- Liad Uziel, Bar-Ilan Univ., Israel
Four studies (N = 635) explored the effect of desire for self-control on the ability to exert self-control. Study 1 showed that a strong desire impaired performance on a demanding task but not on a simple task. Study 2 replicated the effect and established causality by experimentally manipulating the desire. Studies 3-4 found that efficacy beliefs mediate the effect.