Background and Objectives: Each year nearly one million people die due to suicide that makes this issue one of the most imperative medical urgency subjects. This study aimed to assess the relationship among Death Anxiety, Mattering, Perceived Burdensomeness and Thwarted Belongingness with Suicidal Behavior in college students.
Materials and Methods: In this descriptive correlation study, using convenience sampling 331 students of Mohaqeqe Ardebili university were selected. After Project approval at the scientific research deputy office of the university, the participants completed the Interpersonal Needs Questionnaire (INQ), Suicidal Behavior Questionnaire-Revised, Mattering Inventory and Death Anxiety Questionnaire. Research data were analyzed by descriptive statistics indices, Pearson correlation analysis, and multivariate regression by using SPSS ver. 22.
Results: The result showed that there is a significant relationship between Perceived Burdensomeness and Thwarted Belongingness with Suicidal Behavior in college students, but Perceived Burdensomeness could explain and predict Suicidal Behavior better than Thwarted Belongingness. Also, there is a significant and negative relationship between mattering and Suicidal Behavior but by controlling interpersonal needs via partial correlation this relationship disappeared. Moreover, there is no significant relationship between death anxiety with Suicidal Behavior, Perceived Burdensomeness and Thwarted Belongingness.
Conclusion: Generally, our findings suggested that The Interpersonal-Psychological Theory could explain moderately Suicidal Behavior and ideation.