“…thibetana: Deng & Zhao, 1991;Cercopithecus aethiops: Struhsacker, 1971, Lee 1984Papio anubis: Nash, 1978;Papio cynocephalus: Altmann, 1980). Also the frequency with which the mother carries the infant has been observed to decrease as the infant grows (Nash, 1978;Almann, 1980;Hiraiwa, 1981;Karssermeijer et al, 1990), whereas the frequency of maternal restraint usually peaks between the third and the sixth week (Rosenblum & Kaufman, 1967;Rhine & Hendy-Neely, 1978;Berman, 1980;Kumar & Kurup, 1981;Johnson & Southwick, 1984;Simpson et al, 1986;Deng & Zhao, 1991). Overall, the results reported here confirm these observations.…”