Play and Emotion

  • Stan A. KuczajIIEmail author
  • Kristina M. Horback
Part of the The Science of the Mind book series (The Science of the Mind)


The most important feature in interpreting observed emotions in both humans and animals is the context in which the assumed emotion occurs. The same can be said for play. Wrestling between two individuals can be interpreted as either aggressive or playful depending on the amount of self-handicapping, mutual pauses, and damaging fighting tactics that occur during the wrestling bout. Play and emotion are intimately intertwined, and this relationship provides an invaluable context in which to study emotions. In this chapter, we discuss the inherent difficulties in the investigation of play and emotion. We also consider the roles of solitary and social play behavior in individuals’ acquisition of both physical and mental skills, including the manner in which play may facilitate the manipulation of one’s own emotions in pretense and the ability to correctly interpret and respond to a play partner’s emotions.


Positive Emotion Killer Whale Bottlenose Dolphin Play Behavior Social Play 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. Arnold MB (1960) Emotion and personality. Columbia University Press, New YorkGoogle Scholar
  2. Aureli F, Preston SD, de Waal FBM (1999) Heart rate responses to social interactions in free-moving rhesus macaques (Macaca mulatta): a pilot study. J Comp Psychol 113:59–65PubMedGoogle Scholar
  3. Averill JR (1980) A constructivist view of emotion. In: Plutchik R, Kellerman H (eds) Emotion: theory, research and experience, vol I, Theories of emotion. Academic, New York, pp 305–339Google Scholar
  4. Bain A (1859) The emotions and the will. Longmans, LondonGoogle Scholar
  5. Balcombe J (2009) Animal pleasure and its moral significance. Appl Anim Behav Sci 118:208–216Google Scholar
  6. Baldwin JD, Baldwin JI (1974) Exploration and social play in squirrel monkeys (Saimiri). Am Zool 14:303–315Google Scholar
  7. Bateson G (1955) A theory of play and fantasy. Psychiatr Res Rep 2:39–51Google Scholar
  8. Bateson G (1972) Steps to an ecology of mind. Ballantine Books, New YorkGoogle Scholar
  9. Beach FA (1945) Current concepts of play in animals. Amer Nat 79:523–541Google Scholar
  10. Bekoff M (1975) The communication of play intention: are play signals functional? Semiotica 15:231–239Google Scholar
  11. Bekoff M (1977) Social communication in canids: evidence for the evolution of a stereotyped mammalian display. Science 197:1097–1099PubMedGoogle Scholar
  12. Bekoff M (1984) Social play behavior. Bioscience 34:228–233Google Scholar
  13. Bekoff M (1995) Play signals as punctuation: the structure of social play in canids. Behavior 132:419–429Google Scholar
  14. Bekoff M (2000) Animal emotions: exploring passionate natures. Bioscience 50:861–870Google Scholar
  15. Bekoff M (2002) Minding animals: awareness, emotions and heart. Oxford University Press, New YorkGoogle Scholar
  16. Bekoff M (2007) The emotional lives of animals. New World Library, NovatoGoogle Scholar
  17. Bekoff M, Allen C (1998) Intentional communication and social play: how and why animals negotiate and agree to play. In: Bekoff M, Byers JA (eds) Animal play: evolutionary, comparative, and ecological perspectives. Cambridge University Press, Cambridge, pp 97–114Google Scholar
  18. Bekoff M, Byers JA (1981) A critical reanalysis of the ontogeny of mammalian social and locomotor play: an ethological hornet’s nest. In: Immelman K, Barlow GW, Petrinovich L (eds) Behavioral development: the Bielefeld interdisciplinary project. Cambridge University Press, New York, pp 296–337Google Scholar
  19. Bekoff M, Byers JA (1998) Animal play: evolutionary, comparative, and ecological perspectives. Cambridge University Press, CambridgeGoogle Scholar
