The Effect of Similarity on Psychophysiological Responsitivity to Pictorial and Verbal Stimuli

The present study is an attempt to relate stimulus similarity to psychophysiological responsivity. Tversky’s contrast model, which assumes that similarity judgements between stimuli are determined by their common and distinctive features, served as the guiding approach for the study. The main goal was to try to examine whether a systematic manipulation of the common and distinctive features among stimuli would effect the autonomic responsivity evoked by these stimuli.