Modafinil Augmentation Therapy for Excessive Daytime Sleepiness and Negative Symptoms in Patients With Schizophrenia

Inclusion Criteria: * Subjects must be able to communicate and give voluntary informed consent * Subjects must be of the male gender * Between the ages of 18 to 65 years. * A diagnosis of Schizophrenia or Schizoaffective disorder as determined by DSM-IV criteria. * Not conservatorized * A negative symptom score on the PANSS of \>= 20 and an MMSE score of \>24 * No clinical evidence of a current unstable medical illness * No current clinical evidence or past history of cerebral neurological impairment (including strokes, tumors or trauma leading to loss of consciousness) * No history of drug or alcohol dependence in the past 2 years * No evidence of drug or alcohol abuse in the past year, as determined by the DSM-IV criteria. * No diagnosis of Narcolepsy as determined by DSM-IV criteria * Must have an approved contact person for the duration of the study * May be on a stable dose of SSRI for depressive symptoms * No history of aggression * No uncontrolled hypertension, as defined below (subjects cannot have any of the following): 1. a new diagnosis of hypertension, or 2. a change in antihypertensive medications in the past 30 days, or 3. acute hypertension (systolic\>160mmHg, diastolic\>100mmHg) * Maybe on a stable dose of a benzodiazepine * The following medications will not be allowed during the study- methylphenidate, amphetamines, pemoline, zolpidem, MAO inhibitors, anticoagulant, TCA's, or barbiturates. * Be on a stable does of an atypical neuroleptic * May be on a stable does of an anticonvulsant for mood stabilization Exclusion Criteria: * Subjects cannot be female.