The taxometric method is an increasingly popular statistical approach that tests whether the structure of a latent construct is categorical or continuous. This article presents the key conceptual and methodological issues that should be addressed in an informative taxometric investigation. We aim to help potential users of taxometrics determine:…

Each year, millions of state and federal education funds are spent on career development interventions for America's teenagers. However, no uniform nomenclature, definition, and organization of these interventions exists in the professional literature. This hampers communication among and between practitioners, policymakers, and researchers. The…

To generate a useful means of analyzing think-aloud protocols of individual students, and to determine the extent to which practical information might be derived from transcripts and videotapes, this project focused on the problem-solving behaviors of 17 sixth-grade students videotaped while solving routine textbook word problems. Using a…

Data collection procedures for the Beginning Teacher Evaluation Study are described. The instructional time phase of this study investigated the amount of time the teacher spent teaching particular objectives in reading and mathematics, and its relationship to student achievement. Two types of data were gathered from the second and fifth grade…