Social Justice Research

, Volume 25, Issue 2, pp 140–169 | Cite as

To Each According to his Need? Variability in the Responses to Inequity in Non-Human Primates

Article

Abstract

While it is well established that humans respond to inequity, it remains unclear the extent to which this behavior occurs in our non-human primate relatives. By comparing a variety of species, spanning from New World and Old World monkeys to great apes, scientists can begin to answer questions about how the response to inequity evolved, what the function of this response is, and why and how different contexts shape it. In particular, research across non-human primate species suggests that the response is quite variable across species, contexts, and individuals. In this paper, we aim to review these differences in an attempt to identify and better understand the patterns that emerge from the existing data with the goal of developing directions for future research. To begin, we address the importance of considering socio-ecological factors in non-human primates in order to better understand and predict expected patterns of cooperation and aversion to inequity in different species, following which we provide a detailed analysis of the patterns uncovered by these comparisons. Ultimately, we use this synthesis to propose new ideas for research to better understand this response and, hence, the evolution of our own responses to inequity.

Keywords

Inequity response Fairness Inequity aversion Non-human primates Species comparison 

References

  1. Abeyesinghe, S., Nicol, C., Hartnell, S., & Wathes, C. (2005). Can domestic fowl, Gallus gallus domesticus, show self-control? Animal Behaviour, 70(1), 1–11.Google Scholar
  2. Addessi, E., Crescimbene, L., & Visalberghi, E. (2007). Do capuchin monkeys (Cebus apella) use tokens as symbols? Proceedings of the Royal Society B, 274(1625), 2579.PubMedGoogle Scholar
  3. Addessi, E., & Rossi, S. (2011). Tokens improve capuchin performance in the reverse–reward contingency task. Proceedings of the Royal Society B, 278(1707), 849–854.PubMedGoogle Scholar
  4. Bard, K. A. (1992). Intentional behavior and intentional communication in young free-ranging Orangutans. Child Development, 63(5), 1186–1197.PubMedGoogle Scholar
  5. Bekoff, M. (2004). Wild justice, cooperation, and fair play: Minding manners, being nice, and feeling good. In R. Sussman & A. Chapman (Eds.), The Origins and Nature of Sociality (pp. 53–79). Chicago: Aldine.Google Scholar
  6. Beran, M. J., & Evans, T. A. (2006). Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): The effects of delayed reward visibility, experimenter presence, and extended delay intervals. Behavioural Processes, 73, 315–324.PubMedGoogle Scholar
  7. Boesch, C. (1994). Cooperative hunting in wild chimpanzees. Animal Behaviour, 48(3), 653–667.Google Scholar
  8. Boesch, C., & Boesch-Achermann, H. (2000). The Chimpanzees of the Tai Forest: Behavioural ecology and evolution. Oxford: Oxford University Press.Google Scholar
  9. Boinski, S. (1987). Birth synchrony in squirrel monkeys (Saimiri oerstedi). Behavioral Ecology and Sociobiology, 21(6), 393–400.Google Scholar
  10. Boinski, S. (1988). Use of a club by a wild white-faced capuchin (Cebus capucinus) to attack a venomous snake (Bothrops asper). American Journal of Primatology, 14(2), 177–179.Google Scholar
  11. Boinski, S. (1999). The social organizations of squirrel monkeys: Implications for ecological models of social evolution. Evolutionary Anthropology: Issues, News, and Reviews, 8(3), 101–112.Google Scholar
  12. Bräuer, J., Call, J., & Tomasello, M. (2006). Are apes really inequity averse? Proceedings of the Royal Society B, 273(1605), 3123.PubMedGoogle Scholar
  13. Bräuer, J., Call, J., & Tomasello, M. (2009). Are apes inequity averse? New data on the token-exchange paradigm. American Journal of Primatology, 71(2), 175–181.PubMedGoogle Scholar
  14. Bräuer, J., & Hanus, D. (2012). Social Justice Research (forthcoming).Google Scholar
  15. Brosnan, S. F. (2006). Nonhuman species’ reactions to inequity and their implications for fairness. Social Justice Research, 19(2), 153–185.Google Scholar
  16. Brosnan, S. F. (2010). What do capuchin monkeys tell us about cooperation? In D. R. Forsyth & C. L. Hoyt (Eds.), For the greater good of all: Perspectives on individualism, society, and leadership (Vol. Jepson studies in leadership series) (pp. 11–28). Hampshire: Palgrave Macmillan Publishers.Google Scholar
  17. Brosnan, S. F. (2011). A hypothesis of the co-evolution of cooperation and responses to inequity. Frontiers in Neuroscience, 5, 43.PubMedGoogle Scholar
  18. Brosnan, S. F. (2012). Introduction to justice in animals. Social Justice Research, 25. doi:10.1007/s11211-012-0156-9.
