Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-19T05:07:38.206Z Has data issue: false hasContentIssue false

‘Mindreading’ Mammals? Attribution of Belief Tasks With Dolphins

Published online by Cambridge University Press:  11 January 2023

A J-P C Tschudin*
Affiliation:
Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, UK
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

‘Mindreading’ or theory of mind (ToM) refers to the capacity to attribute mental states to others. This ability is regarded as a critical component of what has, to date, exclusively characterized the advanced social cognition displayed by humans. The false belief task is a key test for ToM in different animal species. On a standard non-verbal false belief task, humans pass from age 4, whereas non-human primates consistently fail. Neuroanatomical and behavioural evidence for dolphins, however, indicates that they are capable of passing ToM tasks. The current paper represents a synthesis of the relevant dolphin research on neocortical evolution and non-invasive behavioural tests of precursors for ToM and the attribution of beliefs. The success of dolphins on attribution of belief tasks, in the absence of learning or cueing, indicates that they are capable of ‘mindreading’. What are the implications of animal ‘mindreading’? ToM tasks probe for reflexive consciousness and, by this criterion, dolphins may display reflexive consciousness. The implication of this conclusion is that future behavioural studies of social cognition will have considerable ethical and legal implications for animal welfare.

Type
Research Article
Copyright
© 2001 Universities Federation for Animal Welfare

