Philip G. Zimbardo on his career and the Stanford Prison Experiment's 40th anniversary

We interviewed Philip G. Zimbardo on April 19, 2011, in anticipation of the 40th anniversary of the Stanford Prison Experiment in August 2011. While Zimbardo's name is mentioned often in tandem with the experiment, he has distinguished himself in many other areas within psychology before and after the experiment, beginning with an accomplished early career at New York University in which he took interest in social psychology research on deindividuation. We discussed the Stanford Prison Experiment in the greater context of his varied and illustrious career, including recent pioneering work on heroism, the establishment of The Shyness Clinic at Stanford University, and the iconic Discovering Psychology series. We also addressed his adroit and candid approach to the experiment itself over the years.

Memory for frequency of bizarre and common stimuli: limitations of the automaticity hypothesis.

In 2 experiments, the influence of intention to process frequency on accuracy of memory for frequency of bizarre and common sentences was investigated. The results from multiple regression analyses indicated that intentional processing increased the accuracy of frequency judgments when memory for frequency was tested after a 2-min (Experiment 1) and after a 48-hr (Experiment 2) retention interval. Furthermore, the results of Experiment 2 indicated that unintentional processors tended to overestimate frequencies of bizarre relative to common items after a delay. The implications of the results are discussed with regard to L. Hasher and R. T. Zacks's (1984) automaticity hypothesis, human performance, and the accuracy of judgments of frequency of occurrence of unusual events.