Featured in Science Digest #163

Reduced trust in personal doubts weakens their impact on commitment to important goals. Digest

doi.org

When people struggle with major goals, such as finishing a degree or pursuing a career path, they often reach a moment of deep uncertainty about whether to continue. A new study asked whether the critical ingredient in these moments is not doubt itself, but the degree of trust people place in their doubts.

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The researchers ran two experiments, each focused on a personally important long-term goal. First, all participants completed a short questionnaire measuring how conflicted they felt about their goal, a state psychologists call an action crisis, meaning they were weighing whether to persist or give up. Next, the researchers introduced a brief task designed to influence how much participants trusted their own thoughts. In one experiment, adults recruited online wrote about a time when they had felt confident or doubtful in their thinking. In the other, college students completed the questionnaire using either their dominant or non-dominant hand, a method known to make people feel more or less certain about their answers. Here, participants were also asked how sure they felt about the answers they had just given, allowing the researchers to directly check that the task changed thought certainty. Finally, all participants rated how committed they felt to achieving their goal.

  • When a task was used to increase trust in participants' own thoughts, stronger goal-related doubt predicted lower commitment to the goal.
  • When a task was used to make participants less certain about their thoughts, doubts no longer predicted lower commitment.
  • This same pattern appeared in both experiments, even though different methods were used to influence thought certainty.
  • Writing with the non-dominant hand made participants feel much less sure about their answers, and when they felt less sure, doubts no longer predicted lower commitment to their goal.

The findings suggest that doubts do not automatically undermine commitment. Instead, their impact depends on whether people treat those doubts as signals they should rely on. When people strongly trust their doubts, commitment tends to drop. When they pause and question the validity of those doubts, the doubts lose their discouraging effect and may even coincide with renewed commitment.

The study relied on short experimental tasks and self-reported commitment, so it cannot determine how long these effects last or how they play out in real-life decisions. Still, the research suggests that during moments of uncertainty, learning to evaluate doubts rather than immediately accepting them may help people stay engaged with goals that matter and identify when a goal is unrealistic or even harmful to pursue. In this clip, Dr. Andrew Huberman discusses using negative visualization, discomfort, and cold exposure to overcome procrastination and boost motivation.