Researcher listened to 12 randomly chosen recordings of therapeutic sessions and rated how well the therapist delivered the intervention as designed, and if the therapist appropriately covered the content of each session.
Meðferðin var tekin upp á upptökutæki og voru í heildina valdar 12 upptökur af handahófi sem rannsakandi hlustaði á, eða 27% af heildarupptökum.