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PLOS ONE  2013 

Chimpanzees (Pan troglodytes) Flexibly Adjust Their Behaviour in Order to Maximize Payoffs, Not to Conform to Majorities

DOI: 10.1371/journal.pone.0080945

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Abstract:

Chimpanzees have been shown to be adept learners, both individually and socially. Yet, sometimes their conservative nature seems to hamper the flexible adoption of superior alternatives, even to the extent that they persist in using entirely ineffective strategies. In this study, we investigated chimpanzees’ behavioural flexibility in two different conditions under which social animals have been predicted to abandon personal preferences and adopt alternative strategies: i) under influence of majority demonstrations (i.e. conformity), and ii) in the presence of superior reward contingencies (i.e. maximizing payoffs). Unlike previous nonhuman primate studies, this study disentangled the concept of conformity from the tendency to maintain one’s first-learned strategy. Studying captive (n=16) and semi-wild (n=12) chimpanzees in two complementary exchange paradigms, we found that chimpanzees did not abandon their behaviour in order to match the majority, but instead remained faithful to their first-learned strategy (Study 1a and 1b). However, the chimpanzees’ fidelity to their first-learned strategy was overridden by an experimental upgrade of the profitability of the alternative strategy (Study 2). We interpret our observations in terms of chimpanzees’ relative weighing of behavioural options as a function of situation-specific trade-offs. More specifically, contrary to previous findings, chimpanzees in our study abandoned their familiar behaviour to maximize payoffs, but not to conform to a majority.

