Conditioning the Pupillary Reflex with Control for the Orienting Response

In an attempt to achieve conditioning of the pupillary reflex under conditions designed to limit the effects of the orienting response, data were obtained for 14 Ss who observed a series of lights of four colors. Each color light was presented 30 times for 7.5 sec. in random order. A mild electric shock was paired with one of the colors during the middle third of the experiment. Comparisons of pupil diameters during various stages of the study show a significant level of conditioning.