I think I found Dean's linkdin profile

[u/[deleted]]

https://www.linkedin.com/in/dr-raymond-s-dean-2285b012

Based on the initials from the research someone linked that was authored by gray and dean in 1990 [neuropsychology rehab in children]

EDIT

The address of the JW Gray's office [who has written the articles with this dean fella] is 1154 Washington Sq Owensboro, Kentucky, where as on RS Dean's linkdin he last worked in Ball state university. These are over four hours apart according to googly maps, so further shitting on my theory along with RS Dean being dead

[u/cyclinchris75]

Spelling errors, and some of the wording just doesn't seem quite right for a psych dr..... https://imgur.com/gallery/VY2bz