References

[1]  Kendal RL, Coolen I, Laland KN (2009) Adaptive trade-offs in the use of social and personal information. In: Dukas R. Cognitive ecology II. Chicago: University of Chicago Press. pp. 249-271.
[2]  Macarthur RH, Pianka ER (1966) On Optimal Use of a Patchy Environment. Am Nat 100: 603-609. doi:10.1086/282454.
[3]  Mcfarland DJ (1977) Decision-Making in Animals. Nature 269: 15-21. doi:10.1038/269015a0.
[4]  King AJ, Cowlishaw G (2007) When to use social information: the advantage of large group size in individual decision making. Biol Lett 3: 137-139. doi:10.1098/Rsbl.2007.0017. PubMed: 17284400.
[5]  Boyd R, Richerson P (1985) Culture and the Evolutionary Process. Chicago: University of Chicago Press.
[6]  Henrich J, Boyd R (1998) The evolution of conformist transmission and the emergence of between-group differences. Evol Hum Behav 19: 215-241. doi:10.1016/S1090-5138(98)00018-X.
[7]  Hanus D, Call J (2011) Chimpanzee problem-solving: contrasting the use of causal and arbitrary cues. Anim Cogn 14: 871-878. doi:10.1007/S10071-011-0421-6. PubMed: 21647648.
[8]  Schrauf C, Call J, Fuwa K, Hirata S (2012) Do Chimpanzees Use Weight to Select Hammer Tools? PLOS ONE 7: e41044. doi:10.1371/journal.pone.0041044_ARTN. PubMed: 22815905 e41044.
[9]  V?lter CJ, Call J (2012) Problem solving in great apes (Pan paniscus, Pan troglodytes, Gorilla gorilla, and Pongo abelii): the effect of visual feedback. Anim Cogn 15: 923-936. doi:10.1007/s10071-012-0519-5. PubMed: 22644115.
[10]  Bonnie KE, Horner V, Whiten A, de Waal FBM (2007) Spread of arbitrary conventions among chimpanzees: a controlled experiment. Proc R Soc Lond B-Biol Sci 274: 367-372. doi:10.1098/Rspb.2006.3733. PubMed: 17164200.
[11]  Lonsdorf EV, Eberly LE, Pusey AE (2004) Sex differences in learning in chimpanzees. Nature 428: 715-716. doi:10.1038/428715a. PubMed: 15085121.
[12]  Whiten A, Spiteri A, Horner V, Bonnie KE, Lambeth SP et al. (2007) Transmission of multiple traditions within and between chimpanzee groups. Curr Biol 17: 1038-1043. doi:10.1016/J.Cub.2007.05.031. PubMed: 17555968.
[13]  Luncz LV, Mundry R, Boesch C (2012) Evidence for Cultural Differences between Neighboring Chimpanzee Communities. Curr Biol 22: 922-926. doi:10.1016/J.Cub.2012.03.031. PubMed: 22578420.
[14]  van Leeuwen EJC, Cronin KAC, Haun DBM, Mundry R, Bodamer MD (2012) Neighbouring chimpanzee communities show different preferences in social grooming behaviour. Proc R Soc Lond B-Biol Sci 279: 4362-4367. doi:10.1098/rspb.2012.1543. PubMed: 22933372.
[15]  Whiten A, Goodall J, McGrew WC, Nishida T, Reynolds V et al. (1999) Cultures in chimpanzees. Nature 399: 682-685. doi:10.1038/21415. PubMed: 10385119.
[16]  Hopper LM, Schapiro SJ, Lambeth SP, Brosnan SF (2011) Chimpanzees' socially maintained food preferences indicate both conservatism and conformity. Anim Behav 81: 1195-1202. doi:10.1016/j.anbehav.2011.03.002.
[17]  Whiten A, Horner V, de Waal FBM (2005) Conformity to cultural norms of tool use in chimpanzees. Nature 437: 737-740. doi:10.1038/nature04047. PubMed: 16113685.
[18]  Claidière N, Whiten A (2012) Integrating the Study of Conformity and Culture in Humans and Nonhuman Animals. Psychol Bull 138: 126-145. doi:10.1037/A0025868. PubMed: 22061691.
[19]  Pesendorfer MB, Gunhold T, Schiel N, Souto A, Huber L et al. (2009) The Maintenance of Traditions in Marmosets: Individual Habit, Not Social Conformity? A Field Experiment. PLOS ONE 4. doi:10.1371/journal.pone.0004472.
[20]  van Leeuwen EJC, Haun DBM (2013) Conformity in primates: fad or fact? Evol Hum Behav 34: 1-7. doi:10.1016/j.evolhumbehav.2012.07.005.
[21]  Haun DBM, van Leeuwen EJC, Edelson MG (2013) Majority influence in children and other animals. Developmental. J Cogn Neurosci 3: 61-71. doi:10.1016/j.dcn.2012.09.003.
[22]  Bonnie KE, Milstein MS, Calcutt SE, Ross SR, Wagner KE et al. (2012) Flexibility and Persistence of Chimpanzee (Pan Troglodytes) Foraging Behavior in a Captive Environment. Am J Primatol 74: 661-668. doi:10.1002/Ajp.22020. PubMed: 22644579.
[23]  Hanus D, Mendes N, Tennie C, Call J (2011) Comparing the Performances of Apes (Gorilla gorilla, Pan troglodytes, Pongo pygmaeus) and Human Children (Homo sapiens) in the Floating Peanut Task. PLOS ONE 6: e19555. doi:10.1371/journal.pone.0019555_ARTN. PubMed: 21687710 e19555.
[24]  Hrubesch C, Preuschoft S, van Schaik C (2009) Skill mastery inhibits adoption of observed alternative solutions among chimpanzees (Pan troglodytes). Anim Cogn 12: 209-216. doi:10.1007/s10071-008-0183-y. PubMed: 18766391.
[25]  Marshall-Pescini S, Whiten A (2008) Chimpanzees (Pan troglodytes) and the question of cumulative culture: an experimental approach. Anim Cogn 11: 449-456. doi:10.1007/s10071-007-0135-y. PubMed: 18204869.
[26]  Asch SE (1956) Studies of Independence and Conformity .1. A Minority of One against a Unanimous Majority. Psychol Monogr 70: 1-70. doi:10.1037/h0093713.
[27]  Weatherall D, Bell J, Blakemore C, Ludlow L, Walport M (2006) The use of non-human primates in research.
[28]  Ron T, Mcgrew B (1988) Ecological assessment for a chimpanzee rehabilitation project in Northern Zambia. Primates Conserv 9: 37-41.
[29]  Dean LG, Kendal RL, Schapiro SJ, Thierry B, Laland KN (2012) Identification of the Social and Cognitive Processes Underlying Human Cumulative Culture. Science 335: 1114-1118. doi:10.1126/Science.1213969. PubMed: 22383851.
[30]  Yamamoto S, Humle T, Tanaka M (2013) Basis for cumulative cultural evolution in chimpanzees: social learning of a more efficient tool-use technique. PLOS ONE 8: e55768. PubMed: 23383278e55768.
[31]  Deutsch M, Gerard HB (1955) A study of normative and informational social influences upon individual judgment. J Abnorm Soc Psychol 51: 629-636. doi:10.1037/h0046408.
[32]  Haun DBM, Rekers Y, Tomasello M (2012) Majority-biased transmission in chimpanzees and human children, but not orangutans. Curr Biol 22: 727-731. doi:10.1016/j.cub.2012.03.006. PubMed: 22503497.
[33]  Laland KN (2004) Social learning strategies. Learn Behav 32: 4-14. doi:10.3758/BF03196002. PubMed: 15161136.
[34]  Schlag KH (1998) Why imitate, and if so, how? A boundedly rational approach to multi-armed bandits. J Econ Theory 78: 130-156. doi:10.1006/jeth.1997.2347.
[35]  Mesoudi A (2011) Cultural Evolution: how Darwinian theory can explain human culture & synthesize the social sciences. London: University of Chicago Press.
[36]  Price EE, Lambeth SP, Schapiro SJ, Whiten A (2009) A potent effect of observational learning on chimpanzee tool construction. Proc R Soc Lond B-Biol Sci 276: 3377-3383. doi:10.1098/rspb.2009.0640.

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