  19. Brosnan, S. F., & de Waal, F. B. M. (2003). Monkeys reject unequal pay. Nature, 425(6955), 297–299.PubMedGoogle Scholar
  20. Brosnan, S. F., & de Waal, F. (2004a). Socially learned preferences for differentially rewarded tokens in the brown capuchin monkey (Cebus apella). Journal of Comparative Psychology, 118(2), 133.PubMedGoogle Scholar
  21. Brosnan, S. F., & de Waal, F. B. M. (2004b). A concept of value during experimental exchange in brown capuchin monkeys, Cebus apella. Folia Primatologica, 75, 317–330.Google Scholar
  22. Brosnan, S. F., & de Waal, F. B. M. (2012). Social Justice Research (forthcoming).Google Scholar
  23. Brosnan, S. F., Flemming, T., Talbot, C. F., Mayo, L., & Stoinski, T. (2011). Orangutans (Pongo pygmaeus) do not form expectations based on their partner’s outcomes. Folia Primatologica, 82(1), 56–70.Google Scholar
  24. Brosnan, S. F., Freeman, C., & de Waal, F. B. M. (2006). Partner’s behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys. American Journal of Primatology, 68(7), 713–724.PubMedGoogle Scholar
  25. Brosnan, S. F., Houser, D., Leimgruber, K., Xiao, E., Chen, T., & de Waal, F. B. M. (2010). Competing demands of prosociality and equity in monkeys. Evolution and Human Behavior, 31(4), 279–288.Google Scholar
  26. Brosnan, S. F., Parrish, A., Beran, M. J., Flemming, T., Heimbauer, L., Talbot, C. F., et al. (2011). Responses to the assurance game in monkeys, apes, and humans using equivalent procedures. Proceedings of the National Academy of Sciences of the United States of America, 108(8), 3442.PubMedGoogle Scholar
  27. Brosnan, S. F., Schiff, H., & de Waal, F. B. M. (2005). Tolerance for inequity may increase with social closeness in chimpanzees. Proceedings of the Royal Society B, 272(1560), 253.PubMedGoogle Scholar
  28. Brosnan, S. F., Talbot, C., Ahlgren, M., Lambeth, S. P., & Schapiro, S. J. (2010). Mechanisms underlying responses to inequitable outcomes in chimpanzees, Pan troglodytes. Animal Behaviour, 79(6), 1229–1237.Google Scholar
  29. Brosnan, S. F., Wilson, B., & Beran, M. J. (2012). Old World monkeys are more similar to humans than New World monkeys when playing a coordination game. Proceedings of the Royal Society B, 279, 1522–1530.PubMedGoogle Scholar
  30. Brown, G. R., Almond, R. E. A., & Bates, N. J. (2005). Adult–infant food transfer in common marmosets: An experimental study. American Journal of Primatology, 65(4), 301–312.PubMedGoogle Scholar
  31. Brown, G. R., Almond, R. E. A., & Bergen, Y. (2004). Begging, stealing, and offering: Food transfer in nonhuman primates. Advances in the Study of Behavior, 34, 265–295.Google Scholar
  32. Burkart, J. M., Fehr, E., Efferson, C., & Van Schaik, C. P. (2007). Other-regarding preferences in a non-human primate: Common marmosets provision food altruistically. Proceedings of the National Academy of Sciences of the United States of America, 104(50), 19762.PubMedGoogle Scholar
  33. Burkart, J. M., Hrdy, S., & Van Schaik, C. (2009). Cooperative breeding and human cognitive evolution. Evolutionary Anthropology: Issues, News, and Reviews, 18(5), 175–186.Google Scholar
  34. Byrne, R. W., & Bates, L. A. (2010). Primate social cognition: Uniquely primate, uniquely social, or just unique? Neuron, 65(6), 815–830.PubMedGoogle Scholar
  35. Campbell, C. J., Fuentes, A., MacKinnon, K. C., Bearder, S. K., & Stumpf, R. M. (2010). Primates in perspective (2nd ed.). New York: Oxford University Press.Google Scholar
  36. Chalmeau, R., Lardeux, K., Brandibas, P., & Gallo, A. (1997). Cooperative problem solving by orangutans (Pongo pygmaeus). International Journal of Primatology, 18(1), 23–32.Google Scholar
  37. Chen, J., & Houser, D. (2012). Social Justice Research (forthcoming).Google Scholar
  38. Chen, M. K., & Santos, L. R. (2006). Some thoughts on the adaptive function of inequity aversion: An alternative to Brosnan’s social hypothesis. Social Justice Research, 19(2), 201–207.Google Scholar
  39. Christen, M., & Glock, H. (2012). Social Justice Research (forthcoming).Google Scholar
  40. Cowlishaw, G., & Dunbar, R. I. M. D. (2000). Primate conservation biology. Chicago: University of Chicago Press.Google Scholar
  41. Cronin, K. A., Kurian, A. V., & Snowdon, C. T. (2005). Cooperative problem solving in a cooperatively breeding primate (Saguinus oedipus). Animal Behaviour, 69(1), 133–142.PubMedGoogle Scholar
  42. Cronin, K. A., Schroeder, K. K. E., Rothwell, E. S., Silk, J. B., & Snowdon, C. T. (2009). Cooperatively breeding cottontop tamarins (Saguinus oedipus) do not donate rewards to their long-term mates. Journal of Comparative Psychology, 123(3), 231.PubMedGoogle Scholar