References

Baars, B J 1988 A Cognitive Theory of Consciousness. Cambridge University Press: New York, USAGoogle Scholar
Baron-Cohen, S, Leslie, A M and Frith, U 1985 Does the autistic child have a ‘theory of mind’? Cognition 21: 3746CrossRefGoogle ScholarPubMed
Byrne, R W 1995 The Thinking Ape. Oxford University Press: New York, USAGoogle Scholar
Byrne, R W and Whiten, A (eds) 1988 Machiavellian Intelligence: Social Expertise and the Evolution of Intellect in Monkeys, Apes and Humans. Clarendon Press: Oxford, UKGoogle Scholar
Byrne, R W and Whiten, A 1990 Tactical deception in primates: the 1990 database. Primate Report 27: 1101Google Scholar
Call, J and Tomasello, M 1999 A non-verbal false belief task: the performance of children and great apes. Child Development 70: 381395CrossRefGoogle Scholar
Cheney, D L and Seyfarth, R M 1990 How Monkeys See the World. University of Chicago Press: Chicago, USACrossRefGoogle Scholar
Connor, R C, Smolker, R A and Richards, A F 1992 Dolphin alliances and coalitions. In: Harcourt, A H and de Waal, F B M (eds) Coalitions and Alliances in Humans and Other Animals pp 415443. Oxford University Press: New York, USAGoogle Scholar
Connor, R C, Heithaus, M R and Barre, L M 1999 Superalliances of bottlenose dolphins. Nature 397: 571572CrossRefGoogle Scholar
Darwin, C 1859 On the Origin of Species by Means of Natural Selection. John Murray: London, UKGoogle Scholar
Davies, M and Humphreys, G W (eds) 1993 Consciousness. Blackwell: Oxford, UKGoogle Scholar
Dawkins, M S 1993 Through Our Eyes Only? The Search for Animal Consciousness. Spektrum Freeman: Oxford, UKGoogle Scholar
Dennett, D C 1978 Brainstorms: Philosophical Essays on Mind and Psychology. MIT Press: Cambridge, USAGoogle Scholar
Dunbar, RIM 1992 Neocortex size as a constraint on group size in primates. Journal of Human Evolution 20: 469493CrossRefGoogle Scholar
Dunbar, RIM 1993 Coevolution of neocortical size, group size and language in humans. Behavioral and Brain Sciences 16: 681735CrossRefGoogle Scholar
Dunbar, RIM 1995 Neocortex size and group size in primates: a test of the hypothesis. Journal of Human Evolution 28: 287296CrossRefGoogle Scholar
Dunbar, RIM and Bever, J 1998 Neocortex size determines group size in insectivores and carnivores. Ethology 104: 695708CrossRefGoogle Scholar
Harcourt, A H 1992 Coalitions and alliances: are primates more complex than non-primates? In: Harcourt A H and de Waal F B M (eds) Coalitions and Alliances in Humans and Other Animals pp 445471. Oxford University Press: New York, USAGoogle Scholar
Herman, L M 1986 Cognition and language competencies of bottlenosed dolphins. In: Schusterman R J, Thomas J A and Woods F G (eds). Dolphin Cognition and Behavior: a Comparative Approach pp 221252. Lawrence Erlbaum Associates: Hillsdale, USAGoogle Scholar
Herman, L M, Pack, A A and Wood, A M 1994 Bottlenose dolphins can generalize rules and develop abstract concepts. Marine Mammal Science 10: 7080CrossRefGoogle Scholar
Herman, L M, Abichandani, S L, Elhajj, A N, Herman, E U K and Sanchez, J L 1999 Dolphins (Tursiops truncatus) comprehend the referential character of the human pointing gesture. Journal of Comparative Psychology 111: 347364CrossRefGoogle Scholar
Heyes, C 1993 Anecdotes, training, trapping and triangulation: do animals attribute mental states? Animal Behaviour 46: 177188CrossRefGoogle Scholar
Humphrey, N K 1976 The social function of intellect. In: Bateson, PPG and Hinde, R A (eds) Growing Points in Ethology pp 303317. Cambridge University Press: Cambridge, UKGoogle Scholar
Leslie, A M 1987 Pretence and representation: the origins of ‘Theory of Mind’. Psychological Review 94: 412426CrossRefGoogle Scholar
Marcel, A J 1994 Phenomenal experience and functionalism. In: Marcel, A J and Bisiach, E (eds) Consciousness in Contemporary Science pp 121158. Clarendon Press: Oxford, UKGoogle Scholar
Marino, L 1996 What can dolphins tell us about primate evolution? Evolutionary Anthropology 5: 81853.0.CO;2-Z>CrossRefGoogle Scholar
Marten, K and Psarakos, S 1995 Using self-view television to distinguish between self-examination and social behavior in the bottlenose dolphin (Tursiops truncatus). Consciousness and Cognition 4: 205225Google ScholarPubMed
Morrel-Samuels, P and Herman, L M 1993 Cognitive factors affecting comprehension of gesture language signs: a brief comparison of dolphins and humans. In: Roitblat, H R, Herman, L M and Nachtigall, P (eds) Language and Communication: Comparative Perspectives pp 211222. Lawrence Erlbaum Associates: Hillsdale, USAGoogle Scholar
Mundy, P and Sigman, M 1989 Specifying the nature of the social impairment in autism. In: Dawson, G (ed) Autism: Nature, Diagnosis and Treatment pp 321. The Guilford Press: New York, USAGoogle Scholar
Mundy, P, Sigman, M and Kasari, C 1994 The theory of mind and joint attention deficits in autism. In: Baron-Cohen, S, Tager-Flusberg, H and Cohen, D J (eds) Understanding Other Minds: Perspectives from Autism pp 181203. Oxford University Press: New York, USAGoogle Scholar
