Design and results of an investigation attempting to analyze and improve children's solution processes in elementary addition and subtraction problems are described. As background for the study, a conceptual model was developed based on previous research. One dimension of the model relates to the characteristics of the tasks (numerical versus word…

Instructional research is synthesized, using categories specific and functional enough to provide guidance for classroom practice. The opening chapter presents a theory for conducting a theory-based meta-analysis of the research on instruction, outlining a theory that involves four elements of human information processing: the self-system, the…

The "primacy of reading" hypothesis as the explanation for the high correlation between children's competencies in literacy and numeracy is rejected in this paper. Instead, a "primacy of speech perception" hypothesis is examined. It is suggested that analysis-by-synthesis speech recognition procedures are acquired in early childhood and that the…

This report describes the growth in cognitive skills and achievement, and the continuities and discontinuities experienced in school and at home by the eighth-grade cohort of the National Education Longitudinal Study of 1988 (NELS:88) during the 2 years between the study's base year (1988) and the first-followup (1990) surveys. The report examines…