Suicide Prevention Education for the Public: How effective is Addressing the Bystander Effect through the Bystander Intervention Model in increasing knowledge, confidence and intent to intervene?

The intervention is Bystander Intervention Model (BIM)-informed suicide prevention education material. This material is a PDF factsheet teaching participants about suicide risk factors, warning signs and protective factors and teaching them how to intervene. This is provided in the online questionnaire of this study. Participants are provided with a link to the online questionnaire in the study advertisement. The questionnaire presents the following information in order: demographics, 'Bystander Intervention Model Performance Scale' (BIMPS), hypothetical scenario of someone presenting with suicide risk, 'Confidence and Intent to Intervene Scale' (CITIS), education PDF, BIMPS time 2, CITIS time 2, Manipulation Check Questions asking how much the education information aligned with the BIM, debrief page. The total questionnaire takes approx. 30-45 min to complete. As stated, the intervention is only delivered once during the overall questionnaire. Adherence is assessed through timing how long participants spend on reading the page. This factsheet was designed specifically for this study based on evidence-based, best practice guidelines in suicide risk assessment and intervention. The factsheet is 8 pages - mostly graphics and bullet points - taking approx 10 min to read.