Implicit theories about willpower predict the activation of a rest goal following self-control exertion.
Level 2 - randomized trial
Series of experimental laboratory studies involving randomized manipulations and correlational designs.
PubMed 26075793 · doi:10.1037/pspp0000042
What was done
Across five experimental and correlational studies, the authors investigated whether exerting self-control activates a goal to preserve and replenish mental resources (a rest goal) among individuals who view willpower as limited. Study 1 evaluated rest goal accessibility. Studies 2 (measured theories) and 3 (experimentally manipulated theories) assessed preferences for rest-conducive objects. Studies 4 (measured) and 5 (manipulated) measured resting behavior, specifically break duration and chair-sitting time during a product-testing task following self-control exertion.
What was found
The abstract reports no numerical data, effect sizes, or test statistics. It reports that holding or inducing a limited-resource theory of willpower predicted greater accessibility of a rest goal (Study 1), higher preference for rest-conducive objects (Studies 2 and 3), and longer resting times/sitting durations following self-control tasks (Studies 4 and 5). Study 4 also reported that longer resting time predicted decreased rest goal accessibility afterward.
Why it matters
The findings offer a motivational explanation for ego-depletion effects, suggesting that reduced self-control after exertion is driven by an activated goal to rest in people who believe mental resources are finite.
Limits
No sample sizes, demographic characteristics, effect sizes, or p-values are reported in the abstract. The reliance on laboratory proxy measures (such as object preference and chair-sitting duration) limits generalizability to real-world self-regulation. Broader replication controversies surrounding ego-depletion paradigms also apply.