The interpersonal-psychological theory of suicide and the role of psychological pain during the COVID-19 pandemic: A network analysis

Introduction: Among the most investigated theories explaining suicidal behavior there are the interpersonal-psychological theory of suicide (IPTS) by Thomas E. Joiner and the one focused on the construct of psychological pain (or psychache, or mental pain). Objective: Since it remains unclear whether these two different theories correlate with each other in the explanation of suicidal risk, we used a network analysis approach to investigate the complex interplay between both IPTS and psychological pain theories and history of suicidal planning and/or suicide attempt (SP/SA). Methods: A sample of 1,586 university students from various Italian universities was recruited between April 24th, 2020 and February 23rd, 2021, hence during the COVID-19 pandemic. To be included subjects should have been university students and aged between 18 and 35 years old. Results: Within a network that included the core factors from both models (IPTS and psychological pain), higher fearlessness about death (Acquired Capability for Suicide Scale-Fearlessness About Death, ACSS-FAD) and higher psychological pain (Psychache Scale) were the variables most strongly associated with history of SP/SA. Conclusions: Considering a large number of variables, history of SP/SA was explained in particular by fearlessness about death and psychological pain in university students. Hence these aspects should be targeted in the treatment for suicide prevention.