8: Imitation

The researcher sits down in front of the chimpanzee Alexandra with a child's toy. She pokes the stick into the hole and this makes a sound, repeating her actions a few times so that the chimp has definitely seen her behaviour.

Now it's the chimpanzee's turn...

continue >

Dr. Malinda Carpenter, Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.