  20. Bel’kovich VM, Ivanova EE, Kozarovitsky LB, Novikova EV et al (1991) Dolphin play behavior in the open sea. In: Pryor K, Norris KS (eds) Dolphin societies. University of California Press, Los Angeles, pp 67–77Google Scholar
  21. Berger J (1980) The ecology, structure and functions of social play in bighorn sheep (Ovis canadensis). J Zool 192:531–542Google Scholar
  22. Berridge KC, Kringelbach ML (2008) Affective neuroscience of pleasure: reward in humans and animals. Psychopharmacology 199:457–480PubMedGoogle Scholar
  23. Biben M (1998) Squirrel monkey playfighting: making the case for a cognitive training hypothesis. In: Bekoff M, Byers JA (eds) Animal play: evolutionary, comparative and ecological approaches. Cambridge University Press, New YorkGoogle Scholar
  24. Biben M, Symmes D (1986) Play vocalizations of squirrel monkeys (Saimire sciureus). Folia Primatol 46:173–182PubMedGoogle Scholar
  25. Bless H, Fielder K (1995) Affective states and the influence of activated general knowledge. Pers Soc Psychol Bull 21:766–778Google Scholar
  26. Blomqvist C, Mello I, Amundin M (2005) An acoustic play-fight signal in bottlenose dolphins (Tursiops truncatus) in human care. Aquat Mamm 31:187–194Google Scholar
  27. Bornstein MH, O’Reilly AW (1993) The role of play in the development of thought. Jossey-Bass Publishers, San FranciscoGoogle Scholar
  28. Boulton MJ, Smith PK (1992) The social nature of play fighting and play chasing: mechanisms and strategies underlying cooperation and compromise. In: Barkow JH, Cosmides L, Tooby J (eds) The adapted mind: evolutionary psychology and the generation of culture. Oxford University Press, New York, pp 429–444Google Scholar
  29. Bretherton I (1984) Representing the social world in symbolic play: reality and fantasy. In: Bretherton I (ed) Symbolic play: the development of social understanding. Academic, New York, pp 3–41Google Scholar
  30. Bretherton I (1989) Pretense: the form and function of make-believe play. Dev Rev 9:383–401Google Scholar
  31. Brown SL (1994) Animals at play. Natl Geogr 186:2–35Google Scholar
  32. Bruner J, Jolly A, Sylva K (1976) Play—its role in development and evolution. Basic Books, New YorkGoogle Scholar
  33. Burgdorf J, Panksepp J (2001) Tickling induces reward in adolescent rates. Physiol Behav 72:167–173PubMedGoogle Scholar
  34. Burghardt GM (2005) The genesis of animal play. MIT Press, CambridgeGoogle Scholar
  35. Burghardt GM, Burghardt LS (1972) Notes on behavioral development of two female black bear cubs: the first eight months. In: Herrero SM (ed) Bears—their biology and management. IUCN N. S., Morges, pp 207–220Google Scholar
  36. Byers JA (1984) Play in ungulates. In: Smith PK (ed) Play in animals and humans. Basil Blackwell, Oxford, pp 43–65Google Scholar
  37. Byers JA, Walker C (1995) Refining the motor training hypothesis of play. Amer Nat 146:25–40Google Scholar
  38. Cacioppo JT, Gardner WL (1999) Emotion. Annu Rev Psychol 50:191–214PubMedGoogle Scholar
  39. Carlstead K, Brown JL, Strawn W (1993) Behavioral and physiological correlates of stress in laboratory cats. Appl Anim Behav Sci 38:143–158Google Scholar
  40. Caro TM (1988) Adaptive significance of play: are we getting closer? Trends Ecol Evol 3:50–54PubMedGoogle Scholar
  41. Caro TM (1995) Short-term costs and correlates of play in cheetahs. Anim Behav 49:333–345Google Scholar
  42. Coelho AM, Bramblett CA (1982) Social play in differentially reared infant and juvenile baboons (Papio sp.). Am J Primatol 3:153–160Google Scholar
  43. Colvin JD, Tissier G (1985) Affiliation and reciprocity in sibling and peer relationships among free-ranging immature male rhesus monkeys. Anim Behav 33:959–977Google Scholar
  44. Cornelius RR (1996) The science of emotion. Research and tradition in the psychology of emotion. Prentice-Hall, Upper Saddle RiverGoogle Scholar
