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Suicidal Ideation Questionnaire
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About Suicidal Ideation Questionnaire
Scale Name
Suicidal Ideation Questionnaire
Author Details
William M. Reynolds
Translation Availability
English
Background/Description
The Suicidal Ideation Questionnaire (SIQ), developed by William M. Reynolds, is a self-report assessment tool designed to measure the severity and frequency of suicidal thoughts in adolescents and young adults. It is widely used in clinical, educational, and research settings to identify individuals at risk of suicide. The questionnaire helps professionals assess the presence of suicidal ideation and make informed decisions regarding intervention and treatment planning.
The SIQ exists in two versions:
- SIQ (Grades 10–12): A 30-item questionnaire for older adolescents and young adults.
- SIQ-JR (Grades 7–9): A 15-item version designed for younger adolescents.
Participants rate the frequency of their suicidal thoughts on a 7-point Likert scale ranging from Never (0) to Almost Every Day (6). The total score reflects the severity of suicidal ideation, with higher scores indicating greater risk. This tool is invaluable for early detection and timely intervention in mental health care.
Administration, Scoring and Interpretation
- Obtain a licensed copy of the Suicidal Ideation Questionnaire (SIQ) from Psychological Assessment Resources (PAR), Inc.
- Explain the purpose of the assessment, ensuring confidentiality and emphasizing the importance of honest responses.
- Provide clear instructions for completing the questionnaire, typically administered in 10–15 minutes.
- Administer the assessment in a private and supportive environment, ensuring the availability of mental health professionals for immediate follow-up if necessary.
- Score the questionnaire according to the provided manual and interpret results using established cut-off points to identify individuals at risk.
Reliability and Validity
The SIQ demonstrates high internal consistency (Cronbach’s alpha above 0.90), ensuring reliability in measuring suicidal ideation. Test-retest reliability indicates stable results over time. Its construct validity is supported by strong correlations with other measures of depression, hopelessness, and suicidal behavior, making it a highly reliable tool for risk assessment.
Available Versions
15-Items
Reference
Reynolds, W. M. (1987). Suicidal ideation questionnaire (SIQ). Odessa, FL: Psychological Assessment Resources.
Important Link
Scale File:
Frequently Asked Questions
What is the Suicidal Ideation Questionnaire (SIQ)?
It is a self-report tool designed to assess the frequency and severity of suicidal thoughts in adolescents and young adults.
Who developed the SIQ?
The SIQ was developed by William M. Reynolds, Ph.D., in 1987.
How long does the SIQ take to complete?
It typically takes 10–15 minutes.
What is the difference between SIQ and SIQ-JR?
The SIQ is for older adolescents (Grades 10–12), while the SIQ-JR is a shorter version for younger adolescents (Grades 7–9).
Is the SIQ reliable and valid?
Yes, it demonstrates high reliability and strong validity in identifying individuals at risk of suicide.
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