Suicidal Ideation Questionnaire (SIQ)
- General information
- Structure and administration
- Sample norms, reliability, and validity
Author(s)/developer(s): Reynolds, W.M.
Date(s) of publication: 1987
Version(s): Original (SIQ) and Junior (SIQ-JR) versions
Primary: Suicide, self-harm
Secondary: None identified
To assess suicidal ideation in adolescents.
Use(s) of information:
This measure may be used to assess suicidal ideation, or to assess suicide risk.
Adolescents in grades 7-9 (ages 12-15; SIQ-JR) or grades 10-12 (ages 15-18; SIQ)
Arabic, Chinese, English, French (International), Hebrew, Korean, and Spanish.
Additional information to inform measure useOther considerations:
Please note that there is also an adult version of this measure called the Adult Suicidal Ideation Questionnaire (ASIQ).
Ontario-based programs or initiatives using this measure:
Implementation evaluation of the assessment process
Cognitive behavioural therapy group interventions
Youth Outpatient Clinics at the Royal Ottawa Mental Health Centre
Structure and administration
Method(s) of administration:
Number of items:
15 (SIQ-JR) or 30 (SIQ)
Information not indicated / not available at this time
7-point scale from 0 (I never had this thought) to 6 (almost every day).
Estimated time to administer:
10 minutes or less.
Information not indicated / not available at this time
Training requirements, scoring and interpretation:
Measure is scored manually and takes approximately 10 minutes. Higher scores indicate greater severity of suicidal ideation. Scoring and interpretation requires certification or licensing in a health care profession (e.g., psychology, medicine, nursing, occupational therapy, social work, etc.) as well as training and experience in the administration, scoring, and interpretation of clinical behavioural assessment instruments.
Sample norms, reliability, and validity
The norms, reliability and validity statistics included in each measure profile are those reported by the author(s) of the measure. It is important to note that altering, adding or removing questions from a measure voids these reported statistics, possibly making the revised tool unreliable and invalid.
Sample for development of norms:
SIQ: 890 adolescents in grades 10-12, with approximately equal numbers of males and females. The majority (78%) of participants were Caucasian.
SIQ-JR: 1290 adolescents in grades 7-9, with approximately equal numbers of males and females. The majority (74%) of participants were Caucasian.
SIQ: The author reports internal consistency reliabilities (alphas) of 0.93-0.97, and a test-retest reliability of 0.72. Further studies have reported alphas of 0.91-0.98 and test-retest reliabilities of 0.87-0.93 (please see Key References for more details).
The author reports evidence of discriminative validity, minimal divergent validity, and exemplary convergent validity. Further studies have reported evidence of discriminative validity, good sensitivity and specificity, predictive validity, minimal concurrent validity, and exemplary convergent validity (please see Key References for more details.
Cost to use
No copy available from the Centre. Contact author or publisher
The introductory kit (including manual, 25 each of the SIQ and SIQ-JR hand-scorable answer sheets, SIQ scoring key, the SIQ-JR scoring key) costs $196.00. The manual costs $45.00. Hand-scorable answer sheets come in packages of 25 (available for the SIQ and SIQ-JR separately) and cost $60.00 each. Scoring keys for either the SIQ or the SIQ-JR cost $22.00 each. All prices are in U.S. dollars and are accurate as of July 2015.
Contact Information / Ordering Information:
16204 North Florida Ave.
Phone: 1-800-331-8378 or 1-813-449-4065
Fax: 1-800-727-9329 or 1-813-961-2196
Abdel-Khalek, A., & Lester, D. (2007). The psychometric properties and correlates of the Reynolds' Suicide Ideation Questionnaire with Kuwaiti and American students. Archives of Suicide Research, 11(3), 309-319.
Carmer, J. . (1992). Review of the Suicidal Ideation Questionnaire. In J.J. Kramer & J.C. Impara (Eds.), 11th Mental Measurements Yearbook. Lincoln, NE: Buros Institute of Mental Measurements.
Cho, S.-C., Kim, J.-W., Choi, H.-J., Kim, B.-N., Shin, M.-S., Lee, J.-H., & Kim, E.-H. (2008). Associations between symptoms of attention deficit hyperactivity disorder, depression, and suicide in Korean female adolescents. Depression & Anxiety, 25(11), E142-E146.
Conoley, C. (1992). Review of the Suicidal Ideation Questionnaire. In J.J. Kramer & J.C. Impara (Eds.), 11th Mental Measurements Yearbook. Lincoln, NE: Buros Institute of Mental Measurements.
Fu, K., Chan, W.S.C., Wong, P.W.C., & Yip, P.S.F. (2010). Internet addiction: Prevalence, discriminant validity and correlates among adolescents in Hong Kong. The British Journal of Psychiatry, 196(6), 486-492.
Gutierrez, P.M., & Osman, A. (2009). Getting the best return on your screening investment: An analysis of the Suicidal Ideation Questionnaire and Reynolds Adolescent Depression Scale. School Psychology Review, 38(2), 200-217.
Horesh, N., & Apter, A. (2006). Self-disclosure, depression, anxiety, and suicidal behavior in adolescent psychiatric inpatients. Crisis, 27(2), 66-71.
Hovey, J.D., & King, C.A. (1996). Acculturative stress, depression, and suicidal ideation among immigrant and second-generation Latino adolescents. Journal of the American Academy of Child & Adolescent Psychiatry, 35(9), 1183-1192.
Keane, E.M., Dick, R.W., Bechtold, D.W., & Manson, S.M. (1996). Predictive and concurrent validity of the Suicidal Ideation Questionnaire among American Indian adolescents. Journal of Abnormal Child Psychology, 24(6), 735-747.
Mangeney-Hirsch, S., Courtois, R., Lecocq, G., Rusch, E., & Porcheron, E. (2008). Abus sexuel et inaptitude à l'éducation physique et sportive. Annales Médico-psychologiques, 166(10), 799-807.
Potard, C., Kubiszewski, V., Gimenes, G., & Courtois, R. (2014). Validation of the French version of the Suicidal Ideation Questionnaire among adolescents. Psychiatry research, 215(2), 471-476.
Reynolds, W.M. (1987). Suicidal Ideation Questionnaire - Junior. Odessa, FL: Psychological Assessment Resources.
Reynolds, W.M. (1988). Suicidal Ideation Questionnaire: Professional Manual. Odessa, FL: Psychological Assessment Resources.
Reynolds, W.M., & Mazza, J.J. (1999). Assessment of suicidal ideation in inner-city children and young adolescents: Reliability and validity of the Suicidal Ideation Questionnaire-JR. School Psychology Review, 28(1), 17-30.
Status: Verified and completed
Last updated: 2018-04-25