There’s a classic study, conducted by Charlan Nemeth and Cynthia Chiles, demonstrating that one act of courage supports another. Let’s say you are a participant in the study. You are matched with three other people, and a researcher shows your group a series of 20 slides. After each one is presented, the researcher pauses to ask each of you what color the slide is. It’s an easy task: All the slides are blue, and all four of you say “blue” all 20 times you’re asked. Then, that group breaks up and you are put into a new group of four. Same task. This time, though, the first slide is red. Oddly,
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