Tacke B, Freistein H, Kempf H, Windheuser A
Pharmakopsychiatr Neuropsychopharmakol. 1975 Mar;8(2):82-9. doi: 10.1055/s-0028-1094446.
Ten chronic schizophrenics were tested by clinical observations, psychological tests (FPI, LEV, d 2) and ratings with the Wittenborn-Psychiatric-Ratings-Scales (WPRS) before and after taking 2-pyrrolidon-acetamid. The improvement of obstructive, apathy, withdrawal and affective flatness in seven patients justify a double-blind psychometric evaluation concerning the effect of Piracetam on the schizophrenic deficiency states.