  45. Cosmides L, Tooby J (2000) Evolutionary psychology and the emotions. In: Lewis M, Haviland-Jones JM (eds) Handbook of emotions, 2nd edn. Guilford, New York, pp 91–115Google Scholar
  46. Creels S, Sands JL (2003) Is social stress a consequence of subordination or a cost of dominance? In: de Waal FBM, Tyack P (eds) Animal social complexity. Harvard University Press, Cambridge, pp 153–179Google Scholar
  47. Csikszentmihalyi M (1990) Flow: the psychology of optimal experience. HarperCollins, New YorkGoogle Scholar
  48. Damasio AR (1994) Descartes’ error: emotion, reason, and the human brain. Penguin, New YorkGoogle Scholar
  49. Darwin C (1872) The expression of emotions in man and animals. Murray, LondonGoogle Scholar
  50. Delfour F, Aulagnier S (1997) Bubbleblow in beluga whales (Delphinapterus leucas): a play activity? Behav Processes 40:183–186Google Scholar
  51. Diener E (1999) Introduction to the special section on the structure of emotion. J Pers Soc Psychol 76:803–804PubMedGoogle Scholar
  52. Drea CM, Hawk JE, Glickman SE (1996) Aggression decreases as play emerges in infant spotted hyaenas: preparation for joining the clan. Anim Behav 51:1323–1336Google Scholar
  53. Dudzinski KM (1998) Contact behavior and signal exchange in Atlantic spotted dolphins (Stenella frontalis). Aquat Mamm 24:129–142Google Scholar
  54. Eibl-Eibesfeldt I (1978) On the ontogeny of behavior of a male badger (Meles meles L.) with particular reference to play behavior. In: Mueller-Schwarze D (ed) Evolution of play behavior. benchmark papers in animal behavior, vol 10. Dowden Hutchins & Ross, StroudsburgGoogle Scholar
  55. Einon DE, Morgan MJ, Kibbler CC (1978) Brief periods of socialization and later behavior in the rat. Dev Psychobiol 11:213–225PubMedGoogle Scholar
  56. Ekman P (1999) Basic emotions. In: Dalgleish T, Power M (eds) Handbook of cognition and emotion, 2nd edn. Wiley, Sussex, pp 45–60Google Scholar
  57. Ekman P, Davidson RJ (eds) (1994) The nature of emotion: fundamental questions. Oxford University Press, New YorkGoogle Scholar
  58. Ekman P, Sorenson ER, Friesen WV (1969) Pan-cultural elements in facial displays of emotions. Science 164:86–88PubMedGoogle Scholar
  59. Fagen RM (1974) Selective and evolutionary aspects of animal play. Amer Nat 108:850–858Google Scholar
  60. Fagen RM (1981) Animal play behavior. Oxford University Press, New YorkGoogle Scholar
  61. Fagen RM (1993) Primate juveniles and primate play. In: Pereira ME, Fairbanks LA (eds) Juvenile primates: life history, development, and behavior. Oxford University Press, Oxford, pp 182–196Google Scholar
  62. Fagen RM, Fagen J (2004) Juvenile survival and benefits of play behavior in brown bears, Ursus arctos. Evol Ecol Res 6:89–102Google Scholar
  63. Fairbanks LA (1993) Juvenile vervet monkeys: establishing relationships and practicing skills for the future. In: Pereira ME, Fairbanks LA (eds) Juvenile primates: life history, development and behavior. Oxford University Press, New York, pp 211–227Google Scholar
  64. Feddersen-Petersen D (1991) The ontogeny of social play and angonistic behavior in selected canid species. Bonner Zoologische Beitraege 42:97–114Google Scholar
  65. Fein G (1987) Pretend play: creativity and consciousness. In: Gorlitz P, Wohlwill J (eds) Curiosity, imagination and play. Lawrence Erlbaum Associates, Hillsdale, pp 281–304Google Scholar
  66. Ferguson C, Macken M (1983) The role of play in phonological development, vol 4. Erlbaum, HillsdaleGoogle Scholar
  67. Ficken MS (1977) Avian play. Auk 94:573–582Google Scholar
  68. Fielder K (2001) Affective states trigger processes of assimilation and accommodation. In: Martin LL, Clore GL (eds) Theories of mood and cognition: a user’s guidebook. Lawrence Erlbaum Associates, Mahwah, pp 85–98Google Scholar
