Investigates a chimpanzee's capacity to recognize representations of problems and solutions, as well as its ability to perceive the relationship between each type of problem and its appropriate solutions using televised programs and photographic solutions. (HM)

Infant abuse and neglect were investigated in five families of group-living pigtail macaques over five generations. Neglect was mostly limited to first-born and newborns; closely related rather than distantly related females were more prone to abuse; and infants with siblings previously abused were at highest risk. Results provide evidence of…

A study of the effect of the twin sibling relationship upon interactions between monkey mothers and infants. Findings provided strong support for the prediction that the twin sibling presence decreases the amount of behavior directed from infant to mother. Differences in maternal behavior were concluded to be reactions to differences in infant…

Describes exercises designed to give students experience in using methods of naturalistic observation to quantify behavior. Students construct a coding system of the behaviors observed in a small mouse colony, gather data by instantaneous and focal animal sampling, and use the data to calculate interrater reliability and sequence analysis. (GEA)

Despite the seminal studies of response differentiation by the method of successive approximation detailed in chapter 8 of "The Behavior of Organisms" (1938), B. F. Skinner never actually shaped an operant response by hand until a memorable incident of startling serendipity on the top floor of a flour mill in Minneapolis in 1943. That occasion…

This book, the first in a series on development and behavior of human infants and animals, contains a collection of articles dealing with the significance of the interaction between mother and infant and the subtle contributions that each makes to the other in shaping their ongoing dyadic behavior. It emphasizes that the infant is no mere passive…