  43. Cronin, K. A., Schroeder, K. K. E., & Snowdon, C. T. (2010). Prosocial behaviour emerges independent of reciprocity in cottontop tamarins. Proceedings of the Royal Society B, 277(1701), 3845–3851.PubMedGoogle Scholar
  44. Cronin, K. A., & Snowdon, C. T. (2008). The effects of unequal reward distributions on cooperative problem solving by cottontop tamarins, Saguinus oedipus. Animal Behaviour, 75(1), 245–257.PubMedGoogle Scholar
  45. de Waal, F. B. M. (1977). The organization of agonistic relations within two captive groups of java-monkeys (Macaca fascicularis). Zeitschrift für Tierpsychologie, 44(3), 225–282.PubMedGoogle Scholar
  46. de Waal, F. B. M. (1989). Chimpanzee politics: Power and sex among apes. Baltimore: Johns Hopkins University Press.Google Scholar
  47. de Waal, F. B. M. (1992). Appeasement, celebration, and food sharing in the two Pan species. Topics in primatology, 1, 37–50.Google Scholar
  48. de Waal, F. B. M. (1995). Bonobo sex and society. Scientific American, 272(3), 82–88.PubMedGoogle Scholar
  49. de Waal, F. B. M. (1997). Food transfers through mesh in brown capuchins. Journal of Comparative Psychology, 111(4), 370.PubMedGoogle Scholar
  50. de Waal, F. B. M. (1997a). The chimpanzee’s service economy: food for grooming. Evolution and Human Behavior, 18(6), 375–386.Google Scholar
  51. de Waal, F. B. M., & Berger, M. L. (2000). Payment for labour in monkeys. Nature, 404(6778), 563.PubMedGoogle Scholar
  52. de Waal, F. B. M., Leimgruber, K., & Greenberg, A. R. (2008). Giving is self-rewarding for monkeys. Proceedings of the National Academy of Sciences of the United States of America, 105(36), 13685.PubMedGoogle Scholar
  53. Deaner, R. O., Isler, K., Burkart, J., & van Schaik, C. (2007). Overall brain size, and not encephalization quotient, best predicts cognitive ability across non-human primates. Brain, Behavior and Evolution, 70(2), 115–124.PubMedGoogle Scholar
  54. Dindo, M., & de Waal, F. B. M. (2007). Partner effects on food consumption in brown capuchin monkeys. American Journal of Primatology, 69(4), 448–456.PubMedGoogle Scholar
  55. Dufour, V., Pelé, M., Neumann, M., Thierry, B., & Call, J. (2009). Calculated reciprocity after all: Computation behind token transfers in orangutans. Biology Letters, 5(2), 172–175.PubMedGoogle Scholar
  56. Dufour, V., Pelé, M., Sterck, E., & Thierry, B. (2007). Chimpanzee (Pan troglodytes) anticipation of food return: Coping with waiting time in an exchange task. Journal of Comparative Psychology, 121(2), 145.PubMedGoogle Scholar
  57. Edwards, S. D., & Snowdon, C. T. (1980). Social behavior of captive, group-living orangutans. International Journal of Primatology, 1(1), 39–62.Google Scholar
  58. Evans, T. A., & Beran, M. J. (2007a). Delay of gratification and delay maintenance by rhesus macaques (Macaca mulatta). The Journal of General Psychology, 134(2), 199–216.PubMedGoogle Scholar
  59. Evans, T. A., & Beran, M. J. (2007b). Chimpanzees use self-distraction to cope with impulsivity. Biology Letters, 3(6), 599–602.PubMedGoogle Scholar
  60. Evans, T. A., & Westergaard, G. C. (2006). Self-control and tool use in tufted capuchin monkeys (Cebus apella). Journal of Comparative Psychology, 120(2), 163.PubMedGoogle Scholar
  61. Fehr, E., & Schmidt, K. M. (1999). A theory of fairness, competition, and cooperation. The Quarterly Journal of Economics, 114(3), 817.Google Scholar
  62. Feistner, A. T. C., & Price, E. C. (1999). Cross-generic food sharing in tamarins. International Journal of Primatology, 20(2), 231–236.Google Scholar
  63. Feistner, A. T. C., & Price, E. C. (2000). Food sharing in black lion tamarins (Leontopithecus chrysopygus). American Journal of Primatology, 52(1), 47–54.PubMedGoogle Scholar
  64. Fernandez-Duque, E., Rotundo, M., & Sloan, C. (2001). Density and population structure of owl monkeys (Aotus azarai) in the Argentinean Chaco. American Journal of Primatology, 53(3), 99–108.PubMedGoogle Scholar
  65. Fletcher, G. E. (2008). Attending to the outcome of others: Disadvantageous inequity aversion in male capuchin monkeys (Cebus apella). American Journal of Primatology, 70(9), 901–905.PubMedGoogle Scholar
  66. Fontenot, M., Watson, S., Roberts, K., & Miller, R. (2007). Effects of food preferences on token exchange and behavioural responses to inequality in tufted capuchin monkeys, Cebus apella. Animal Behaviour, 74(3), 487–496.Google Scholar
  67. Fragaszy, D. M., Visalberghi, E., & Fedigan, L. M. (2004). The complete capuchin: The biology of the genus Cebus. New york: Cambridge University press.Google Scholar
  68. Frank, R. H. (1988). Passions within reason: The strategic role of the emotions. New York: WW Norton & Co.Google Scholar
