Evidence map›Paper›PMID 32051656›Full record

ArticleJournal of psychopathology and behavioral assessment2019

Disentangling Reward Processing in Trichotillomania: 'Wanting' and 'Liking' Hair Pulling Have Distinct Clinical Correlates.

Ivar Snorrason, Emily J Ricketts, Ragnar P Olafsson, Michelle Rozenman, Christopher S Colwell, John Piacentini

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of psychopathology and behavioral assessment, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.1field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 14 citations in OpenAlex.

  1. Trichotillomania and Risk of Alcohol- and Drug-Related Problems.Biological psychiatry global open science · 2025
    Article
  2. Article
  3. Article
  4. Body Focused Repetitive Behavior Disorders: Behavioral Models and Neurobiological Mechanisms.Turk psikiyatri dergisi = Turkish journal of psychiatry · 2023
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Ivar SnorrasonDivision of Clinical Therapeutics, New York State Psychiatric Institute, New York, NY, USA.
Emily J RickettsDivision of Child and Adolescent Psychiatry, University of California, Los Angeles, Los Angeles, CA, USA.
Ragnar P OlafssonDepartment of Psychology, University of Iceland, Reykjavik, Iceland.
Michelle RozenmanDivision of Child and Adolescent Psychiatry, University of California, Los Angeles, Los Angeles, CA, USA.
Christopher S ColwellDivision of Child and Adolescent Psychiatry, University of California, Los Angeles, Los Angeles, CA, USA.
John PiacentiniDivision of Child and Adolescent Psychiatry, University of California, Los Angeles, Los Angeles, CA, USA.
University of California, Los Angeles · USNew York State Psychiatric InstituteUniversity of Iceland · IS

Funding

UCLA Clinical Translational Science InstituteUL1TR001881 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ARLEEN F. BROWN, ARASH NAEIM · 2016 to 2026
$118.1M
UCLA Clinical and Translational Science InstituteUL1TR000124 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$57.0M
TRAINING THE SCIENCE OF CHILD MENTAL HEALTH TREATMENTT32MH073517 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SUMA JACOB, John C. Piacentini · 2006 to 2026
$5.2M
Investigating Circadian Rhythms in Youth with Persistent Tic DisordersK23MH113884 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI RICKETTS, EMILY JULIA · 2017 to 2022
$992k
NCATS NIH HHS UL1 TR000124NCATS NIH HHS UL1 TR001881NIMH NIH HHS K23 MH113884NIMH NIH HHS T32 MH073517
6 · The paper itself

Abstract

Trichotillomania (TTM; hair-pulling disorder) is characterized by an irresistible urge or desire to pull out one's own hair, and a sense of pleasure when hair is pulled out. Evidence from translational neuroscience has shown that 'wanting' (motivation to seek a reward) and 'liking' (enjoyment when reward is received) are each mediated by overlapping but distinct neural circuitry, and that 'wanting' contributes to addictive/compulsive behaviors more so than 'liking'. In the present study, we developed the Hair Pulling Reward Scale (HPRS), a self-report measure that consists of two subscales designed to assess (a) cue-triggered urges and appetitive motivation to pull hair (i.e., putative correlates of 'wanting'), and (b) momentary pleasure and gratification during pulling episodes (i.e., putative correlates of 'liking'). We administered the HPRS to 259 individuals with TTM and examined its psychometric properties. Confirmatory factor analysis supported a two-factor model reflecting correlated Wanting and Liking scales. Consistent with predictions, Wanting, much more than Liking, had robust correlations with TTM severity, impulsiveness, difficulties in emotion regulation, psychiatric symptoms, and sleep dysfunction. The results suggest that the HPRS is a psychometrically sound instrument that can be used as a symptom-level measure of reward processing in TTM.

Indexed as

Hair pullingLikingPsychometricReward processingTrichotillomaniaWanting

Identifiers

PMID32051656
PMCPMC7015260
OpenAlexW2905354624

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.