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The Cardiff Self-Injury Inventory (English version): Convergent validity and psychometric properties.
Robert J Snowden1, Olivia Tiley1, Nicola S Gray2,3
1School of Psychology Cardiff University Cardiff UK.
Health Science Reports
|January 6, 2023
Summary
The Cardiff Self-Injury Inventory (CSII) is a reliable and valid tool for assessing self-harm behaviors. This brief measure accurately distinguishes between suicidal and nonsuicidal self-injury in clinical and research settings.
Area of Science:
- Psychiatry and Psychology
- Clinical Assessment Tools
Background:
- Self-injury is a significant public health concern.
- Existing measures of self-injury vary in length and scope.
- The Cardiff Self-Injury Inventory (CSII) was developed as a brief, nonintrusive measure.
Purpose of the Study:
- To evaluate the psychometric properties of the CSII.
- To assess the concurrent validity of the CSII against established self-harm measures.
- To determine the factor structure of the CSII.
Main Methods:
- A UK community sample of 184 participants completed the CSII, Deliberate Self-Harm Inventory (DSHI), and Suicidal Behaviors Questionnaire-Revised (SBQ-R).
- A subset of 50 participants completed the measures again 1-2 weeks later for test-retest reliability.
- Factor analysis was used to examine the underlying structure of the CSII.
Main Results:
- The CSII demonstrated strong internal reliability (0.87) and test-retest reliability (0.82).
- The CSII showed high concurrent validity with the SBQ-R (r=0.70) and DSHI (r=0.81).
- Factor analysis supported two distinct components: suicidal and nonsuicidal self-injurious behaviors.
Conclusions:
- The CSII is a psychometrically sound instrument for assessing self-injury.
- Its brevity and nonintrusive nature make it suitable for both clinical and research applications.
- The CSII effectively differentiates between suicidal and nonsuicidal self-injury.
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