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Psychometric Properties of the Modified Scale for Suicidal Ideation-Self-Report-Revised With High-Risk Adolescents
Roberto López1, Christianne Esposito-Smythers1, Philseok Lee1
1George Mason University.
Behavior Therapy
|February 26, 2025
Summary
A new scale, the Modified Scale for Suicidal Ideation-Self Report-Revised (MSSI-SR-R), shows promise for assessing suicidal ideation severity in adolescents. This free, evidence-based tool demonstrated good reliability and validity in a partial hospital program sample.
Area of Science:
- Psychiatry and Mental Health
- Clinical Psychology
- Adolescent Health
Background:
- Adolescents with suicidal ideation have a high risk (40%) of progressing to suicidal behavior.
- Accurate assessment of suicidal ideation severity is crucial for effective clinical care.
- Limited availability of free, evidence-based, self-report measures for assessing suicidal ideation severity in adolescents.
Purpose of the Study:
- To evaluate the psychometric properties of a revised self-report measure, the Modified Scale for Suicidal Ideation-Self Report-Revised (MSSI-SR-R).
- To assess the reliability, validity, and factor structure of the MSSI-SR-R in an adolescent sample.
- To examine measurement invariance of the MSSI-SR-R across different sexual identities.
Main Methods:
- A sample of 284 adolescents (mean age 15.30) in a partial hospital program completed the MSSI-SR-R.
- Bifactor exploratory structural equation modeling was used to assess the factor structure.
- Internal consistency was determined using omega; validity was assessed via correlations with established measures of suicidal ideation, behavior, and depressive symptoms.
Main Results:
- The MSSI-SR-R supported a bifactor model with a general factor and two specific factors (Desire/Ideation, Plans/Preparation).
- The scale demonstrated measurement invariance across sexual identity.
- The MSSI-SR-R total score exhibited good reliability and significant positive associations with measures of suicidal ideation, behavior, and depressive symptom severity.
Conclusions:
- The MSSI-SR-R demonstrates promising psychometric properties for assessing suicidal ideation severity in adolescents.
- The scale's factor structure is robust and invariant across sexual identity.
- The MSSI-SR-R may serve as a valuable, brief, free, and validated clinical tool for assessing suicidal ideation severity in adolescent populations.
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