Self-control has long been regarded as one of the strongest predictors of success. Most of us can picture that colleague who never misses a deadline, volunteers for extra projects and keeps everything running smoothly.

Research shows individuals who can resist short-term temptations in pursuit of long-term goals tend to fare better across nearly every aspect of life.

As a researcher who has spent years studying workplace dynamics, I set out to examine what happens to these highly disciplined individuals. What I found was surprising: the very trait that makes them valuable — their high levels of self-control — can also come with hidden costs.

Self-control as a social signal

My colleagues and I conducted six studies examining how people treat others based on their perceived self-control. We defined perceived self-control as a person’s beliefs about someone else’s level of self-control, such as resisting temptations, staying focused and persisting in the pursuit of goals.

Across our studies, self-control functioned as a powerful social signal.

In one study, participants read about a student who either resisted the temptation to purchase music online (demonstrating self-control) or gave in to it, then imagined working with this student on a group project. Participants expected substantially higher performance from the student who had demonstrated self-control, even though resisting an impulse to buy music had nothing to do with academic........

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