  69. Forgas JP (2008) Affect and cognition. Perspect Psychol Sci 3:94–101Google Scholar
  70. Frederickson BL (2001) The role of positive emotions in positive psychology: the broaden-and-build theory of positive emotions. Am Psychol 56:218–226Google Scholar
  71. Gard GC, Meier GW (1977) Social and contextual factors of play behavior in sub-adult rhesus monkeys. Primates 18:367–377Google Scholar
  72. Gewalt W (1989) Orinoco freshwater dolphins (Inia geoffrensis) using self-produced air bubble rings as toys. Aquat Mamm 15:73–79Google Scholar
  73. Goedeking P, Immelman K (1986) Vocal cues in cotton-top tamarin play vocalizations. Ethology 73:219–224Google Scholar
  74. Griffin DR (2001) Animal minds, beyond cognition to consciousness. University of Chicago Press, ChicagoGoogle Scholar
  75. Groos K (1898) The play of animals. Appleton & Company, New YorkGoogle Scholar
  76. Guinet C (1991) Intentional stranding apprenticeship and social play in killer whales (Orcinus orca). Can J Zool 69:2712–2716Google Scholar
  77. Hailman JP (1977) Optical signals: animal communication and light. Indian University Press, BloomingtonGoogle Scholar
  78. Hailman JP, Dzelzkalns JJI (1974) Mallard tail-wagging: punctuation for animal communication? Amer Nat 108:236–238Google Scholar
  79. Hall SL (1998) Object play by adult animals. In: Bekoff M, Byers JA (eds) Animal play. Cambridge University Press, Cambridge, pp 27–44Google Scholar
  80. Harcourt R (1991) The development of play in the South American fur seal. Ethology 88:191–202Google Scholar
  81. Harding EJ, Paul ES, Mendl M (2004) Cognitive bias and affective state. Nature 427:312PubMedGoogle Scholar
  82. Heinrich B (1999) Mind of the raven. Cliff Street Books, New YorkGoogle Scholar
  83. Heinrich B, Smolker R (1998) Play in common ravens (Corvus corax). In: Bekoff M, Byers JA (eds) Animal play: evolutionary, comparative, and ecological perspectives. Cambridge University Press, Cambridge, pp 27–44Google Scholar
  84. Horback KM, Friedman WR, Johnson CM (2010) The occurrence and context of S-posture display in captive belugas (Delphinapterus leucas). Int J Comp Psychol 23:689–700Google Scholar
  85. Ingmanson E (2002) Empathy in a bonobo. In: Mitchell RW (ed) Pretending and imagination in animals and children. Cambridge University Press, Cambridge, pp 280–284Google Scholar
  86. Isen AM, Daubman KA, Nowicki GP (1987) Positive affect facilitates creative problem solving. J Pers Soc Psychol 52:1122–1131PubMedGoogle Scholar
  87. James W (1884) What is an emotion? Mind 19:188–205Google Scholar
  88. Kagan J (2007) What is emotion? history, measures, and meanings. Yale University Press, New HavenGoogle Scholar
  89. Kano F, Tomonaga M (2010) Face scanning in chimpanzees and humans: continuity and discontinuity. Anim Behav 79:227–235Google Scholar
  90. Keenan E (1974) Conversational competence in children. J Child Lang 1:163–183Google Scholar
  91. Keverne EB, Martensz ND, Tuite B (1989) Beta-endorphin concentrations in cerebrospinal fluid of monkeys are influenced by grooming relationships. Psychoneuroendocrinology 14:155–161PubMedGoogle Scholar
  92. Kovacs KM (1987) Maternal behavior and early behavioural ontogeny of harp seals, Phoca groenlandica. Anim Behav 35:844–855Google Scholar
  93. Kuczaj SA II (1982) Language play and language acquisition. Adv Child Dev Behav 17:197–232PubMedGoogle Scholar
  94. Kuczaj SA II (1983) “I mell a kunk!” Evidence that children have more complex representations of word pronunciations which they simplify. J Psycholinguist Res 12:69–73PubMedGoogle Scholar
  95. Kuczaj SA II (1998) Is an evolutionary theory of language play possible? Curr Psychol Cogn 17:135–154Google Scholar
