thank you for this article and additional input, much appreciated.
and yes, it is interesting, there were some psychotherapeutic studies on it early on, too, but it is hard to measure impact for sure - myth, narratives, i think Freud did some great analysis on the importance of narratives in his cultural essays, Jung etc
i remember that as a kid i read sort of very simplified classics and there were some true horror stories (Sandman, The Mines of Falun and similar cheerful stuff by Hoffman, The Merchant of Venice etc.) they were made into illustrated books for five year olds