This article uses a behavioral genetics approach to study gender differences in expressed political interest, applying the enriched environment hypothesis to gendered political socialization. As girls are less stimulated to develop an interest in politics than boys, we theorize that these differences in the socialization environment reduce the expression of girls’ genetic predispositions compared to boys’, leading to a gender gap in the heritability of this trait. Analyses using data on German twins (11–25 years) demonstrate relevant differences by gender and age in heritability estimates. While differences in political interest between boys are largely explained by genes, this is less the case for girls, as they have considerably higher shared environment estimates. Our results imply that gender differences in expressed political interest are sustained by both genetic variation and environmental influences (such as socialization), as well as the interaction between the two.

Data systematically depict women as less knowledgeable, interested, and apt to provide a valid answer to questions about politics. These three gaps – the knowledge, the political interest, and the expression of knowledge gap – are related to a discriminatory way of measuring political knowledge and interest, which conceptually juxtaposes the more general concept of knowledge and interest in politics to that of knowing about, or taking an interest in, political institutions. This narrows the measurement to topics that men are more interested in. In this experimental study, the focus is shifted from political institutions to a wider understanding of what can be a political issue. It reveals that women's knowledge disadvantage and hesitancy in answering to knowledge questions, together with men's higher levels of interest, are most likely conditional to this traditional interpretation of the term politics.

Political parties and civic organizations disseminate information to improve citizen decision making in local elections. Do citizens choose to consume such information and, if so, how does it affect their decisions? We conduct a survey experiment during a real-world local election that randomly assigns 1) political party endorsements, 2) a voter guide, 3) no information, or 4) a choice among these options. Respondents assigned to receive party endorsements and a voter guide are more likely than respondents receiving no information to choose candidates who share their policy views. When given a choice, a majority opts to receive information (including many with low levels of political interest), with most respondents preferring a voter guide. Using an instrumental variable approach, we show that the effect of information on those who choose to receive it is substantial. These results offer hope that voter education efforts can succeed despite widespread political disinterest.

An interested and engaged electorate is widely believed to be an indicator of democratic health. As such, the aggregate level of political interest of an electorate – macrointerest – is an essential commodity in a democracy, and understanding the forces that change macrointerest is important for diagnosing the health of a democracy. Because being interested in politics requires time and effort, the article theorizes that the electorate's level of political interest will be highest when the electorate believes the government cannot be trusted or is performing poorly. To test hypotheses derived from a proposed theory against rival explanations, the study develops a measure of macrointerest using a quarterly time series of aggregated survey items (1973–2014) of political interest. The authors find support for the theory that the electorate responds as reasonable agents when determining how closely to monitor elected officials: interest is positively related to decreases in trust in government.

Democracies without democrats are not sustainable. Yet, recent studies have argued that Western citizens are turning their backs on the system of self-governance, thereby eroding the societal foundations of consolidated democracies. This study contributes to discussions about citizen support of democracy by (1) analyzing new cross-national survey data in 18 European countries that facilitate assessments of the temporal and geographical generalizability of previous findings, (2) disentangling age, cohort and period effects, thereby aligning the analytical methods with the theoretical arguments and (3) transparently reporting all evidence derived from pre-registered analyses to avoid cherry-picked findings. The findings show that citizens of consolidated democracies continue to endorse self-governance. Yet in some (but not all) countries, there is evidence of a growing number of ‘democrats in name only’, particularly among the young generation. These findings suggest a second phase in research on democratic fatigue that broadens the analytical scope for the multi-faceted nature of democratic support.

In order to explain differences in political interest, two strands of literature point to the relevance of either dispositional or situational factors. I remedy this and show how political interest is shaped by the interplay between personality differences and the political environment. Specifically, I demonstrate that people with a stable motivation for engaging with new ideas are more interested in politics when exposed to new political events, e.g. during election campaigns and when unexpected events unfold. The results have implications for our understanding of political inequalities in democratic engagement and shed light on how citizens' interest in politics can be relatively stable over time as well as responsive to the political environment in predictable ways.

While youth suffrage is widely debated, the causal effects of being eligible to vote on adolescents' political attitudes are less well known. To gain insights into this question, we leverage data from a real-life quasi-experiment of voting at 16 in the city of Ghent (Belgium). We compare the attitudes of adolescents that were entitled to vote with their peers that just fell below the age cut-off. We also examine the effects of the enfranchisement at 18-years-old. While we find an effect of youth enfranchisement on attention to politics, there is no evidence for an effect of enfranchisement on political engagement overall.

How should education be structured to most effectively increase civic outcomes such as political knowledge and democratic values? We present results from a field experiment in which we compare the effects of deliberative education and traditional teacher-centered education. The study is the largest field experiment on deliberative education to date and involved more than 1,200 students in 59 classrooms. We test the effects on four forms of civic competence: political knowledge, political interest, democratic values, and political discussion. In contrast to previous research, we find little evidence that deliberative education significantly increases civic competence.

Previous research has established significant positive associations between social trust and wellbeing among older adults. This study aimed to obtain a deeper understanding of the relationship between different sources of social trust and wellbeing by examining the mediational role of political interest. A sample of 4,406 Italian residents aged 65 years and over was extracted from a national cross-sectional survey during 2013 in Italy, representative of the non-institutionalised population. Measures included trust in people, trust in institutions, political interest, life satisfaction and self-perceived health. Mediation path analysis and structural equation modelling were used to test the mediation effects of political interest on the relationship between trust in people and trust in institutions with life satisfaction and self-perceived health. Associations between trust in people, life satisfaction and self-perceived health, and between trust in institutions and life satisfaction were partially mediated by political interest, while the association between trust in institutions and self-perceived health was fully mediated by political interest. Having high levels of political interest may thus enhance the relationship between social trust and wellbeing among older adults. These results suggest that interventions to enhance wellbeing in older adults may benefit from examining individuals’ levels of political interest.

Interest in politics is important for a host of political behaviors and beliefs. Yet little is known about where political interest comes from. Most studies exploring the source of political interest focus on parental influences, economic status, and opportunity. Here, we investigate an alternative source: genetic transmission. Using two twin samples, one drawn from Denmark and the other from USA, we find that there is a high degree of heritability in political interest. Furthermore, we show that interest in politics and political efficacy share the same underlying, latent genetic factor. These findings add to the growing body of literature that documents political behaviors and attitudes as not simply the result of socialization, but also as part of an individual's genetically informed disposition.