T.J.Crow
Type I
Type II


Positive Symptoms
Negative Symptoms


CT and MRI normal
CT and MRI shows enlarged ventricles


Good Prognosis
Bad Prognosis
Coined the term "Dementia Praecox"
Gave 11 First rank symptoms
Divided Schizophrenia into 2 subtypes , Type I & Type II
Gave 4 'A's of Schizophrenia.