Evolution of Mind: The representational capacities of gibbons (H. syndactylus) and the common ancestor of humans and apes. (2005-2007)
Abstract
This research is the first systematic investigation into the mental capacity of gibbons. We will test siamangs on whether they can reason about objects that are no longer visible recognize themselves in mirrors solve problems through insight understand that one thing can represent another imitate and recognize being imitated by others. These tests draw on the capacity to mentally entertain multiple models of the world a capacity that becomes evident in humans by age two. Knowing whether or not apes share this skill tells us how ancient it is and informs reconstruction of the evolution of the human mind
