Research Seminar

Modeling short-term memory capacity across grades in elementary school using the forward digit span task


Rianne Janssen


KU Leuven

Abstract: Individual differences in short-term memory (STM) capacity are an important variable in several areas of psychology and education. In the present talk, we focus on the nature of these individual differences. Most commonly, a categorical view on STM capacity is taken, which seems to be based on the bin metaphor behind Miller’s famous description of STM capacity by the magical number 7 ± 2. Also, many current assessment procedures of STM use stopping and scoring rules that are in line with such a categorical view. In this talk, an item response model is derived from a categorical view on STM capacity. It is based on the ordinal latent class model with restrictions on the latent class probabilities for the items. The model is estimated on 498 pupils of primary education from grades 2 through 6 who took a 30-item forward digit span task.

Date: Tue Oct 27, 12:15 pm - 1:15 pm
Place: room 02.51 (Department of Psychology, Tiensestraat 102, 3000 Leuven)