References for "Negative symptoms", July 2006
Artaloytia JF, et al. "Negative Signs and Symptoms Secondary to Antipsychotics: A Double-Blind, Randomized Trial of a Single Dose of Placebo, Haloperidol, and Risperidone in Healthy Volunteers," American Journal of Psychiatry (March 2006): Vol. 163, No. 3, pp. 48-93.
Barch DM, et al. "The Relationships among Cognition, Motivation, and Emotion in Schizophrenia: How Much and How Little We Know," Schizophrenia Bulletin (October 2005): Vol. 31, No. 4, pp. 875-81.