STIMULUS DEFINITION IN CONDITIONAL DISCRIMINATIONS

摘要: With a customary arrangement of three horizontally aligned stimulus/response keys, two rhesus monkeys learned conditional hue and line discriminations--an "identity-matching" procedure. First, sample stimuli were presented on the center key, comparison side keys. Next, was allowed to appear any one with comparisons remaining two. The change from fixed variable locations caused horizontal vertical lines lose control over animals' responses; discrimination remained intact. Accurate description controlling in matching-to-sample procedure may therefore require that their spatial location be specified.