Hovland measured whether soldiers in training could answer a set of questions both before and after watching the films. To test changes in their opinions, Hovland asked Stauffer to compare attitudes of film watchers with themselves. They found that Capra's films did a fantastic job of teaching soldiers the facts. But when it came to their opinions, the answers they gave before watched the films remained nearly identical to those they gave after. In fact, most changes in opinion barely broke a percentage point of change.

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