Clinical Research Directory

Inclusion Criteria: * male inmates incarcerated in a male prison for violent crimes including intentional homicide, intentional injury, affray, and robbery, aged 20-58 years, with a remaining sentence exceeding 6 months, who screened positive for high alexithymia and difficulties in emotion regulation tendencies (elevated TAS-20 and DERS-16 scores), and who voluntarily agreed to participate and provided written informed consent. Exclusion Criteria: * individuals with a diagnosis of antisocial personality disorder or current mental illness diagnoses, illiterate individuals and those unwilling to participate, and, in the IAT data analysis, participants with missing data in any of the three experimental sessions, more than 10% of trials with reaction times \>10000 ms or \<300 ms, or mean error rates exceeding 20%.