Chimps, bonobos appear to recognize ex-groupmates after decades apart
(Newser) -
Long-term memory goes back a long, long time: perhaps some 7 million years, according to new research on humans' closest living relatives. Researchers led by Laura Simone Lewis, a comparative psychologist at the University of California, Berkeley, showed 26 bonobos and chimpanzees side-by-side images of strangers and former groupmates, including...