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Keyword
Chimpanzees
1
Competition
1
Cooperation
1
Fetal
1
Fetal Behavior
1
Fetal Movement
1
Foreign Marks on the Body
1
Instrumental Learning
1
Law of Effect
1
Mark Test
1
Matching Law
1
Maternal
1
Operant Conditioning
1
Pan troglodytes
1
Prosocial behavior, reciprocity, inequity, Capuchin monkey
1
Rhesus Monkey
1
Salience
1