The goal of this clinical trial is to learn if Cognitive Behavioral Therapy for Depression in Autistic Youth (CBT-DAY) can improve depressive symptoms and related mechanisms in autistic youth aged 11-17 years with depression receiving care in outpatient clinical settings.
The main questions it aims to answer are:
* Does CBT-DAY lead to greater reductions in depressive symptom severity compared to treatment-as-usual (TAU)?
* Does CBT-DAY improve key mechanisms (emotional reactivity, self-esteem, and autism self-knowledge) associated with depression outcomes?
Researchers will compare CBT-DAY versus treatment-as-usual (TAU) to see if CBT-DAY results in greater improvements in depressive symptoms and related outcomes.
Participants will:
* Complete baseline, mid-treatment, post-treatment, and 3-month follow-up assessments (surveys and interviews)
* Be randomly assigned to receive either 12 weeks of CBT-DAY or treatment-as-usual
* Participate in therapy sessions during the 12-week intervention period
* Complete follow-up assessments three months after treatment to evaluate longer-term outcomes