Psychological Flexibility in Individuals With Substance Use Disorder: The Mediating Effect of Distress Tolerance and Stress.

Introduction: Psychological flexibility is posited to aid individuals with substance use disorder (SUD) in managing stress and tolerating distress. However, the intricacies of this mechanism remain obscure.

Aim: This study investigates the potential mediating role of psychological flexibility in the relationship between distress tolerance and perceived stress among individuals with SUD.

Method: This cross-sectional study evaluated 187 individuals with SUD, selected through non-probability convenience sampling, using the Introductory Information Form, the Perceived Stress Scale, the Distress Tolerance Scale and the Acceptance and Action Questionnaire-Substance Abuse. Data analysis was conducted using SPSS 25 and further refined with Jamovi 2.4.14, employing advanced mediation analysis techniques.

Results: Significant relationships were found between distress tolerance, perceived stress and psychological flexibility. Mediation model analysis showed that psychological flexibility mediated the relationship between distress tolerance and perceived stress.

Discussion: This study revealed that higher distress tolerance, higher psychological flexibility and lower perceived stress were associated. As individuals adopt a more flexible and accepting attitude towards distressing situations, they perceive stressful events as less threatening and more manageable.

Implications for practice: The study suggests the need for psychiatric and mental health nursing practice and education to incorporate strategies to increase psychological flexibility.