  96. Kuczaj II SA, Lacinak CT, Garver A, Scarpuzzi M (1998) Can animals enrich their own environment? In: Hare VJ, Worley KE (eds) Proceedings of the third international conference on environmental enrichment, The Shape of Enrichment, Orlando, pp 168–170Google Scholar
  97. Kuczaj SA II, Daly MJ (1979) The development of hypothetical reference in the speech of young children. J Child Lang 6:563–579PubMedGoogle Scholar
  98. Kuczaj SA II, Makecha R (2008) The role of play in the evolution and ontogeny of contextually flexible communication. In: Oller DK, Griebel U (eds) Evolution of communicative flexibility: complexity, creativity, and adaptability in human and animal communication. Cambridge, MIT Press, pp 253–277Google Scholar
  99. Kuczaj SA II, Highfill LE, Makecha R, Byerly HC (2012). Why do dolphins smile? A comparative perspective on dolphin emotions and emotional expressions. In: Watanabe S, Kuczaj S (eds), Emotions of animals and humans. SpringerGoogle Scholar
  100. Kuczaj SA II, Walker RT (2006) How do dolphins solve problems? In: Wasserman EA, Zentall TR (eds) Comparative cognition. University Press, Oxford, pp 580–601Google Scholar
  101. Kuczaj SA, Makecha R, Trone M, Paulos RD, Ramos JA (2006) Role of peers in cultural innovation and cultural transmission: evidence from the play of dolphin calves. Int J Comp Psychol 19:223–240Google Scholar
  102. Kuyk K, Dazey J, Erwin J (1976) Play patterns of pigtail monkey infants: effects of age and peer presence. J Biol Psychol 18:20–23Google Scholar
  103. Lancy DF (1980) Play in species adaptation. Annu Rev Anthropol 9:471–495Google Scholar
  104. Leresche LA (1976) Dyadic play in Hamadryas baboons. Behaviour 57:190–205Google Scholar
  105. Lillard AS (2002) Pretend play and cognitive development. In: Goswami U (ed) Handbook of cognitive development. Blackwell, London, pp 188–205Google Scholar
  106. Loeven J (1993) The ontogeny of social play in timber wolves, Canis lupus. Masters Thesis, Dalhousie UniversityGoogle Scholar
  107. Markus N, Croft DB (1995) Play behavior and its effects on social development of common chimpanzees (Pan troglodytes). Primates 36:213–225Google Scholar
  108. Martin P, Caro TM (1985) On the functions of play and its role in behavioral development. In: Rosenblatt JS, Beer C, Busnel MC, Slater PJB (eds) Advances in the study of behavior, vol 15. Academic, Orlando, pp 59–103Google Scholar
  109. Matsusaka T (2004) When does play panting occur during social play in wild chimpanzees? Primates 45:221–229PubMedGoogle Scholar
  110. Mayer JD, Salovey P, Caruso DR (2008) Emotional intelligence: new ability or eclectic traits? Am Psychol 63:503–517PubMedGoogle Scholar
  111. McCowan B, Reiss D (1997) Vocal learning in captive bottlenose dolphins: a comparison with humans and non-human animals. In: Snowdon CT, Hausberger M (eds) Social influences on vocal development. Cambridge University Press, Cambridge, pp 178–207Google Scholar
  112. McCowan B, Marino L, Vance E, Walke L, Reiss D (2000) Bubble ring play of bottlenose dolphins (Tursiops truncatus): implications for cognition. J Comp Psychol 114:98–106PubMedGoogle Scholar
  113. Miklosi A (1999) The ethological analysis of imitation. Biol Rev 74:347–374PubMedGoogle Scholar
  114. Mitchell RW (2002) Imitation as a perceptual process. In: Dautenhahn K, Nehanivc L (eds) Imitation in animals and artifacts. MIT Press, Cambridge, pp 441–469Google Scholar
  115. Mitchell RW, Thompson NS (1990) The effects of familiarity on dog-human play. Anthrozoõs 4:24–43Google Scholar
  116. Muller-Schwarze D, Stagge B, Muller-Schwarze C (1982) Play behaviour: persistence, decrease and energetic compensation during food shortage in deer fawns. Science 215:85–87PubMedGoogle Scholar
  117. Oatley K, Jenkins JM (1998) Understanding emotions. Blackwell, OxfordGoogle Scholar
  118. Oliveira A, Rossi AO, Silva L, Lau MC, Barreto RE (2010) Play behavior in nonhuman animals and the animal welfare issue. J Ethol 28:1–5Google Scholar
