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Related Experiment Videos

Self-Injurious Thoughts and Behaviors Interview: development, reliability, and validity in an adolescent sample.

Matthew K Nock¹, Elizabeth B Holmberg, Valerie I Photos

¹Department of Psychology, Harvard University, 33 Kirkland Street, Cambridge, MA 02138, USA. nock@wjh.harvard.edu

Psychological Assessment

|September 12, 2007

Summary

The Self-Injurious Thoughts and Behaviors Interview (SITBI) is a reliable and valid tool for assessing self-harm. This structured interview accurately measures suicidal ideation, attempts, and nonsuicidal self-injury (NSSI) in adolescents and young adults.

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Area of Science:

Psychiatry
Clinical Psychology
Behavioral Science

Background:

Self-injurious thoughts and behaviors (SITB) are significant public health concerns.
Accurate assessment of SITB is crucial for effective intervention and research.
Existing assessment tools may not comprehensively cover the spectrum of self-injury.

Purpose of the Study:

To develop and evaluate the psychometric properties of the Self-Injurious Thoughts and Behaviors Interview (SITBI).
To establish the reliability and validity of the SITBI for assessing a wide range of self-injury constructs.

Main Methods:

The SITBI, a structured interview, was administered to 94 adolescents and young adults.
Interrater reliability, test-retest reliability over 6 months, and concurrent validity were assessed.
Concurrent validity was examined against established measures of suicidal ideation, suicide attempts, and nonsuicidal self-injury (NSSI).

Main Results:

The SITBI demonstrated strong interrater reliability (average kappa = .99, r = 1.0).
Test-retest reliability over 6 months was good (average kappa = .70, ICC = .44).
Concurrent validity was strong, showing high correspondence with other measures of suicidal ideation (kappa = .54), suicide attempts (kappa = .65), and NSSI (kappa = .87).

Conclusions:

The SITBI is a psychometrically sound instrument for comprehensively assessing diverse self-injury-related constructs.
The SITBI offers a reliable and valid tool for use in both research and clinical settings.
The interview's structured format facilitates ease of administration and consistent data collection.