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