This paper provides a history of ETS's role in developing assessment instruments and psychometric procedures for measuring change in large-scale national assessments funded by the Longitudinal Studies branch of the National Center for Education Statistics. It documents the innovations developed during more than 30 years of working with…

Explores understanding of chance measurement and how this develops over time through the analysis of response data collected in 1993, 1995, and 1997. Analyzes this data to document changes in levels of observed student outcomes using the Structure of the Observed Learning Outcome (SOLO) developmental model. Results indicate no improvements in…

The first volume of the 29th annual conference of the International Group for the Psychology of Mathematics Education contains plenary lecture and research forum papers as listed below. Short oral communications papers, poster presentations, brief summaries of discussion groups, and working sessions are also included in the volume. The plenary…