Other Document 1

A letter between person X and person Y discussing how research was going.

Other Document 3

Originally published in 1973 in the Journal of Childhood Development, Alberta, Canada

Other Document 2

An unfinished and unpublished manuscript on the subject of OEs from 1947

Piechowski Document 1

Originally published in the spring edition of the Journal of Health and Wellness in 1977.

Piechowski Document 2

A letter between Michael Piechowski and Chris Wells on the theoretical differences between overexcitabilities and ADHD

Piechowski Document 3

An unfinished and unpublished manuscript by Michael Piechowski on the potential neurological origins of overexcitabilities

Dabrowski Document 1

A personal letter from Kazimierz Dąbrowski to the president of the American Psychological Association discussing the dangers of pathologizing anxiety symptoms.

Dabrowski Document 3

An unfinished and unpublished manuscript of research into the origins of psychomotor overexcitability in aging populations, conducted 1961-1966 at the University of Alberta