Kanzi's Pretense Discovery
Study published in Science shows first animal pretense evidence.
Kanzi correctly identified cups 34/50 and pointed to juice 14/18.
Tests adapted childhood development tests into a tea-party task.
Researchers address skepticism about anecdotal ape observations.
Kanzi's lexigram training may limit findings to other apes.
Debate focuses on social cognition as a human differentiator.
3 weeks ago