Worrying you might get hurt is worse than knowing you will, study finds. An experiment found that having a 50 percent chance of receiving a painful electric shock was actually more stressful than having a 100 percent chance of receiving one.

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Worrying you might get hurt is worse than knowing you will, study finds. An experiment found that having a 50 percent chance of receiving a painful electric shock was actually more stressful than having a 100 percent chance of receiving one.