Examined consistency of hand preference in a longitudinal study of children between 18 and 42 months of age. Results showed a sex-specific relationship between hand consistence and intellectual development. Females with consistency of handedness were precocious compared to females without such consistency; the same relationship did not hold for…

Discusses research on mechanisms that determine the temporal properties of the retrieval of information, represented in long-term memory as a network of associations among concepts. A theory is developed concerned with processes leading from presentation of a probe to levels of activation in the network. (JN)

Discussed are some of the strategies required to try to detect and explain DNA markers that account for small amounts of behavioral variation. Situations in both animal and human behavior are described. The link between molecular biology and behavior is highlighted. (CW)