Troop of Kenyan baboons experiences temperament shift after all dominant adult males die in accident; Dr Robert M Sapolsky, Stanford University biology and neurology professor, and wife Dr Lisa J Share co-author research report on group known as Forest Troop; report is published in journal PloS Biology; holds that swing toward pacifism and affection between tribe members has carried over to new males entering group; contend that other examples of animal multiculturalism exist, but are more task specific than global code of behavior witnessed within Forest Troop; photos (M)
Source: No Time for Bullies: Baboons Retool Their Culture – The New York Times