Our target article (Robinson-Cimpian, Lubienski, Ganley, & Copur-Gencturk, 2014) used nationally representative data to examine the development of gender gaps in math achievement. We found that when boys and girls demonstrate equivalent math test performance and are perceived by their teachers to be equally well behaved and engaged with the…

Developmental science rests on describing, explaining, and optimizing intraindividual changes and, hence, empirically requires longitudinal research. Problems of missing data arise in most longitudinal studies, thus creating challenges for interpreting the substance and structure of intraindividual change. Using a sample of reports of longitudinal…

To reduce confusion and controversy about the nature of self-care and its consequences for children, this commentary defines the self-care child as one between the ages of approximately six and 13 years who spends time at home alone or with a younger sibling on a periodic basis. (RH)

Advances arguments against defining self-care children exclusively in terms of elementary school students who are home alone or with a younger sibling after school. (RH)

Responds to Gordon's critique (in this issue) of Bohannon and Stanowicz (1988) by pointing out relevant and irrelevant aspects of discussions of learnability. Rates of feedback found in Bohannon and Stanowicz are shown to be sufficient to spur learning in many species. Evidence against the universality of negative evidence is discounted. (RH)

Offers an explanation of why Cohn and Tronick's (1988) result replicates that of Kaye and Fogel (1980) in spite of important differences in the way interactive behavior is conceptualized, coded, and treated statistically. Suggests that stochastic variability in onset times has profound implications for the understanding of interaction process and…

To avoid reduction in observational data resulting from correlational techniques for analyzing interpersonal interactions, a data-transformation method based on multidimensional scaling techniques was applied to the Family Interaction Coding System. Two resulting dimensions, prosocial-deviance and high-low involvement, were applied to observations…

Critiques Bohannon and Stanowicz's (1988) conclusion that natural languages can be learned and that there is no need to postulate innate knowledge. Argues that Bohannon and Stanowicz's results disclose nothing about learnability or innateness. (RH)

Maintains author's interpretation of 6-month-olds' behavior is consistent with task requirements in the 2000 study and previous work showing that infants use explanatory inferences to make sense of their world. Asserts that ability to understand that people communicate with persons but act on objects is precursor to infants' understanding at 9 to…

Argues that more attention should be given to the specification of the independent and dependent variables which describe, explain and predict intraindividual stability and change over time. Statistical techniques for such study are briefly discussed. (Author/SDH)

A total of 64 preschool children were assigned to one of three conditions--fantasy play, play, or imitation--with common objects, or to an alternative-materials group. Subjects were tested for associative fluency for familiar and novel objects, both immediately and after a delay of one week. No significant main effects for condition were found.…

Responds to Fogel's (1988) concerns about the validity and preferred uses of scaled monadic phases and introduces a note of caution about prematurely concluding that stochastic organization alone is of significance to development. (RH)

Examined effects of early parental employment on children, using data from National Longitudinal Survey of Youth. Found that more work hours were associated with slightly lower cognitive development through age 9 and lower academic achievement before age 7, but not with behavior problems, compliance, or self-esteem. Early parental employment was…

Suggests that the model by Parke, MacDonald, Beitel, and Bhavnagri (1988) of ways that parents influence children's social development might be used to organize the study of abnormal development in children of depressed mothers. Components of a theoretical model of developmental psychopathology are outlined. (RH)