"Yes, Mr. President we do have someone in here with a white shirt but we're working on it."
Based on an earlier theory developed by Edward E. Jones and Keith Davis, Jones and Harris hypothesized that people would attribute apparently freely-chosen behaviors to disposition, and apparently chance-directed behaviors to situation. The hypothesis was confounded by the fundamental attribution error.
Subjects read pro- and anti-Fidel Castro essays. Subjects were asked to rate the pro-Castro attitudes of the writers. When the subjects believed that the writers freely chose the positions they took (for or against Castro), they naturally rated the people who spoke in favor of Castro as having a more positive attitude toward Castro. However, contradicting Jones and Harris' initial hypothesis, when the subjects were told that the writer's positions were determined by a coin toss, they still rated writers who spoke in favor of Castro as having, on average, a more positive attitude towards Castro than those who spoke against him. In other words, the subjects were unable to see the influence of the situational constraints placed upon the writers; they could not refrain from attributing sincere belief to the writers.