Cognitive behavioral therapy is a more standardized and measurable type of therapy than things like interpersonal therapy or problem solving therapy or psychody

Cognitive behavioral therapy is a more standardized and measurable type of therapy than things like interpersonal therapy or problem solving therapy or psychodynamic therapy, and thus it is easier to study in a controlled setting. So there are more studies of CBT than other types of therapy just because it is easier to study I don't have references offhand but there are controlled studies that show benefit of other types of therapy Overall all though, all psychotherapy studies are messy