Toshikazu Hasegawa

TL;DR: The chimpanzees of the Mahale Mountains National Park, Tanzania, have been studied for more than 34 yr on the basis of individual identification and standardized attendance records to derive demographic data on disease, death, and female transfer.

TL;DR: For example, this article found that the evolutionary hypothesis, but not the belief hypothesis, accounted for sex differences in jealousy when the types of infidelity are rendered mutually exclusive, and significant variance attributable to sex, after controlling for beliefs; sex-differentiated patterns of beliefs; and the cross-cultural prevalence of all these sex differences.

TL;DR: This article investigated whether the direct gaze of others influences attentional disengagement from faces in an experimental situation and found that the response delay to direct gaze was delayed when the preceding face was directly gazing at the subject (direct gaze), as compared with an averted gaze (averted gaze) or with closed eyes (closed eyes).

TL;DR: It is indicated that eye gaze attracted attention more effectively than the arrow in typically developed children, while children with autism shifted their attention equally in response to eye gaze and arrow direction, failing to show preferential sensitivity to the social cue.

TL;DR: Wrangham et al. as mentioned in this paper showed that the number of adult males in the unit-group was the main factor influencing the immigration of strange, cycling females and the emigration of cycling females.