I wonder if this is due to allegiance effects [1] inflating the effect of CBT in the earlier studies. I would expect that the older a CBT study is, the more inf

I wonder if this is due to allegiance effects [1] inflating the effect of CBT in the earlier studies. I would expect that the older a CBT study is, the more influence the originators and promoters of CBT had on it. [1]: https://www.ncbi.nlm.nih.gov/pubmed/26033943 https://www.ncbi.nlm.nih.gov/pubmed/26033943