Clinical Research Directory

Inclusion Criteria: * Adults aged 19 to 34 years * South Korean nationality * Interpersonal Competence Questionnaire, 15-item short form (ICQ-15): mean score of 2.87 or lower * Meets either (a) or (b) below: * (a) Lubben Social Network Scale-6 (LSNS-6) total score of less than 12, AND short-form UCLA Loneliness Scale-8 total score of 17 or higher * (b) Korea University Social Isolation Scale (KUSIS) total score of 9 or higher * Confirmation on a non-face-to-face screening interview that the participant's primary difficulty involves interpersonal problems stemming from a lack of social knowledge and skills Exclusion Criteria: * Psychiatric or neurological hospitalization within the past 6 months * Current or past diagnosis of a severe neurological disorder * Cognitive impairment severe enough to hinder the basic communication required for program participation * Suicide attempt within the past 6 months * Severe suicide risk identified during the assessment * History of psychotic symptoms or manic episodes * Severe psychiatric condition or major medical abnormality that would complicate participation * Unable or unwilling to follow the research team's instructions during the application process * Currently participating in individual or group psychotherapy that provides training in other social skills * Participation within the past 5 years in a study on social isolation conducted by an investigator of the present research team, which raises concern for a confounding effect on the study results