Evolution of the Ainu language in space and time.

by Sean Lee, Toshikazu Hasegawa
Published 2013

Head rubbing and licking reinforce social bonds in a group of captive African lions, Panthera leo.

by Tomoyuki Matoba, Nobuyuki Kutsukake, Toshikazu Hasegawa
Published 2013

Familiarity bias and physiological responses in contagious yawning by dogs support link to empathy.

by Teresa Romero, Akitsugu Konno, Toshikazu Hasegawa
Published 2013

Testosterone promotes either dominance or submissiveness in the Ultimatum Game depending on players’ social rank

by Yukako Inoue, Taiki Takahashi, Robert P. Burriss, Sakura Arai, Toshikazu Hasegawa, Toshio Yamagishi, Toko Kiyonari
Published 2017