Epistemological and methodological differences which underlie empiricist v rationalist science are described. (Author/MP)

Argues that dual-task performance is currently not interpretable because several compatible hypotheses have been offered to account for dual-task interference. Demonstrates inability to discriminate among alternative hypotheses by constructing a model which includes limited resources and response competition and requires running at least eight…

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)

Studies the effect of eight prearranged situations on the prosocial, problem, and task-related behavior of three hyperactive boys. Behaviors assessed included adult, peer, and target-child attention given and received; compliance; aggression; disruption; task involvement; and percentage of tasks correctly completed. (Author/CI)

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…

The attention hypothesis of Zeaman and House is examined through a systematic, computer-simulation analysis of the parameter interactions found in One-Look model. (Author/SB)

A reply to a critique of Pascual-Leone's model of children's information processing capacity. (BD)

Presents a reply to and an analysis of a study which examined the use of logograph research to determine children's cognitive integration ability. The study in question had been based on the present author's previous research. (BD)

An error in the data analysis for a study reported in a 1988 paper by Kail is cited. The paper postulated a model that explained individual differences in the speed of processing on cognitive tasks. Reanalysis of the data suggested that support for the original conclusions is considerably weaker than reported. (LB)

Reports free and cued recall experiments in which a new model was used to obtain measurements of age changes in storage and retrieval. Participants were 7- and 11-year-olds. Findings concern (1) contributions of storage and retrieval to memory development; (2) effects of errors and successes on memorization; and (3) difficulty of storing and…