Discusses analysis of covariance (ANCOVA), a standard tool for data analysis in psychological research. Considers the two major ways in which psychologists have used the technique: for increasing the precision of estimation in randomized experiments and for seeking to remove bias in nonrandomized studies, comparing ANCOVA with analytic…

Describes the provenance of the data used in this issue. Includes design of the instructional sequence, instructional activities, classroom structure, and classroom episodes. (Author/MM)

This publication provides a complete census and analysis of the foreign postsecondary student population studying in the United States. The report consists of five chapters. The first chapter compares "Open Doors" (a statistical compilation on foreign students) and this publication, pointing out the unique contributions of each publication as well…