The final answer so far for me is from heterodox academy (Sean Stevens and Jonathan Haidt). They reference all relevant meta analysis papers directly.
https://heterodoxacademy.org/2017/08/10/the-google-memo-what...
1 karma · joined August 5, 2017
https://heterodoxacademy.org/2017/08/10/the-google-memo-what...
https://heterodoxacademy.org/2017/08/10/the-google-memo-what...