A Japanese study of a chimpanzee mother caring for her disabled infant in the wild has shed light on how humans developed their social behavior.
The first-of-its-kind study by a team of Kyoto University researchers was published Monday in the online edition of Primates, an international journal of primatology.
Born in January 2011 in a chimpanzee group in Tanzania¡¯s Mahale Mountains National Park, the female infant was ¡°severely disabled,¡± exhibiting ¡°symptoms resembling Down syndrome,¡± according to a summary of the team¡¯s findings.
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