated that there are no clear correlations between literality and other rated properties, which suggests that literality and non-literalness are distinct properties functioning according to distinct principles.

Non-literalness is connected to both comprehensibility and relation. Our findings indicate that metonymic idioms are more likely to be based on a close relationship between idiom and meaning, whereas the relationship between metaphoric idiom and meaning tends to be more distant. Relation, however, had no predictive value for idiom type as long as non-literalness was controlled for. Without non-literalness, relation was found to be a significant predictor with similar effect size for whether an idiom was metonymic or metaphoric, yet was significantly weaker and less exact than non-literalness.

Comprehensibility is moderately correlated with relation, indicating that the more easily comprehensible an idiom, the more likely it is rather closely related to its meaning. The obvious implication is that a clear connection between idiom parts and their idiomatic meaning renders idioms more straightforward to native speakers (compare the examples translated from German: to come with empty hands and ‘to come without a gift or contribution’ versus to make steam at somebody and ‘to impel somebody’). The restriction to this finding is that we cannot examine whether these two properties are thus linked in a single rater. Yet there seems to be some tacit agreement across raters that high comprehensibility is moderately linked to close relation. This has also been concluded by Cacciari and Levorato (Reference Cacciari and Levorato1998), Nippold and Duthie (Reference Nippold and Duthie2003), Nippold and Rudzinski (Reference Nippold and Rudzinski1993), and Nippold and Taylor (Reference Nippold and Taylor1995), who inferred that transparent idioms are generally easier to understand than opaque idioms. It seems that a clear connection between idiom parts and meaning, perceived as a close relation, tends to make idioms easily comprehensible. It should be borne in mind that the great majority of idioms in our study were rated as rather easily comprehensible, although there was a weak tendency to rate metaphoric idioms as more difficult.

As for a familiarity effect, our findings are partly in line with those of other studies. Nordmann and Jambazova (Reference Nordmann and Jambazova2016), for example, concluded from their own experiments that “the only thing that has any tangible effect on ratings is familiarity” (p. 205), which we did not find as such. Our participants’ own judgments of how their familiarity influenced their ratings of the other variables are mixed, but do not support a strong influence of familiarity (see ‘Appendix’). Nordmann and Jambazova’s meta-analysis of other idiom rating studies also found few strong correlations of familiarity with other subjective properties in both within- and between-subject designs. Our study cannot examine directly whether participants’ familiarity ratings influence their ratings of other properties, but our findings support an absence of correlations between familiarity and two other properties in idioms: a familiar idiom is not necessarily also highly literal, or closely related to its meaning. Comprehensibility is the only property with a moderate correlation with familiarity, as is also found to varying degrees in other idiom rating studies (Nippold & Taylor, Reference Nippold and Taylor2002; Nordmann & Jambazova, Reference Nordmann and Jambazova2016; for transparency, Carrol et al., Reference Carrol, Littlemore and Gillon-Dowens2018). This suggests that the more familiar an expression, the more often it has been encountered, thus the more easily comprehensible it may seem (see also Keysar & Bly, Reference Keysar and Bly1999). However, in our data, this is a tendency, not an absolute finding, and it might be present because a large number of idioms were found to be familiar. On the other hand, several idiom rating studies that have found a strong connection between familiarity and transparency also tested non-native speakers who were not familiar with all idioms. It is quite possible that L2 effects of familiarity on rating other properties are much stronger than L1 effects, especially because the degrees of familiarity differ much more strongly between L1 and L2 speakers than within L1 speakers alone.

For familiarity ratings, age has often been found to be a significant predictor in adolescents of different ages versus adults (for example, Chan & Marinellie, Reference Chan and Marinellie2008), which is unsurprising. Nordmann and Jambazova (Reference Nordmann and Jambazova2016), however, found age in adults to be a marginally significant predictor in rating familiarity, meaning that older adults are more likely to rate idioms as familiar than younger adults. While this finding may seem plausible at first, we did not find such an effect, despite our large age range and our very similarly constructed material and analysis. The reason may be that older participants may have encountered all presented idioms more frequently during their lives and there may be fewer idioms unfamiliar to them. Still, it is very likely that they have encountered rare idioms much less frequently than highly frequent ones. That is, the absolute number of encountering all idioms may be much higher than for younger participants, but the relative differences remain similar. Our scale gave no absolute terms or numbers but asked for relative, not absolute comparisons; thus participants had to judge for themselves what ‘extremely’ or ‘fairly familiar’ meant to them.

Two other reasons for the diverging findings are possible. One: Nordmann and Jambazova (Reference Nordmann and Jambazova2016) used a 7-point Likert scale whereas our 5-point Likert scale might not have been sensitive enough to detect an age effect, although it has been shown that 5- and 7-point Likert scales render very similar or equivalent results and can easily translate into one another (Colman, Norris, & Preston, Reference Colman, Norris and Preston1997; Dawes, Reference Dawes2008). Two: an age effect might be absent in this study because we randomized the order of idioms for every participant, whereas Nordmann and Jambazova (Reference Nordmann and Jambazova2016) did not. So it is theoretically possible that older participants somehow responded differently to the specific order of idioms, although the authors argue that order effects are very unlikely.

