DELAYED MATCHING-TO-SAMPLE AND SHORT-TERM MEMORY IN CAPUCHIN MONKEY

A delayed matching-to-sample (DMTS) paradigm, employing a visual task in which 3 male capuchin monkeys could not fall back on mediating behaviors of a positional or orientational nature, was used to investigate interference phenomena in short-term memory (STM). Sample-set size was varied orthogonally with delay interval. No evidence for STM interference effects was found. Based on a long-term increase in base-line behavior and an apparent discriminability effect upon DMTS performance, a modified decay interpretation of the data was suggested. (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1969 American Psychological Association.