  119. Ortega JC, Bekoff M (1987) Avian play: comparative evolutionary and developmental trends. Auk 104:338–341Google Scholar
  120. Palagi E (2008) Sharing the motivation to play: the use of signals in adult bonobos. Anim Behav 75:887–896Google Scholar
  121. Palagi E, Mancini G (2011) Playing with the face: playful facial “chattering” and signal modulation in a monkey species (Theropithecus gelada). J Comp Psychol 125:11–21PubMedGoogle Scholar
  122. Panksepp J (1998) Attention deficit hyperactivity disorders, psychostimulants, and intolerance of childhood playfulness: a tragedy in the making. Curr Dir Psychol Sci 7:91–98Google Scholar
  123. Panksepp J (2007) Can PLAY diminish ADHD and facilitate the construction of the social brain? J Can Acad Child Adolesc Psychiatry 16:57–66PubMedGoogle Scholar
  124. Panksepp J, Burgdorf J (2000) 50 k-Hz chirping (laughter?) in response to conditioned and unconditioned tickle-induced reward in rats: effects of social housing and genetic variables. Behav Brain Res 115:25–38PubMedGoogle Scholar
  125. Parker ST, McKinney ML (1999) Origins of intelligence: the evolution of cognitive development in monkeys, apes and humans. Johns Hopkins Press, BaltimoreGoogle Scholar
  126. Paul ES, Harding EJ, Mendl M (2005) Measuring emotional processes in animals: the utility of a cognitive approach. Neurosci Biobehav Rev 29:469–491PubMedGoogle Scholar
  127. Paulos RD, Trone M, Kuczaj SA II (2010) Play in wild and captive cetaceans. Int J Comp Psychol 23:701–722Google Scholar
  128. Pellegrini AD, Bjorklund DF (2004) The ontogeny and phylogeny of children’s object and fantasy play. Human Nature 15:23–43Google Scholar
  129. Pellegrini AD, Smith PK (eds) (2005) The nature of play: great apes and humans. Guilford, New YorkGoogle Scholar
  130. Pellis SM (1983) Development of head and foot coordination in the Australian magpies Gymnorhina tibicen, and the function of play. Bird Behav 4:57–62Google Scholar
  131. Pellis SM, Pellis VC (1996) On knowing it’s only play: the role of play signals in play fighting. Aggress Violent Behav 1:249–268Google Scholar
  132. Pellis S, Pellis V (2009) The playful brain: venturing to the limits of neuroscience. Oneworld Publications, OxfordGoogle Scholar
  133. Pellis SM, Pellis VC (2011) To whom the play signal is directed: a study of headshaking in black-handed spider monkeys (Ateles geoffroyi). J Comp Psychol 125:1–10PubMedGoogle Scholar
  134. Piaget J (1951) Play, dreams and imitation in childhood. Norton, New YorkGoogle Scholar
  135. Piaget J (1952) The origins of intelligence in children. W.W. Norton & Company, New YorkGoogle Scholar
  136. Plutchik R (2001) The nature of emotions. Am Sci 89:344–350Google Scholar
  137. Power TG (2000) Play and exploration in children and animals. Erlbaum, MahwahGoogle Scholar
  138. Provine RR (2001) Laughter. Penguin, New YorkGoogle Scholar
  139. Pryor KW (1990) Non-acoustic communication in small cetaceans: glance, touch, position, gesture, and bubbles. In: Thomas JA, Kastelein R (eds) Sensory abilities of cetaceans. Plenum, New York, pp 537–544Google Scholar
  140. Rasa OAE (1984) A motivational analysis of object play in juvenile dwarf mongooses (Helogale undulate rufula). Anim Behav 32:579–589Google Scholar
  141. Rensch B (1973) Play and art in apes and monkeys. In: Symposia of the 4th international congress of primatology, vol 1, pp 102–123Google Scholar
  142. Reynolds PC (1976) Play, language, and human evolution. In: Bruner J, Jolly A, Sylva K (eds) Play. Basic Books, New York, pp 621–637Google Scholar
  143. Robbins T (1980) Still life with woodpecker. Bantam, New YorkGoogle Scholar
  144. Sade DS (1973) An ethogram for rhesus monkeys: I. Antithetical contrasts in posture and movement. Am J Phys Anthropol 38:537–542PubMedGoogle Scholar
