Anecdotal at best. Never is too strong of a word here. I was expecting a study to be accompanied by the article given the conviction insinuated in the title.

Anecdotal at best. Never is too strong of a word here. I was expecting a study to be accompanied by the article given the conviction insinuated in the title. Groups can come in various shapes and forms but generally they often come with a group leader, and that person can play a major role in defining success/failure.