Amid recent progress in cognitive development research, high-quality data resources are accumulating, and data sharing and secondary data analysis are becoming increasingly valuable tools. Integrative data analysis (IDA) is an exciting analytical framework that can enhance secondary data analysis in powerful ways. IDA pools item-level data across…

Abstract Preschoolers' cognitive abilities were assessed each year as part of the Head Start Program requirements. The Head Start PK-4 Center evaluated preschoolers' cognition by administering the Learning Accomplishment Profile-Diagnostic (LAP-D), as a pretest and posttest measure. The LAP-D study used archival data collected from the 2009-2010…

In light of rapid demographic shifts and legal challenges to affirmative action in the United States, the issue of diversity on college campuses is of increasing importance. Most syntheses of research on diversity interactions and educational outcomes have focused on attitude change, such as reductions in prejudice or racial bias. Despite the…

A procedure for evaluating the Genevan stage learning hypothesis is illustrated by analyzing Inhelder, Sinclair, and Bovet's guided learning experiments (in "Learning and the Development of Cognition." Cambridge: Harvard University Press, 1974). (Author/MP)

Age-related changes in representational flexibility are a characteristic feature of declarative memory development. The authors suggest that a qualitative shift in the nature of infants' memory representations accounts for increasing memory flexibility with age. We will argue that a comprehensive theory of declarative memory development must (1)…

According to the stage-learning hypothesis, children's ability to learn is constrained by their pretraining stages of cognitive development. Some procedures for obtaining unconfounded tests of this hypothesis are developed in this paper, and some applications to factorial experiments are considered. (Author/BW)

This response to Brainerd and Reyna's paper (in this issue) argues that the common resources hypothesis can be applied to a wider range of phenomena than can the output-interference hypothesis. Presents results of a dual-task experiment under bidirectional deficits. Concludes that dual-task studies do not provide critical tests of the resources…

Six studies are summarized in which repeatable methods were tested in quasi-experimental settings to test hypotheses relating to a cognitive approach to counseling. In each study, a repeatable mode of counseling was developed, research counselors were trained to a high level of competence, their performance was validated by tape recordings,…

This research compares the effectiveness in fostering the development of concept formation skills, of exposure for periods ranging from three to six years to two different methods of teaching mathematics to primary school children, one method (Z. P. Dienes) of the general "discovery" type, the other (H. Fletcher) of the…

Results of this experiment provide support for the findings by Piaget & Inhelder (1973) that children's memory drawings of a seriated display improve over time as their cognitive abilities develop. (Author)

The degree of relationship among measures of learning proficiency, cognitive development (following Piaget), school achievement in reading, mathematics, and spelling, and IQ among 79 low socioeconomic status black males attending the seventh grade in an inner-city school was examined. (Editor)

Surveys 30 studies involving 104 separate tests of the "similar structure hypothesis" which holds that, when nonorganically impaired retarded and nonretarded persons are similar in developmental level, they are also similar in the processes and concepts by which they reason. (Researchers distinguished between studies that excluded…

Following an analysis of work in the area of relationships between concept development and social development, a preliminary research project carried out to examine these relationships is discussed. Piaget's "The Language and Thought of the Child" served as a springboard for the past and present investigations. In the experiment…

Developmental changes in the understanding and use of the logic of experimental control were addressed with three tasks in a longitudinal study. In all three tasks, understanding of experimental control was assessed by production measures (children were asked to test potential causal relations in a multivariable situation) and by choice/evaluation…