> n=21, no control group, zero blinding. Placebo response is notoriously high in depression studies, so it's unacceptable that they didn't include a control group.

Went into the comments to find out about this, this is ridiculous, there have been numerous studies on precisely that, take for a popular example Vsauce’s Power of suggestion video (soooorry, not sure if its free now for non-red subscribers, but valuable anyway) https://youtu.be/QDCcuCHOIyY