I don't exactly know what treatment modality means but we would get an assignment from the therapist which would be
A) write about a specific trauma, read to therapist, then share in trauma process group, receive feedback from peers and therapist moderator.
In that group we'd also share letters to others such as family members, perpetrators, compassion letters to ourselves...
B) Relapse behaviors, such as humor, minimizing, catastrophizing, caretaking...then going through a sheet talking about different aspects of that such as triggers, automatic thoughts, negative impacts and adaptive coping skills.
C) we'd also get projects based on our issues like the difference between anger and rage and healthy anger, which was an art project for me.
There were also education groups on dbt, pacing and containment, sexual healing, art therapy, inner child work....
Does that answer your question? I guess it was a combination of cbt and dbt.