Sign Tracking

Sign tracking is displayed when an organism approaches a stimulus that signals the presentation of an appetite event. In 1941, Pavlov reported that during a classical conditioning experiment one of his dogs approached and licked the light that signaled when food was going to be delivered. Not much attention was paid to this occurrence until recently. Sign tracking is referred to as an instance in which classical and operant conditioning overlap. In this video, raccoons in a study with placing poker chips in slots exhibit sign tracking.