Restraint Bias
🇳🇴Selvkontroll-skjevhetDefinition
Restraint bias is the tendency to overestimate our own ability to resist temptation, impulse, and craving. We believe we can control ourselves in situations we're not currently in – and underestimate how much the temptation will pull on us once we're actually there.
Real-world example
Loran Nordgren and colleagues (2009) demonstrated this convincingly. Heavy smokers who had recently completed a quit program and rated their self-control as high chose to test themselves with more temptation (e.g. attending parties with smokers). Four months later more of them had relapsed than the more cautious group.
The pattern repeats for dieting, alcohol, gambling, phone use, infidelity, and impulse shopping. 'I'll just have one' or 'I'll just take a look' almost always stems from restraint bias – a systematic misjudgment of how strong the *present-tense* temptation will feel when we're standing in it.
Supplementary perspective
The effect is a form of empathy gap: we can't simulate emotional states we're not currently in. Out of hunger we judge what we'll eat; out of desire we judge what we'll do. The solution is rarely more willpower, but structuring the environment so temptation never meets us.
Practical advice
Recognize
- —Notice if you're planning 'just a little' of something you're trying to reduce.
- —Be extra skeptical when far from temptation and judging your own strength.
- —Check the pattern: have you failed on this same premise before?
Counteract
- —Remove temptations from the environment instead of relying on willpower.
- —Set commitments in advance (Ulysses contracts): block apps, empty the cupboard, leave the card at home.
- —Assume 'future you' is weaker than you imagine.
Ethical use
- —In addiction treatment: focus on environment, not just motivation.
- —In product design: don't exploit users overestimating their self-control (social media, gambling).
- —In personal finance: automate saving before the money is accessible.