Abstract
Background/Objectives: Many prison-sentenced individuals exhibit symptoms of mental dysfunctions, including attention deficit hyperactivity disorder (ADHD). The presence of co-occurring mental disorders further complicates their rehabilitation and social reintegration efforts. Given these challenges, understanding the role of specific disorders, such as ADHD, is critical for developing targeted interventions tailored to the needs of incarcerated individuals and improving their outcomes. This research aimed to clarify the relationships among hyperactivity, criminal behavior, and psychological functioning to inform preventative and therapeutic strategies. Methods: This study investigated the complex interplay among attention deficit hyperactivity disorder (ADHD) symptoms, criminal behavior, and various psychological factors in a sample of 391 male inmates from low-security Polish prisons and a control group of non-offending men. Principal component analysis (PCA) and Spearman's rank correlation were used to analyze the relationships among ADHD severity, type of crime (no crime, property crime, crime involving aggression), family functioning, childhood trauma, early maladaptive schemas, and mental health disorders. Results: The results revealed that while traumatic experiences were present across all groups, stronger family cohesion and support were associated with the absence of ADHD symptoms and criminal behavior. As ADHD severity and criminal behavior escalated, particularly in cases involving aggression, family support diminished, and maladaptive schemas, including "disconnection and rejection" and "excessive vigilance and inhibition", became more prominent, alongside increased correlations with mental health issues (anxiety and depression). Conclusions: The findings underscore the crucial role of family environment and early intervention in mitigating the risks associated with ADHD and criminal behavior, highlighting the need for comprehensive interventions targeting maladaptive schemas and providing support for both internalizing and externalizing symptoms. Limitations include the retrospective nature of data collection and the exclusive focus on male inmates in low-security facilities.