Neisser, U 1988 Five kinds of self-knowledge. Philosophical Psychology 1: 3559CrossRefGoogle Scholar
Neisser, U 1993 The Perceived Self. Cambridge University Press: New York, USAGoogle Scholar
O'Connell, S 1995 Theory of Mind in Chimpanzees. PhD Thesis. University of Liverpool, UKGoogle Scholar
O'Neill, D 1996 Two-year old children's sensitivity to a parent's knowledge state when making requests. Child Development 67: 659677CrossRefGoogle Scholar
Pack, A A and Herman, L M 1995 Sensory integration in the bottlenosed dolphin: immediate recognition of complex shapes across the senses of echolocation and vision. Journal of the Acoustical Society of America 98: 722733CrossRefGoogle ScholarPubMed
Povinelli, D J 1993 Reconstructing the evolution of mind. American Psychologist 48: 493509CrossRefGoogle ScholarPubMed
Povinelli, D J 1994 Comparative studies of animal mental state attribution: a reply to Heyes. Animal Behaviour 48: 239241CrossRefGoogle Scholar
Povinelli, D J and Eddy, T J 1996 Chimpanzees: joint visual attention. Psychological Science 7: 129135CrossRefGoogle Scholar
Povinelli, D J, Nelson, K E and Boysen, S T 1990 Inferences about guessing and knowing by chimpanzees. Journal of Comparative Psychology 104: 203210CrossRefGoogle ScholarPubMed
Povinelli, D J, Nelson, K E and Boysen, S T 1992a Comprehension of social-role reversal in chimpanzees: evidence of empathy? Animal Behaviour 43: 633640CrossRefGoogle Scholar
Povinelli, D J, Parks, K A and Novak, M A 1992b Role reversal by rhesus monkeys, but no evidence of empathy. Animal Behaviour 43: 269281CrossRefGoogle Scholar
Povinelli, D J, Reaux, J E, Bierschwale, D T, Allain, A D and Simon, B B 1997 Exploitation of pointing as a referential gesture in young children, but not adolescent chimpanzees. Cognitive Development 12: 423461CrossRefGoogle Scholar
Premack, D 1988 ‘Does the chimpanzee have a theory of mind?’ revisited. In: Byrne, R W and Whiten, A (eds) Machiavellian Intelligence: Social Expertise and the Evolution of Intellect in Monkeys, Apes and Humans pp 160179. Clarendon Press: Oxford, UKGoogle Scholar
Premack, D and Woodruff, G 1978 Does the chimpanzee have a theory of mind? Behavioural and Brain Sciences 1: 515526CrossRefGoogle Scholar
Rosenthal, D M 1993 Thinking that one thinks. In: Davies, M and Humphreys, G W (eds) Consciousness pp 197223. Blackwell: Oxford, UKGoogle Scholar
Sawaguchi, T and Kudo, H 1990 Neocortical development and social structure in primates. Primates 31: 283290CrossRefGoogle Scholar
Tager-Flusberg, H 1989 A psycholinguistic perspective on language development in the autistic child. In: Dawson, G (ed) Autism: Nature, Diagnosis and Treatment pp 92115. The Guilford Press: New York, USAGoogle Scholar
Tomasello, M and Call, J 1997 Primate Cognition. Oxford University Press: New York, USAGoogle Scholar
Tomasello, M, Call, J and Gluckman, A 1997 Comprehension of novel communicative signs by apes and human children. Child Development 68: 10671080CrossRefGoogle ScholarPubMed
Tschudin, A 1999 Relative Neocortex Size and its Correlates in Dolphins: Comparisons with Humans and Implications for Mental Evolution. PhD Thesis, University of Natal, South AfricaGoogle Scholar
Tschudin, A, Daji, K, Henzi, S P, Peddemors, V and Royston, D 1996 Relative brain size and social structure in dolphins. In: Integrating Zoology: subdisciplines and the subcontinent p 152. University of Pretoria Press: Pretoria, South AfricaGoogle Scholar
Tschudin, A, Basson, C and Peddemors, V 1999 Can comparative analysis and ecological psychology tell us anything about the evolution of mind and consciousness? In: Taddei-Ferretti C and Musio C (eds) Neuronal Bases and Psychological Aspects of Consciousness pp 9299. World Scientific Publishing Company: SingaporeCrossRefGoogle Scholar
Tschudin, A, Call, J, Dunbar, RIM, Harris, G and van der Eist, C Comprehension of signs by dolphins (Tursiops truncatus). Journal of Comparative Psychology 115: (in press)Google Scholar
Tye, M 1995 Ten Problems of Consciousness. MIT Press: Cambridge, USACrossRefGoogle Scholar
Vygotsky, L S 1978 Mind in Society. Harvard University Press: Cambridge, USAGoogle Scholar
Wellman, H M and Bartsch, K 1994 Before belief: children's early psychological theory. In: Lewis, C and Mitchell, P (eds) Children's Early Understanding of Mind pp 331352. Lawrence Erlbaum Associates: Hove, UKGoogle Scholar
Wimmer, H and Perner, J 1983 Beliefs about beliefs: representation and constraining function of wrong beliefs in young children's understanding of deception. Cognition 13: 103128CrossRefGoogle ScholarPubMed
Xitco, M J Jr and Roitblat, H L 1996 Object recognition through eavesdropping: passive echolocation in bottlenose dolphins. Animal Learning and Behavior 24: 355365CrossRefGoogle Scholar