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Related Experiment Video

Updated: Feb 7, 2026

Assessing Burrowing, Nest Construction, and Hoarding in Mice
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Scrupulosity and hoarding.

Randy O Frost1, Isabella Gabrielson1, Sophia Deady1

  • 1Department of Psychology, Smith College, Northampton, MA, USA.

Comprehensive Psychiatry
|July 25, 2018
PubMed
Summary
This summary is machine-generated.

Avoiding waste is a key motive in hoarding disorder, linked to scrupulosity-like beliefs. A new measure, the Material Scrupulosity Scale (MOMS), shows reliability and validity in assessing these hoarding-related beliefs.

Keywords:
HoardingHoarding disorderScrupulosity

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Area of Science:

  • Psychiatry
  • Psychology
  • Behavioral Science

Background:

  • Hoarding disorder is often linked to a strong desire to avoid waste.
  • These beliefs resemble scrupulosity obsessions seen in Obsessive-Compulsive Disorder (OCD).

Purpose of the Study:

  • To investigate scrupulosity-like beliefs in hoarding disorder.
  • To develop and validate a measure for material scrupulosity.

Main Methods:

  • Three studies were conducted to assess the reliability and validity of the Material Scrupulosity Scale (MOMS).
  • Samples included college students, individuals with hoarding problems, and a large nonclinical/community sample.

Main Results:

  • The MOMS demonstrated good reliability and validity across all samples.
  • Material scrupulosity strongly correlated with hoarding symptoms, particularly difficulty discarding and responsibility beliefs.
  • The MOMS predicted hoarding symptoms independently of other hoarding-related beliefs.

Conclusions:

  • Material Scrupulosity, an exaggerated sense of responsibility for possessions to prevent waste, is distinct from other hoarding beliefs.
  • The MOMS is a reliable and valid measure for assessing material scrupulosity in both clinical and nonclinical populations.
  • This measure can significantly predict hoarding symptoms.