Willliam Perry

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This study examined neuropsychological performance across the menstrual cycle in women with varying levels of premenstrual symptomatology. Following a 2-month period of prospective symptom documentation, there were 19 women who met DSM-IV criteria for Premenstrual Dysphoric Disorder (PMDD group) and 18 women with mild to moderate symptoms.(More)
The aim of this study was to assess the similarities and differences of patients with co-existing psychiatric and substance use disorders attending treatment in either a mental health setting or a substance abuse treatment setting. A total of 129 patients were assessed, including 65 individuals from the substance abuse treatment center and 64 individuals(More)
Deficits in attention and concentration are consistently identified as an enduring feature of schizophrenia and interfere significantly with successful social and occupational functioning in individuals with this illness. The short-term effects of hospitalization (2 weeks) on attention dysfunction in individuals with schizophrenia were studied in comparison(More)
The study was designed to assess characteristics of chronic mentally ill patients with and without a substance use disorder. Study patients (n=48) had either psychiatric illness alone (they received conventional psychiatric rehabilitation) or dual diagnoses (they received mental illness and substance abuse services). All patients were administered the Brief(More)
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