Development of Self-regulation by Dialectial Behavioural Therapy in Adults With Autism

The inclusion criteria to enroll in the study are the same as the inclusion criteria for integrative DBT. Inclusion Criteria: * Age ≥ 18 years old. * A clinical diagnosis of ASD as diagnosed by a qualified health care professional (in Dutch: BIG registration). * Non-responding to TAU (treatment as usual) for at least a year. * IQ ≥ 85, based upon previous levels of education or previous IQ test, when available. * Consent from the participant to record the DBT sessions on video or audio for supervision and assessing therapy integrity. * Proficient in the Dutch language. * Motivation to address problems through integrative DBT. * Ability to work on treatment goals in collaboration with multiple therapists and counselors and to function in a group of maximal 8 adults with ASD. Exclusion Criteria: \- Severe, current psychotic and manic symptoms, severe substance abuse disorder and eating disorder, requiring other specialized treatment first.