Raters were not influenced in their judgments by how long an idiom was, demonstrated by the absence of significant correlations between length and all other properties. This is in slight contrast to Citron et al. (Reference Citron, Cacciari, Kucharski, Beck, Conrad and Jacobs2016), who found a very weak, yet significant correlation between length and figurativeness. While their correlation coefficient is slightly larger than ours (0.13 versus 0.03), such small values should have no practical value.

Overall, the absence of demographic effects suggests that native speakers’ judgment of all properties tested is not driven by their age, gender, home, or education, nor by the length of the idiom. Their judgments rather seem to be driven individually, as by a feeling for language, or other cognitive properties.

5. Conclusion

This idiom rating study examined the factor of non-literalness. First, it structured non-literalness in idioms by dividing them into metonymic and metaphoric. Second, it examined the influence of the degree of non-literalness and found it to be the one crucial factor in predicting whether an idiom tends to be metonymic or metaphoric. Third, it found that non-literalness is connected to different aspects of transparency. Our novel key finding is that metaphoric idioms are perceived as more non-literal then metonymic idioms.

Supplementary Material

To view supplementary material for this article, please visit https://osf.io/uryfa/?view_only=ca27dfb5ff654ac9bc17523c2ccd8f1f.

Appendix

Effect of familiarity on other ratings by self-report

Our study also had participants self-report how strongly they felt their comprehensibility, relation, and non-literalness ratings were influenced by how familiar the idiom was to them. The findings somewhat mirror the absence or weakness of correlations between familiarity and the other properties. In the comprehensibility survey, only 31% feel their rating was very strongly or strongly influenced by how familiar the idiom was to them, 17% report some influence, while 52% report no or very weak influence.

In rating the relation between idiom and meaning, 26% of participants felt (very) strongly influenced by how familiar the idiom was to them, 28% report some, while 46% report no or very weak influence.

In rating non-literalness, 36% of participants felt (very) strongly influenced by how familiar the idiom was to them, 30% report some, while 34% report no or very weak influence.

It is unclear how difficult it is to block influence by familiarity, whether it occurs subconsciously, and whether its effect can be adequately gauged by participants themselves. These three surveys contained the help instruction to not let familiarity influence the ratings. So, on the one hand, participants likely tried their best to follow and could then gauge the influence on a scale of 1 to 5 (‘none’ to ‘very strong influence’). Usage of the full scale in all surveys at least indicates large individual differences in how successful blocking the influence worked, or at least how participants perceived it. As the comparably large shares of ratings on the low end (‘no/very weak influence’) of the scale shows, it seemed possible for over one-third to over one-half of participants to largely block influence by familiarity. Although no rewards or sanctions were tied to succeeding in this respect, answers in favor of the instruction cannot be ruled out.

Footnotes

*

I thank all participants and test participants, everyone who helped distributing invitations to the surveys, and the reviewers of the paper.

1 Five existing idiom rating studies are summarized in terms of quantity: Bonin et al. (Reference Bonin, Méot and Bugaiska2013): 27 ratings on 305 idioms, 187 participants in total; Nordmann and Jambazova (Reference Nordmann and Jambazova2016): 30 or more ratings per property on 90–100 idioms, 150 and 196 participants, respective of study; Titone and Connine (Reference Titone and Connine1994): 28–30 ratings from 171 to a final 40 idioms; Citron et al. (Reference Citron, Cacciari, Kucharski, Beck, Conrad and Jacobs2016): at least 30 ratings on 619 idioms, 249 participants in total; Tabossi et al. (Reference Tabossi, Arduino and Fanari2011): 40–43 ratings per property on 245 idioms, 740 participants in total, all from school or university.

2 As very many participants were needed and it was not always possible to trace whether a particular participant had followed a particular invitation; some participants received two invitations to surveys. These were spaced several weeks up to three months apart to minimize any possible effects on rating behavior from completing their first survey. Furthermore, participants had to report partaking in another survey. Participants were usually not invited to partake in two consecutive surveys, and participation in both transparency surveys was not possible. In the end, 46 out of 397 participants completed two surveys. A comparison of a between- versus a within-subjects study showed no difference in property correlations of ratings (Nordmann & Jambazova, Reference Nordmann and Jambazova2016).

3 Files are available either at https://osf.io/uryfa/?view_only=ca27dfb5ff654ac9bc17523c2ccd8f1f> or upon request to the author.

4 In modelling ordinal data, the median is recommended as the more appropriate measure than the mean, because scalar intervals may not be evenly spaced and interpreted by raters in different ways, and because the median is not affected by outliers and skewness (Allen & Seaman, Reference Allen and Seaman2007; Lund & Lund, Reference Lund and Lund2013), although preferences of median versus mean differ (for example, Sauro, Reference Sauro2016).

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Figure 0

table 1. Examples for the idiom types

Figure 1

table 2. Descriptive statistics for each rated or calculated variablea

Figure 2

table 3. Welch two sample t-tests on mean ratings of metaphoric and metonymic idioms

Figure 3

table 4. Correlations of properties

Figure 4

Fig. 1. Correlations are based on medians (ratings 1, 2, 3, 4, and 5). To make the individual items visible and avoid overplotting, the datapoints are jittered.

Figure 5

table 5. Results from the top binomial logistic regression models 95% CI for odds ratio

Figure 6

Fig. 2. Effect sizes of the four rated properties in the regression predicting idiom type.