Affective and sensory correlates of hair pulling in pediatric trichotillomania.
Hair pulling starts painful but turns pleasant, so assess current sensory payoff before picking treatment.
01Research in Context
What this study did
The team asked kids with trichotillomania how pulling feels. They used a short survey and a smiley-face scale.
Each child answered twice: about the very first time they ever pulled, and about their most recent pull.
What they found
First pulls hurt and felt good at the same time. Recent pulls only felt good.
Over time the pain fades but the pleasure stays. That shift keeps the behavior alive.
How this fits with other research
Sievers et al. (2020) later showed that a 10-session ACT plan cut pulling in teens and adults. Their work builds on the 2009 finding that pleasure drives the habit.
Moritz et al. (2021) tested self-help tricks like HRT. Their adult data line up with the 2009 idea that once pulling feels good, it is tough to stop without a plan.
Porter et al. (2008) used a quick functional check to beat nail biting. Like the 2009 paper, they mapped what keeps the habit alive before choosing treatment.
Why it matters
If you treat a child who pulls hair, do not assume the behavior still hurts. Ask what it feels like now. If it feels nice, add a reward-based plan such as ACT modules or competing-response training. Update your plan as the sensory payoff changes.
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02At a glance
03Original abstract
Hair pulling in pediatric populations has not received adequate empirical study. Investigations of the affective and sensory states contributing to the etiology and maintenance of hair pulling may help to elucidate the classification of trichotillomania (TTM) as an impulse control disorder or obsessive-compulsive spectrum disorder. The current study aimed to examine children's self-reported affective and sensory states associated with hair pulling. Fifteen participants completed a questionnaire assessing children's experiences during first and recent hair pulling episodes. Results revealed that pulling hair for the first time was associated with pleasure and pain whereas recent hair pulling was associated with pleasure only, suggesting that the punishing quality of hair pulling may diminish over time. The findings also support the notion that hair pulling may be maintained primarily through positive reinforcement, which is consistent with its classification as an impulse control disorder.
Behavior modification, 2009 · doi:10.1177/0145445508326260