  69. Frank, R. H. (2001). Cooperation through emotional commitment. Evolution and the capacity for commitment, 3, 57–76.Google Scholar
  70. Freeman, H. D., Sullivan, J., Schultz-Darken, N., Williams, L. E., & Brosnan, S. F (in review). All in the family? Cooperative breeders’ response to inequity provides support for the cooperative breeder hypothesis. Biology Letters.Google Scholar
  71. Galdikas, B. M. F. (1988). Orangutan diet, range, and activity at Tanjung Puting, Central Borneo. International Journal of Primatology, 9(1), 1–35.Google Scholar
  72. Garber, P. A., Moya, L., & Malaga, C. (1984). A preliminary field study of the moustached tamarin monkey (Saguinus mystax) in northeastern Peru: Questions concerned with the evolution of a communal breeding system. Folia Primatologica, 42(1), 17.Google Scholar
  73. Goldizen, A. W. (1987). Tamarins and marmosets: Communal care of offspring. In B. B. Smuts, D. L. Cheney, R. M. Seyfarth, R. Wrangham, & T. T. Struhsaker (Eds.), Primate societies (pp. 34–43). Chicago: University of Chicago Press.Google Scholar
  74. Gomes, C. M., & Boesch, C. (2009). Wild chimpanzees exchange meat for sex on a long-term basis. PLoS ONE, 4(4), e5116.PubMedGoogle Scholar
  75. Goodall, J. (1986). The chimpanzees of Gombe: Patterns of behavior. Cambridge, MA: Belknap Press of Harvard University Press.Google Scholar
  76. Gros-Louis, J., Perry, S., & Manson, J. H. (2003). Violent coalitionary attacks and intraspecific killing in wild white-faced capuchin monkeys (Cebus capucinus). Primates, 44(4), 341–346.PubMedGoogle Scholar
  77. Gumert, M. D. (2007a). Grooming and infant handling interchange in Macaca fascicularis: The relationship between infant supply and grooming payment. International Journal of Primatology, 28(5), 1059–1074.Google Scholar
  78. Gumert, M. D. (2007b). Payment for sex in a macaque mating market. Animal Behaviour, 74(6), 1655–1667.Google Scholar
  79. Gumert, M. D., & Ho, M. H. R. (2008). The trade balance of grooming and its coordination of reciprocation and tolerance in Indonesian long-tailed macaques (Macaca fascicularis). Primates, 49(3), 176–185.PubMedGoogle Scholar
  80. Harcourt, A. H. (1978). Strategies of emigration and transfer by primates, with particular reference to gorillas. Zeitschrift für Tierpsychologie, 48(4), 401–420. doi:10.1111/j.1439-0310.1978.tb00267.x.PubMedGoogle Scholar
  81. Harcourt, A. H. (1979a). Social relationships between adult male and female mountain gorillas in the wild. Animal Behaviour, 27, 325–342.Google Scholar
  82. Harcourt, A. H. (1979b). Social relationships among adult female mountain gorillas. Animal Behaviour, 27, 251–264.Google Scholar
  83. Harcourt, A. H., & Stewart, K. J. (2007). Gorilla society: Conflict, compromise and cooperation between the sexes. Chicago: University of Chicago Press.Google Scholar
  84. Harcourt, A. H., & de Waal, F. B. M. (1992). Coalitions and alliances in humans and other animals. Oxford: Oxford University Press.Google Scholar
  85. Hare, B., Call, J., Agnetta, B., & Tomasello, M. (2000). Chimpanzees know what conspecifics do and do not see. Animal Behaviour, 59(4), 771–785.PubMedGoogle Scholar
  86. Hare, B., Melis, A. P., Woods, V., Hastings, S., & Wrangham, R. (2007). Tolerance allows bonobos to outperform chimpanzees on a cooperative task. Current Biology, 17(7), 619–623.PubMedGoogle Scholar
  87. Harlow, H. F. (1949). The formation of learning sets. Psychological Review, 56(1), 51.PubMedGoogle Scholar
  88. Hattori, Y., Kuroshima, H., & Fujita, K. (2005). Cooperative problem solving by tufted capuchin monkeys (Cebus apella): Spontaneous division of labor, communication, and reciprocal altruism. Journal of Comparative Psychology, 119(3), 335.PubMedGoogle Scholar
  89. Hemelrijk, C. K., Laere, G. J., & Hooff, J. A. (1992). Sexual exchange relationships in captive chimpanzees? Behavioral Ecology and Sociobiology, 30(3), 269–275.Google Scholar
  90. Hockings, K. J., Humle, T., Anderson, J. R., Biro, D., Sousa, C., Ohashi, G., et al. (2007). Chimpanzees share forbidden fruit. PLoS ONE, 2(9), e886.PubMedGoogle Scholar
  91. Hohmann, G., & Fruth, B. (1993). Field observations on meat sharing among bonobos (Pan paniscus). Folia Primatologica, 60(4), 225–229.Google Scholar
  92. Hopper, L. M., Lambeth, S. P., Schapiro, S. J., Bernacky, B. J., & Brosnan, S. F (in review). The ontogeny of social comparisons by rhesus macaques (Macaca mulatta). Developmental Science.Google Scholar
  93. Horowitz, A. (2012). Fair is fine, but more is better: Limits to inequity aversion in the domestic dog. Social Justice Research, 25(2). doi:10.1007/s11211-012-0158-7.
