One more study finds that multiple personality is rooted in traumatic experiences in childhood, not suggestibility or proneness to fantasy.

https://www.sciencedaily.com/releases/2016/05/160525220029.htm

What are the implications of multiple personality’s roots in childhood?

One thing it explains is why most adults with multiple personality have child-aged alternate personalities (in addition to their adult-aged alternate personalities).

In my recent posts on James Patterson’s Along Came a Spider, which features an adult villain suspected of having multiple personality, I noted evidence of the author’s inadequate research on multiple personality: His characters call it a psychosis, when minimal research would have informed Patterson that multiple personality is not a psychosis.

However, Patterson’s portrayal of the villain as having, at times, a childlike, evil-boy persona, and as somehow being related to a twelve-year-old criminal from the past, demonstrated the author’s insight that multiple personality has its roots in childhood. But since Patterson had done poor research on multiple personality, how did he come to have that insight? Personal knowledge?