Pupillary Size as an Index of Preference

Abstract

5 Ss were shown groups of semi-erotic, neutral, and aversive photographs and ranked them on a pleasant-unpleasant continuum. When compared to the pupillary ranks, significant agreement between the two ranks was noted. The absolute pupillary size was also positively correlated with absolute subjective scores given to photographs which were viewed on the pleasant-unpleasant continuum.