The development of range of action in infant cynomolgus monkeys (Macaca fascicularis) reared by restrained mothers

Contains fulltext : 28782.pdf (publisher's version ) (Open Access)In order to study the effects of the mothers' range of action on the development of their infants' range of action during the first year of life, mother cynomolgus monkeys were restrained in their range of action by penning them in a separation cage within the large cage of the harem group they belonged to. The infants, however, could leave their mothers' separation cage. The control group consisted of infants growing up with unrestrained mothers in the same group. It appeared that infants of restrained mothers were initially retarded in the development of their range of action but at the end of the first year they did not differ anymore from infants of unrestrained mothers. It is concluded that the maternal range of action only temporarily affects the development of the infant's range of action