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<p>Suicidal ideation tends to be hidden, limiting the ability of current assessment tools to reliably identify at-risk individuals. Based on the spreading activation model, this study developed the Suicide Stem Completion Measurement (SSCM) as an implicit assessment tool. First, the stem was determined and evaluated by experts. Subsequently, 2,250 adolescents were recruit from two middle schools to completed the SSCM and other relevant measures. Finally, an exploratory study with a small sample compared participants based on interviews and questionnaires, both of which confirmed the presence of self-injurious thoughts and behaviors. The results showed that: (1) The single-dimensional structure of the SSCM was good; (2) The scale showed acceptable internal consistency and split-half reliability; (3) Different clusters were effectively distinguished, and good correlations with various criterion validity were demonstrated; (4) The ROC curve analysis showed that SSCM had an AUC of 0.76 for identifying suicide risk; (5) Analyses based on both interview and questionnaire data revealed that participants with self-injurious thoughts and behaviors scored significantly differently on the SSCM compared to the control group. However, no significant difference was found between the two at-risk groups. These findings indicate that the SSCM demonstrates potential utility as an effective tool for assessing suicide risk.</p>

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Suicidal ideation comes to surface: a Suicide Stem Completion Measurement for implicit suicide risk

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月25日

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  • Yu Liu,
  • Qingqiu Ai,
  • Xueping Wang,
  • Chunhua Kang,
  • Weijian Li,
  • Lingfeng Gao

摘要

Suicidal ideation tends to be hidden, limiting the ability of current assessment tools to reliably identify at-risk individuals. Based on the spreading activation model, this study developed the Suicide Stem Completion Measurement (SSCM) as an implicit assessment tool. First, the stem was determined and evaluated by experts. Subsequently, 2,250 adolescents were recruit from two middle schools to completed the SSCM and other relevant measures. Finally, an exploratory study with a small sample compared participants based on interviews and questionnaires, both of which confirmed the presence of self-injurious thoughts and behaviors. The results showed that: (1) The single-dimensional structure of the SSCM was good; (2) The scale showed acceptable internal consistency and split-half reliability; (3) Different clusters were effectively distinguished, and good correlations with various criterion validity were demonstrated; (4) The ROC curve analysis showed that SSCM had an AUC of 0.76 for identifying suicide risk; (5) Analyses based on both interview and questionnaire data revealed that participants with self-injurious thoughts and behaviors scored significantly differently on the SSCM compared to the control group. However, no significant difference was found between the two at-risk groups. These findings indicate that the SSCM demonstrates potential utility as an effective tool for assessing suicide risk.