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BrainHook Glossary

Rebound Effect

Trying to suppress unwanted thoughts often causes them to return more frequently and forcefully when suppression fails. This paradoxical outcome, called the rebound effect, shows how mental avoidance can strengthen the presence of avoided ideas.

Rebound Effect — BrainHook Glossary card

When individuals try to suppress unwanted thoughts, those thoughts often return more frequently and with greater intensity once suppression breaks down. This phenomenon, known as the rebound effect, highlights how mental efforts to avoid certain ideas can paradoxically strengthen their presence. It is commonly observed in psychological studies on thought suppression and explains why suppressing doubt or distress may lead to its resurgence.

What this means in real life

A teenager forbidden from using social media sneaks phone time obsessively; once the ban lifts, they use it even more heavily than before the restriction began.

What it isn’t

Not simply 'going back to normal' after stopping a behavior. The rebound effect specifically means returning *stronger* or *more intensely* than the baseline before restriction—not just resuming the original habit.

Commonly misused online

Often conflated with 'withdrawal' or 'addiction relapse,' but rebound effect applies broadly to any suppressed urge (thoughts, foods, activities), not just addictive substances.