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The Controllability of Suicidal Thoughts (CoST) Scale: Development, factor structure, and initial validation.

Brianna Meddaoui1, Bianca C Iddiols1, Erin A Kaufman1

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This summary is machine-generated.

Researchers developed the Controllability of Suicidal Thoughts (CoST) scale to measure perceived control over suicidal thoughts. The CoST scale demonstrates reliability and validity, aiding suicide research.

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Area of Science:

  • Psychology
  • Clinical Psychology
  • Psychometrics

Background:

  • Suicidal ideation (SI) is a significant public health concern.
  • Perceived control over suicidal thoughts is a potentially important factor in understanding suicide risk.
  • A validated measurement tool for perceived control over suicidal thoughts was previously lacking.

Purpose of the Study:

  • To develop and validate a brief self-report instrument, the Controllability of Suicidal Thoughts (CoST) scale.
  • To assess the psychometric properties and factor structure of the CoST scale.

Main Methods:

  • Two online studies were conducted with convenience samples (N=244 and N=206).
  • Exploratory and confirmatory factor analyses were used to determine the scale's structure.
  • Psychometric properties including internal consistency, test-retest reliability, and construct validity were evaluated.

Main Results:

  • Factor analyses revealed a consistent two-factor structure for the CoST scale across both studies.
  • CoST scores demonstrated significant associations with measures of SI severity, self-efficacy, coping strategies, hopelessness, locus of control, and emotion dysregulation.
  • The CoST scale exhibited high internal consistency (ω = .92) and good test-retest reliability.

Conclusions:

  • The Controllability of Suicidal Thoughts (CoST) scale is a reliable and valid measure.
  • The CoST scale offers a promising tool for advancing research on suicide-related cognitions.
  • Findings suggest the CoST scale may aid in predicting suicide-related outcomes and understanding risk.