In this research birth-order differences were studied in a sample of young children at three different ordinal positions. (Authors/CB)

Observed liberal-stringent model behavior significantly affected both the subject's subsequent self-reward behavior and performance. (Authors)

Findings are discussed in terms of traditional personality-trait theory and cognitive development theory. (Authors)

Results indicated that the children's behavior had an effect upon the parents, with mothers and fathers interacting more and being more controlling when the children were dependent. (Authors)

Younger men are both less engaged from the world and more efficient processors of information than older (especially less educated) ones. (Authors)

Used an event-based approach to study the nature of coordination in 3- and 6-month olds during interaction with their caregivers. Found that infants coordinated their vocalizations and facial actions more than expected by chance. When two communicative events were temporally associated across modalities, one event tended to be embedded within the…

Study suggests that an important social stimulus is the sex of the child's peers. Peer sex and changes in the sex composition of dyads affect the frequency of occurrence in several categories of social behavior. (Authors/CB)