  94. Hrdy, S. B. (2009). Mothers and others: The evolutionary origins of mutual understanding. Cambridge, MA: Belknap Press.Google Scholar
  95. Idani, G. (1991). Social relationships between immigrant and resident bonobo (Pan paniscus) females at Wamba. Folia Primatologica, 57(2), 83–95.Google Scholar
  96. Jaeggi, A. V., Stevens, J. M. G., & Van Schaik, C. P. (2010). Tolerant food sharing and reciprocity is precluded by despotism among bonobos but not chimpanzees. American Journal of Physical Anthropology, 143(1), 41–51.PubMedGoogle Scholar
  97. Jaeggi, A. V., van Noordwijk, M. A., & van Schaik, C. P. (2008). Begging for information: Mother–offspring food sharing among wild Bornean orangutans. American Journal of Primatology, 70(6), 533–541.PubMedGoogle Scholar
  98. Janson, C. H., & Brosnan, S. F. (in review). Experimental methods in primatology. In E. Sterling, N. Bynum & M. Blair (Eds.), Primate Ecology and Conservation: A Handbook of Techniques. Oxford: Oxford University Press.Google Scholar
  99. Jerison, H. (1973). Evolution of the brain and intelligence. New York: Academic Press.Google Scholar
  100. Kano, T. (1982). The social group of pygmy chimpanzees (Pan paniscus) of Wamba. Primates, 23(2), 171–188.Google Scholar
  101. Kano, T. (1992). The last ape: Pygmy chimpanzee behavior and ecology. Ann Arbor, MI: Univ Microfilms Inc.Google Scholar
  102. Koenig, A. (1995). Group size, composition, and reproductive success in wild common marmosets (Callithrix jacchus). American Journal of Primatology, 35(4), 311–317.Google Scholar
  103. Kuroda, S. (1984). Interaction over food among pygmy chimpanzees. In R. L. Susman (Ed.), The pygmy chimpanzee, evolutionary biology and behaviour (pp. 301–324). New York: Plenum Press.Google Scholar
  104. Lakshminarayanan, V. R., & Santos, L. R. (2008). Capuchin monkeys are sensitive to others’ welfare. Current Biology, 18(21), R999–R1000.PubMedGoogle Scholar
  105. Lawrence, D. H., & Festinger, L. (1962). Deterrents and reinforcement: The psychology of insufficient reward. Stanford, KY: Stanford University Press.Google Scholar
  106. Lazaro-Perea, C. (2001). Intergroup interactions in wild common marmosets, Callithrix jacchus: Territorial defence and assessment of neighbours. Animal Behaviour, 62(1), 11–21.Google Scholar
  107. MacKinnon, J. (1974). The behaviour and ecology of wild orangutans (Pongo pygmaeus). Animal Behaviour, 22(1), 3–74.Google Scholar
  108. Maestripieri, D., Ross, S. K., & Megna, N. L. (2002). Mother–infant interactions in western lowland gorillas (Gorilla gorilla gorilla): Spatial relationships, communication and opportunities for social learning. Journal of Comparative Psychology, 116(3), 219.PubMedGoogle Scholar
  109. Marshall-Pescini, S., Passalacqua, C., Ferrario, A., Valsecchi, P., & Prato-Previde, E. (2011). Social eavesdropping in the domestic dog. Animal Behaviour, 81, 1177–1183.Google Scholar
  110. Martin, R. D. (1984). Body size, brain size and feeding strategies. In D. J. Chivers, B. A. Wood, & A. Bilsborough (Eds.), Food acquisition and processing in primates (pp. 73–103). New York: Plenum Press.Google Scholar
  111. Massen, J. J. M. (2010). ‘Friendship’ in macaques: Economics and emotions. PhD thesis, Utrecht University, Utrecht.Google Scholar
  112. Massen, J. J. M., Luyten, I. J. A. F., Spruijt, B. M., & Sterck, E. H. M. (2011). Benefiting friends or dominants: Prosocial choices mainly depend on rank position in long-tailed macaques (Macaca fascicularis). Primates, 52, 237–247.PubMedGoogle Scholar
  113. Massen, J. J. M., Van Den Berg, L. M., Spruijt, B. M., & Sterck, E. H. M. (2010). Generous leaders and selfish underdogs: Pro-sociality in despotic macaques. PLoS ONE, 5(3), e9734.PubMedGoogle Scholar
