William Isaac Thomas,
The American Journal of Sociology…
(1896)
“ Our psycho-physical experiments have to do with the consciousness of the evoluted man; . . . we learn little of psychic development through them. Their application to psychic disturbances will be presumably a limited one; it sheds light upon the nature of the more profound disturbances less by direct investigation than by giving information about the changes which are associated with the condition and rise of these disturbances. ”
