Children with mild mental retardation were compared with CA-matched and verbal-age-matched children without mental retardation on a forward digit span task. Forward digit span is typically used as a measure of the phonological loop (Baddeley, 1986). We hypothesized that intelligence-related differences in forward digit span are largely due to central executive functioning rather than phonological loop functioning. Results showed that the highly significant group difference in forward digit span was reduced to nonsignificance when a measure of central executive functioning was covaried out.

No abstract

No abstract

In this article, we discuss procedures for coordinating the psychology human participant pool for research purposes. We describe our research retirement and the mechanics of how we recruit participants and report credit for research participation. We also provide an evaluation of the procedures from the viewpoints of experimenters, instructors, and students. Although we identify some problems, the procedures have worked well for us. We discuss areas needing improvement.

No abstract