Working with a good therapist often requires fewer sessions than other therapists to see improvement; in contrast, working with a therapist you don’t connect with, or with inadequate training, may require an extended number of sessions (Okiishi et al. 2003). People that see effective therapists are more likely to recover or partially recover, whereas those that work with a “bad” therapist are more likely to see no change or an increase in symptoms (Okiishi et al. 2006).
Link to full article/blog