  145. Sankey C, Richard-Yris MA, Leroy H, Henry S, Hausberger M (2010) Positive interactions lead to lasting positive memories in horses, Equus caballus. Anim Behav 79:869–875Google Scholar
  146. Scarlett WG, Naudeau S, Salonius-Pasternak D, Ponte I (2005) Children’s play. Sage Publications, Thousand OaksGoogle Scholar
  147. Singer DG, Singer JL (1990) The house of make-believe: children’s play and the developing imagination. Harvard University Press, CambridgeGoogle Scholar
  148. Snowdon CT, Elowson AM, Roush RS (1997) Social influences on vocal development in New World Primates. In: Snowdon CT, Hausberger M (eds) Social influences on vocal development. Cambridge University Press, Cambridge, pp 234–248Google Scholar
  149. Sommer V, Mendoza-Granados D (1995) Play as indicator of habitat quality: a field study of langur monkeys (Presbytis entellus). Ethology 99:177–192Google Scholar
  150. Špinka M, Newberry RC, Bekoff M (2001) Mammalian play: training for the unexpected. Q Rev Biol 76:141–168PubMedGoogle Scholar
  151. Sutton-Smith B (1980) Conclusion: the persuasive rhetorics of play. In: Pellegrini AD (ed) The future of play theory: a multidisciplinary inquiry into the contributions of Brian Sutton-Smith. State University of New York Press, Albany, pp 275–295Google Scholar
  152. Sutton-Smith B (2003) Play as a parody of emotional vulnerability. In: Lytle D (ed) Play and culture studies, vol 5. Praeger, Westport, pp 3–17Google Scholar
  153. Symons D (1978) Play and aggression. Columbia UP, NYGoogle Scholar
  154. Taylor M, Carlson SM (2002) Imaginary companions and elaborate fantasy in childhood: discontinuity with nonhuman animals. In: Mitchell RW (ed) Pretending and imagining in animals and children. Cambridge University Press, New York, pp 167–180Google Scholar
  155. Thompson KV (1996) Behavioral development and play. In: Kleiman D, Allen ME, Thompson KV, Lumpkin S (eds) Wild mammals in captivity: principles and techniques. University of Chicago Press, Chicago, pp 352–371Google Scholar
  156. van Hoof JARAM (1967) The facial displays of the catarrhine monkeys and apes. In: Morris D (ed) Primate ethology. Weidenfeld & Nicholson, London, pp 7–68Google Scholar
  157. van Hoof JARAM, Preuschoft S (2003) Laughter and smiling: the intertwining of nature and culture. In: de Waal FBM, Tyack P (eds) Animal social complexity. Harvard University Press, Cambridge, pp 153–179Google Scholar
  158. Vieira ML, Sartorio R (2002) Motivational, causal and functional analysis of play behavior in two rodent species. Estudos de Psicologia 7:189–196Google Scholar
  159. Weir R (1962) Language in the crib. Mouton, The HagueGoogle Scholar
  160. West M (1974) Social play in the domestic cat. Am Zool 14:427–436Google Scholar
  161. Wheeler R (1943) Pacific gull at play? Emu 42:181Google Scholar
  162. Wilson EO (1975) Sociobiology: the new synthesis. Harvard University Press, CambridgeGoogle Scholar
  163. Würsig B (2002) Playful behavior. In: Perrin WF, Wursig B, Thewissen JGM (eds) Encyclopedia of marine mammals. Academic, San Diego, pp 942–945Google Scholar
  164. Würsig B, Dorsey EM, Richardson WJ, Wells RS (1989) Feeding, aerial and play behaviour of the bowhead whale, Balaena mysticetus, summering in the Beaufort Sea. Aquat Mamm 15:27–37Google Scholar
  165. Young PT (1943) Emotion in man and animal: its nature and relation to attitude and motive. Wiley, New YorkGoogle Scholar
  166. Young PT (1961) Motivation and emotion: a survey of the determinants of human and animal activity. Wiley, New YorkGoogle Scholar

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© Springer Japan 2012

Authors and Affiliations

  1. 1.Department of PsychologyThe University of Southern MississippiHattiesburgUSA

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