  114. Massen, J. J. M., van den Berg, L. M., Spruijt, B. M., & Sterck, E. H. M. (2011). Inequity aversion in relation to effort and relationship quality in long-tailed Macaques (Macaca fascicularis). American Journal of Primatology, 74(2), 145–156.PubMedGoogle Scholar
  115. Mazur, J. E. (1987). An adjusting procedure for studying delayed reinforcement. In M. L. Commons, J. E. Mazur, J. A. Nevin, & H. Rachlin (Eds.), Quantitative analyses of behavior: Vol. 5. The Effect of delay and intervening events on reinforcement value (pp. 55–73). Hillsdale, NJ: Erlbaum.Google Scholar
  116. Melis, A. P., Hare, B., & Tomasello, M. (2006a). Chimpanzees recruit the best collaborators. Science, 311(5765), 1297–1300.PubMedGoogle Scholar
  117. Melis, A. P., Hare, B., & Tomasello, M. (2006b). Engineering cooperation in chimpanzees: tolerance constraints on cooperation. Animal Behaviour, 72(2), 275–286. doi:10.1016/j.anbehav.2005.09.018.Google Scholar
  118. Mitani, J. C., & Watts, D. P. (2001). Why do chimpanzees hunt and share meat? Animal Behaviour, 61(5), 915–924.Google Scholar
  119. Mitchell, C. L. (1994). Migration alliances and coalitions among adult male South American squirrel monkeys (Saimiri sciureus). Behaviour, 130, 169–190.Google Scholar
  120. Neiworth, J. J., Johnson, E. T., Whillock, K., Greenberg, J., & Brown, V. (2009). Is a sense of inequity an ancestral primate trait? Testing social inequity in cotton top tamarins (Saguinus oedipus). Journal of Comparative Psychology, 123(1), 10.PubMedGoogle Scholar
  121. Nishida, T., Hasegawa, T., Hayaki, H., Takahata, Y., & Uehara, S. (1992). Meat-sharing as a coalition strategy by an alpha male chimpanzee. Topics in primatology, 1, 159–174.Google Scholar
  122. Olson, K. (2012). Social Justice Research (forthcoming).Google Scholar
  123. Parish, A. R. (1994). Sex and food control in the “uncommon chimpanzee”: How Bonobo females overcome a phylogenetic legacy of male dominance. Ethology and Sociobiology, 15(3), 157–179.Google Scholar
  124. Parish, A. R. (1996). Female relationships in bonobos (Pan paniscus). Human Nature, 7(1), 61–96.Google Scholar
  125. Perry, S. (1998). Male–male social relationships in wild white-faced capuchins, Cebus capucinus. Behaviour, 135, 139–172.Google Scholar
  126. Perry, S., & Rose, L. (1994). Begging and transfer of coati meat by white-faced capuchin monkeys, Cebus capucinus. Primates, 35(4), 409–415.Google Scholar
  127. Petit, O., Desportes, C., & Thierry, B. (1992). Differential probability of “coproduction” in two species of macaque (Macaca tonkeana, M. mulatta). Ethology, 90(2), 107–120.Google Scholar
  128. Pierce, J. & Bekoff, M. (2012). Wild justice redux: What we know about social justice in animals and why it matters. Social Justice Research, 25(2). doi:10.1007/s11211-012-0154-y.
  129. Preuschoft, S., Wang, X., Aureli, F., & de Waal, F. B. M. (2002). Reconciliation in captive chimpanzees: A reevaluation with controlled methods. International Journal of Primatology, 23(1), 29–50.Google Scholar
  130. Price, E. C., & Feistner, A. T. C. (2001). Food sharing in pied bare-faced tamarins (Saguinus bicolor bicolor): Development and individual differences. International Journal of Primatology, 22(2), 231–241.Google Scholar
  131. Pruetz, J., & Lindshield, S. (2011). Plant-food and tool transfer among savanna chimpanzees at Fongoli, Senegal. Primates, 53, 133–145.PubMedGoogle Scholar
  132. Raihani, N.J., & McAuliffe, K. (2012). Does inequity aversion motivate punishment? Cleaner fish as a model system. Social Justice Research, 25(2). doi:10.1007/s11211-012-0157-8.
  133. Range, F., Leitner, K., & Virányi, Z. (2012). The influence of the relationship and motivation on inequity aversion in dogs. Social Justice Research, 25(2). doi:10.1007/s11211-012-0155-x.
