Findings indicated that among children between 15 and 35 months observed in a series of play and clean-up tasks, there was a consistent developmental pattern in the extent to which they focused on producing outcomes, and monitored, corrected, and controlled activities, and in the frequency with which they reacted to their outcomes with positive…

Multimethod assessments of temperament were obtained from 89 twins at 18 and 24 months of age. Ratings of subject reaction to restraint and parent ratings of temperament plus coordination of these temperament dimensions with analogous dimensions obtained at 12 months provided evidence of stability of temperament across six-month intervals during…

Discusses strategy-like behaviors in a memory-for-location task found in four studies of 18- to 24-month-old children. Interprets results as evidence of an early natural propensity to keep alive what must be remembered, a rudimentary version of what will later become more elaborate mnemonic strategies. (Author/CB)

Investigates the nature of and changes in early memory demands and assesses the relationship between memory demands and memory performance among 10 children 30 and 42 months old and their mothers. Results suggested that mothers' memory demands have an impact on children's memory performance--providing at least partial support for Vygotsky's…

Delay/response inhibition in the presence of an attractive stimulus and compliance with maternal directives in a clean-up task were observed among subjects 18, 24, and 30 months of age. Results suggested (1) achievement of self-control is a major developmental accomplishment, and (2) individual differences in self-control emerge and are…

Examines extent to which knowing that certain things go together and knowing how they do are independent aspects of developing cognitive systems. Indicates that children use temporal order as organizing principle by three years of age. Suggests an earlier developmental horizon as the origin of ordering abilities. (Author/BE)

Significant relationships were found between linguistic maturity of children, speech of parents, and children's helping behavior. Mean length of utterance was a better predictor of cooperative behavior than child age; no comparable relationships were found for parents' nonverbal behaviors. Results support a hypothesis of verbal mediation of…

Quantitatively describes the gait development of a group of African children to determine how pattern changes would relate to growth and maturation. A total of 65 children from the Gusii tribe of southwestern Kenya, ranging in age from 13 to 69 months, were selected for study. (Author/RH)

Studies social play and social and solitary pretend play in well-acquainted toddlers aged 14-38 months in order to describe a sequence of progressively more complex social pretend play forms. Results indicate that social pretend play forms emerge later than comparable solitary pretend and social play forms. (RJC)

Two strategies that children use to figure out new word meanings--attention to linguistic form class and the assumption of lexical contrast--were examined. It was found that very young children use both form class and lexical contrast to interpret new words. (PCB)

Strategies young children used to correct errors in nesting seriated cups changed substantially with age, becoming increasingly more flexible and involving more extensive restructuring of the relationships among the cups. The same trend toward increasing flexibility of thought and action also appeared in procedures children used to combine the…

Children's ability to produce integrated sequences of discrete behaviors was examined as a function of age and task demands for several behavioral domains. Results are discussed in terms of possible age-related constraints on combinatorial skills that operate at a general, cross-domain level during toddlerhood. (RH)

Examines 2,000 Strange Situation classifications obtained in eight different countries. Differences and similarities between distributions in classifications of samples are investigated using correspondence analysis. Substantial intracultural differences are established; data also suggest a pattern of cross-cultural differences. (Author/RWB)

Social interactions regarding moral and conventional transgressions were observed among two toddler groups. Each of 16 day care center classrooms, eight serving 13- to 27-month-olds and eight serving 18- to 40-month-olds, was observed for three 45-minute sessions. Implications of results concerned the developmental origins of distinctions between…

Social play emerged earlier than social pretend play with a similar structure; the incidence of social pretend play increased with age. Four strategies for integrating pretense into social play were isolated; among them, verbal recruitment and "join" were found to be more effective than imitation or nonverbal recruitment. (Author/RH)