Investigates preschoolers' knowledge of counting principles by examining their ability to discriminate between features essential for correct counting and features typically present but unessential. Skill in executing the standard counting procedure was found to precede knowledge of the underlying principle. (Author/AS)

Adopts a longitudinal design to track mother-child developmental change in infant task-related mastery and concomitant maternal behavior. Finds that, as infants gain more mastery across time, mothers gradually withdraw support in terms of concrete, specific and nonverbal means of instruction. Results support a one-step-ahead model for maternal…

This study explores the effects of cooperative and mastery learning methods, alone and in combination, on first and second grade students' learning and retention of basic economic facts. A 2 X 2 (cooperative X mastery) factorial design compared the achievement of 120 students randomly assigned by grade level stratification to one of four treatment…

This paper discusses the results of research on learning LOGO programming language by two groups of fifth grade students who were taught using either a structured tutorial mode or an unstructured discovery method. Previous results showed mastery differences between the structured and unstructured teaching methods with the results favoring the…

This book contains a snapshot of state-of-the-art research on the design of automated instructional systems. Selected cognitive psychologists were asked to describe their approach to instruction and cognitive diagnosis, the theoretical basis of the approach, its utility and applicability, and the knowledge engineering or task analysis methods…