  134. Rapaport, L. G. (1999). Provisioning of young in golden lion tamarins (Callitrichidae, Leontopithecus rosalia): A test of the information hypothesis. Ethology, 105(7), 619–636.Google Scholar
  135. Rapaport, L. G. (2006). Provisioning in wild golden lion tamarins (Leontopithecus rosalia): Benefits to omnivorous young. Behavioral Ecology, 17(2), 212.Google Scholar
  136. Rapaport, L. G., & Ruiz-Miranda, C. R. (2002). Tutoring in wild golden lion tamarins. International Journal of Primatology, 23(5), 1063–1070.Google Scholar
  137. Reader, S. M., Hager, Y., & Laland, K. N. (2011). The evolution of primate general and cultural intelligence. Philosophical Transactions of the Royal Society B, 366(1567), 1017–1027.Google Scholar
  138. Richards, J. B., Mitchell, S. H., De Wit, H., & Seiden, L. S. (1997). Determination of discount functions in rats with an adjusting-amount procedure. Journal of the Experimental Analysis of Behavior, 67(3), 353.PubMedGoogle Scholar
  139. Robbins, M. M. (1995). A demographic analysis of male life history and social structure of mountain gorillas. Behaviour, 132, 21–47.Google Scholar
  140. Roma, P. G., Silberberg, A., Ruggiero, A. M., & Suomi, S. J. (2006). Capuchin monkeys, inequity aversion, and the frustration effect. Journal of Comparative Psychology, 120(1), 67.PubMedGoogle Scholar
  141. Rosati, A., Hare, B., & Santos, L. (2010). Primate social cognition: Thirty years after Premack and Woodruff. Primate Neuroethology, 1(9), 117–144.Google Scholar
  142. Rose, L. M. (1994). Benefits and costs of resident males to females in white-faced capuchins, Cebus capucinus. American Journal of Primatology, 32(4), 235–248.Google Scholar
  143. Rose, L. M. (1997). Vertebrate predation and food-sharing in Cebus and Pan. International Journal of Primatology, 18(5), 727–765.Google Scholar
  144. Roth, G., & Dicke, U. (2012). Evolution of the brain and intelligence in primates. In M. A. Hofman & D. Falk (Eds.), Evolution of the Primate Brain: From Neuron to Behavior (1st ed., pp. 413–430). Oxford: Elsevier Science Ltd.Google Scholar
  145. Rotundo, M., Fernandez-Duque, E., & Dixson, A. F. (2005). Infant development and parental care in free-ranging Aotus azarai azarai in Argentina. International Journal of Primatology, 26(6), 1459–1473.Google Scholar
  146. Rotundo, M., Fernandez-Duque, E., & Gimenez, M. (2002). Biparental care in the night monkey (Aotus azarai) of Formosa, Argentina. Neotropical Primates, 10, 70–72.Google Scholar
  147. Savage, A., Snowdon, C. T., Giraldo, L. H., & Soto, L. H. (1996). Parental care patterns and vigilance in wild cotton-top tamarins (Saguinus oedipus). In M. A. Norconk, A. L. Rosenberger, & P. A. Garber (Eds.), Adaptive radiations of neotropical primates (pp. 187–199). New York: Plenum Press.Google Scholar
  148. Schaller, G. E. (1963). The mountain gorilla: Ecology and behavior. Oxford: University of Chicago Press.Google Scholar
  149. Silberberg, A., Crescimbene, L., Addessi, E., Anderson, J. R., & Visalberghi, E. (2009). Does inequity aversion depend on a frustration effect? A test with capuchin monkeys (Cebus apella). Animal Cognition, 12(3), 505–509.PubMedGoogle Scholar
  150. Silk, J. B. (1978). Patterns of food sharing among mother and infant chimpanzees at Gombe National Park, Tanzania. Folia Primatologica, 29(2), 129–141.Google Scholar
  151. Silk, J. B., Brosnan, S. F., Vonk, J., Henrich, J., Povinelli, D. J., Richardson, A. S., et al. (2005). Chimpanzees are indifferent to the welfare of unrelated group members. Nature, 437(7063), 1357–1359.PubMedGoogle Scholar
  152. Skitka, L. (2012). Social Justice Research (forthcoming).Google Scholar
  153. Smuts, B. B., Cheney, D. L., Seyfarth, R. M., Wrangham, R. W., & Struhsaker, T. T. (1987). Primate societies. Chicago: University of Chicago Press.Google Scholar
  154. Snowdon, C. T. (1996). Infant care in cooperatively breeding species. Advances in the Study of Behavior, 25, 643–689.Google Scholar
  155. Sommer, R. (1967). Small group ecology. Psychological Bulletin, 67(2), 145.PubMedGoogle Scholar
  156. Sousa, C., & Matsuzawa, T. (2001). The use of tokens as rewards and tools by chimpanzees (Pan troglodytes). Animal Cognition, 4(3), 213–221.Google Scholar
  157. Stevens, J. R. (2004). The selfish nature of generosity: Harassment and food sharing in primates. Proceedings of the Royal Society of London. Series B, 271(1538), 451.PubMedGoogle Scholar
  158. Stevens, J. R. (2010). Donor payoffs and other-regarding preferences in cotton-top tamarins (Saguinus oedipus). Animal Cognition, 13(4), 663–670.PubMedGoogle Scholar
  159. Stevens, J. R., Rosati, A. G., Ross, K. R., & Hauser, M. D. (2005). Will travel for food: Spatial discounting in two new world monkeys. Current Biology, 15(20), 1855–1860.PubMedGoogle Scholar
  160. Sussman, R., & Garber, P. (1987). A new interpretation of the social organization and mating system of the Callitrichidae. International Journal of Primatology, 8(1), 73–92.Google Scholar
