Assertion: ape's behavior | /r/HasProperty | early precursor
Facets:
value: in humans
type: OTHER
value: to negative head-shaking gestures
type: OTHER
Source sentences:
text: While the researchers aren't sure whether the bonobos really mean "no" in their head shakes, the results do hint the behavior may be an early precursor to negative head-shaking gestures in humans, according to study researcher Christel Schneider of the Max Planck Institute for Evolutionary Anthropology in Leipzig.