ANTHRO 128A Lecture Notes - Lecture 8: Dependent And Independent Variables, Reciprocal Altruism
Document Summary
Kind of cognitive mechanisms related to communication, intelligence, social behavior do primates possess. How do primates respond to ecologically relevant signals. What is the adaptive value of these responses. Using speakers to play the calls to primates. Use calls from same group since they recognize indivs in their own group. Measure effects of independent variables on dependent/outcome variables. Independent variables can be manipulated (playing diff types of recorded stimuli) Hyp: hearing postconflict grunt reduces listener"s anxiety of being attacked. Soon after b and c fought, b grunted to c. Soon after b and c fought but b did not grunt to c. After 45 mins in which b and c did not interact at all (control) Dep variable: percentage of looking time (indicating threat) Produce vocalizations that recruit indivs in an alliance against an opponent. Theory: monkeys that groom will have stronger social bonds. Those that groom each other more area likely to form coalitions.