  161. Szalda-Petree, A. D., Craft, B. B., Martin, L. M., & Deditius-Island, H. K. (2004). Self-control in rhesus macaques (Macaca mulatta): Controlling for differential stimulus exposure. Perceptual and Motor Skills, 98(1), 141–146. doi:10.2466/pms.98.1.141-146.PubMedGoogle Scholar
  162. Takimoto, A., & Fujita, K. (2011). I acknowledge your help: Capuchin monkeys’ sensitivity to others’ labor. Animal Cognition, 14, 715–725.PubMedGoogle Scholar
  163. Takimoto, A., Kuroshima, H., & Fujita, K. (2010). Capuchin monkeys (Cebus apella) are sensitive to others’ reward: An experimental analysis of food-choice for conspecifics. Animal Cognition, 13(2), 249–261.PubMedGoogle Scholar
  164. Talbot, C. F., Freeman, H. D., Williams, L. E., & Brosnan, S. F. (2011). Squirrel monkeys’ response to inequitable outcomes indicates a behavioural convergence within the primates. Biology Letters, 7(5), 680–682.PubMedGoogle Scholar
  165. Thierry, B. (2000). Covariation of conflict management patterns across macaque species. In F. Aureli & F. B. M. de Waal (Eds.), Natural conflict resolution (pp. 106–128). Berkeley: University of California Press.Google Scholar
  166. Tobin, H., Logue, A., Chelonis, J. J., & Ackerman, K. T. (1996). Self-control in the monkey Macaca fascicularis. Animal Learning & Behavior, 24, 168–174.Google Scholar
  167. Tomasello, M., & Call, J. (1997). Primate cognition. New York: Oxford University Press.Google Scholar
  168. Van Leeuwen, E. J. C., Zimmermann, E., & Ross, M. D. (2011). Responding to inequities: Gorillas try to maintain their competitive advantage during play fights. Biology Letters, 7(1), 39–42.PubMedGoogle Scholar
  169. van Noordwijk, M. A., & van Schaik, C. P. (1985). Male migration and rank acquisition in wild long-tailed macaques (Macaca fascicularis). Animal Behaviour, 33(3), 849–861.Google Scholar
  170. van Noordwijk, M. A., & van Schaik, C. P. (2009). Intersexual food transfer among orangutans: Do females test males for coercive tendency? Behavioral Ecology and Sociobiology, 63(6), 883–890.Google Scholar
  171. van Schaik, C. (2004). Among orangutans: Red apes and the rise of human culture. Cambridge, MA: Belknap Press.Google Scholar
  172. Van Wolkenten, M., Brosnan, S. F., & de Waal, F. B. M. (2007). Inequity responses of monkeys modified by effort. Proceedings of the National Academy of Sciences of the United States of America, 104(47), 18854.PubMedGoogle Scholar
  173. Wallis, J. (1992). Chimpanzee genital swelling and its role in the pattern of sociosexual behavior. American Journal of Primatology, 28(2), 101–113.Google Scholar
  174. Watts, D. P. (1997). Agonistic interventions in wild mountain gorilla groups. Behaviour, 134, 23–57.Google Scholar
  175. Werdenich, D., & Huber, L. (2002). Social factors determine cooperation in marmosets. Animal Behaviour, 64(5), 771–781.Google Scholar
  176. White, F. J. (1994). Food sharing in wild pygmy chimpanzees, Pan paniscus. Current Primatology, 2, 1–10.Google Scholar
  177. Widdig, A., Nürnberg, P., Krawczak, M., Streich, W. J., & Bercovitch, F. B. (2001). Paternal relatedness and age proximity regulate social relationships among adult female rhesus macaques. Proceedings of the National Academy of Sciences of the United States of America, 98(24), 13769–13773. doi:10.1073/pnas.241210198.PubMedGoogle Scholar
  178. Wolovich, C. K., Evans, S., & French, J. A. (2008). Dads do not pay for sex but do buy the milk: Food sharing and reproduction in owl monkeys (Aotus spp.). Animal Behaviour, 75(3), 1155–1163.Google Scholar
  179. Wolovich, C. K., Feged, A., Evans, S., & Green, S. (2006). Social patterns of food sharing in monogamous owl monkeys. American Journal of Primatology, 68(7), 663–674.PubMedGoogle Scholar
  180. Wolovich, C. K., Perea-Rodriguez, J. P., & Fernandez-Duque, E. (2008). Food transfers to young and mates in wild owl monkeys (Aotus azarai). American Journal of Primatology, 70(3), 211–221.PubMedGoogle Scholar
  181. Wright, P. C. (1984). Biparental care in Aotus trivirgatus and Callicebus moloch. In M. F. Small (Ed.), Female primates: Studies by women primatologists (pp. 59–75). New York: Alan R. Liss, Inc.Google Scholar
  182. Wright, P. C. (1994). The behavior and ecology of the owl monkey. In J. F. Baer, R. E. Weller, & I. Kakoma (Eds.), The owl monkey (pp. 97–112). New York: Academic Press.Google Scholar
  183. Yamagishi, T., Horita, Y., Takagishi, H., Shinada, M., Tanida, S., & Cook, K. S. (2009). The private rejection of unfair offers and emotional commitment. Proceedings of the National Academy of Sciences of the United States of America, 106(28), 11520–11523.PubMedGoogle Scholar
  184. Yamamoto, S., & Takimoto, A. (2012). Social Justice Research (forthcoming).Google Scholar

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© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Department of Psychology & Language Research CenterGeorgia State UniversityAtlantaUSA

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