RecruitingPhase 3Behavioural interventionAffirmative Family and Individual Psychotherapy for Sexual and Gender Minority Adults and Their Nonaccepting ParentsThe purpose of this study is to assess the efficacy of an LGBTQ-affirmative individual cognitive behavioral psychotherapy (CBT) and LGBTQ-affirmative family therapy (attachment-based family therapy for sexual and gender minority young adults; ABFT-SGM) delivered via telehealth to a sample of sexual and gender minority adults with nonaccepting parent(s) in New York, Pennsylvania, Connecticut, and Israel. The investigators will assess whether both treatments are associated with significant decreases in depressive and anxiety symptoms. The investigators will also assess whether and how each treatment achieves reductions in mental health symptoms through specific mechanisms (e.g., rejection sensitivity, internalized stigma, emotion dysregulation, parental rejection and acceptance).