There is increasing awareness that how young people spend their time outside of school has consequences for their development. As part of this awareness, interest in organized activities--extracurricular activities, after-school programs, and youth organizations--has grown markedly. On balance, the bulk of research on organized activities has…

Four studies established the reliability and validity of measures for assessing attitudes toward others and sex typing of self in occupations, activities, and traits. A fifth study provided longitudinal data from children tested 4 times from age 11 to 13 years. Data supported conceptual distinctions among individual's gender attitudes toward…

Identifies contributions of Liben and Bigler's studies to gender development related to measuring self and other sex typing, developing a theoretical account of the self-other relation, and incorporating individual differences. Raises questions about measures used and interpretations of the findings. Suggests issues for future research:…

Discusses two major contributions of Liben and Bigler's work: (1) introduction of new measures of sex typing; and (2) the proposal that there are two plausible ways in which gender attitudes and sex typing of self might be related. Considers the importance of context on gender salience for information processing. Asserts that Liben and Bigler's…

Responds to concerns that individual items included as stereotypes in the Occupation Activity Trait Scales (children's and adult's versions) are not highly stereotyped. Discusses future directions for research, noting that a developmental approach is critical to understanding gender differentiation establishment and that it is also important to…

Examined longitudinally the cognitive and adaptive behavior development of children with disabilities and their families' adaptation over time. Found that children's type of disability predicted trajectories in development of cognition and social and daily living skills. Type of disability also predicted changes in maternal (but not paternal)…

Describes as advances of the Hauser-Cram et al. study increasing basic information about children with disabilities and their families, showing a combined organismic-contextual developmental perspective, and operationalizing tenets of developmental psychopathology. Considers as limitations: the role of etiology, the need to reconceptualize…

Examined 2-year-olds' language acquisition with an emphasis on the agency and intentionality of the child. Concluded that development depends on the child's expression of intentionality by actions (performance), the essential tension between the child's engagement and effort, and the integration of linguistic, cognitive, and social aspects of the…

Examined recall by 14- to 32-month-olds for multistep event sequences experienced at 13 to 20 months. Found that within step-length groups, there were no age differences in the length of time over which memory was evidenced. With prompts by event-related props, age-related differences in memory appeared. Age-related effects were particularly…

Proposes an amended timetable for the origins of joint visual attention and offers theoretical alternatives for the development of point. Includes discussions of the origins of intentionality, the emergence of joint attention, the transition to pointing comprehension, the signal cues of different joint-attention cues, pointing comprehension, the…

Used Visual Expectation Paradigm to describe information processing changes and individual differences during first year of life. Found regular age changes in mean reaction time and variability but not in minimum reaction time, suggesting that growth rate of sensory-detection information is constant during first year but age changes occur in level…

Examines the meaning of reaction time (RT) and the possibility that it may predict other cognitive and motor skills in the first year of life. Considers two competing models that specify the information-processing components underlying RT performance. Describes the neural data needed to definitively choose between the models and considers…

Speculates on underlying processes for the reaction time variance and age differences in anticipation latency using the Visual Expectation Paradigm. Discusses the dichotomization of reactive and anticipatory behavior, limitations of longitudinal designs, drawbacks in using standard procedures and materials, and inferences that can be made…

Examined how infants acquire adaptive locomotion in the novel task of going up and down slopes. Found that infants' judgments became increasingly accurate and exploration became increasingly efficient, with no transfer over the transition from crawling to walking. Infants learned to gauge their abilities on-line as they encountered each hill at…

Discusses how Adolph's research is relevant to four themes that are foundational to contemporary research on the development of perception and action: (1) reciprocity between perception and action; (2) prospective control of behavior; (3) variation and selection in the development of new behaviors; and (4) contributions of age and experience.…