These proceedings are a written record of the research presented at the 42nd annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (PME-NA) held in Mazatlán, Mexico, virtually beginning May 27, 2021 and in-person June 2-6, 2021. The conference was originally scheduled to take place…

People forget what they do not use. But attitudes "stick." Our article emphasizes the importance of students' attitudes toward statistics. We examine 15 surveys that purport to assess these attitudes and then describe the "Survey of Attitudes Toward Statistics," a commonly used attitude survey. We present our conceptual model…

The Rasch model for the probability of a person's response to an item is extended to the case where this response depends on a set of scoring or category weights, in addition to person and item parameters. The maximum likelihood approach introduced by Wright for the dichotomous case is applicable here also, and it is shown to yield a unique…

Georg Rasch has developed a new one-parameter latent trait model to explain the performance of examinees on achievement tests. The model can be viewed as a special case of Birnbaum's two-parameter logistic model where all items are assumed to have equal discriminating power. Birnbaum's model permits items to vary in discriminating power. Both…

Discussed is a study which measured the importance of considering differing student abilities to deal with cognitive ability task factors when developing research methodology and statistics courses in psychology. Topics discussed are data on which the study was based, testing procedure, testing instrument, results, and major findings. (Author/DB)

The effect of attitudes toward mathematics-related coursework, previous mathematics coursework, student sex, spatial ability, and masculinity-femininity of interest pattern on statistics achievement were studied in 188 graduate students. Sex-related differences were found in mathematics attitude, spatial visualization, and achievement in the…

This document examines the work of Daniel Starch, emphasizing his work in educational psychology and advertising. After earning his doctorate in psychology (1906), Starch attempted to apply the findings of the new science to education and to advertising. This application met with much success. In advertising, he devised new sampling techniques and…