The Additional Protocol is an excellent way for those who don't cheat to show their virtue.

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"In that case, modeling and mentoring is why people do or don't cheat, " Wolpe said.

CNN: Cheating arises from desires, incentives, pressures

Or they might give mixed signals, such as, "Get A's at all costs, " but "Don't cheat, " fostering the kind of stress that can lead to cheating.

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The troubles "cut to the heart of everything Indiana people like to think about themselves: Don't cheat and graduate kids, " said Fred Glass, Indiana's third-year athletic director.

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But spreadsheets don't cheat people.

BBC: The mysterious powers of Microsoft Excel

Pork butt doesn't take kindly to blasts of high heat, so don't think you can cheat by turning up the heat and reducing the cooking time.

WSJ: Mom-and-Pop Pulled Pork

He conducts simple experiments to show how people cheat, procrastinate, overvalue objects they made themselves, take free things they don't need, insist upon keeping their financial options open even when it means losing money and otherwise behave contrary to their interests.

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Habitual texters may not only cheat their existing relationships, they can also limit their ability to form future ones since they don't get to practice the art of interpreting nonverbal visual cues.

CNN: We never talk any more: The problem with text messaging