A model was proposed as an alternative to current models for categorical perception, which refers to the apparent responding to stimuli only in absolute terms. The model proposed that a single (common) factor causes both a peak in the discrimination function and a categorical dichotomy and thus the correlation between the two. (Editor/RK)

Names of cities were shock associated and then embedded in material presented to the nonattended channel in a dichotic listening and shadowing situation. A test for conditioning followed the dichotic listening task. Comparisons are made with other studies of galvanic skin responses to unattended words. (Editor/RK)