Beshaun J. Davis

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To determine whether a general-purpose epidemiologic questionnaire can be used in childhood cancer hospitals to identify associations between environmental factors and the major types of childhood cancer, we report the results of the analysis of the data obtained from such a questionnaire. On admission to St. Jude Children's Research Hospital in Memphis,(More)
Although formal thought disorder (FTD) has been described since early conceptualizations of psychosis, its underlying mechanisms are unclear. Evidence suggests FTD may be influenced by affective and cognitive systems; however, few have examined these relationships-with none focusing on early-stage psychosis (EP). In this study, positive FTD and speech(More)
OBJECTIVES Although acute hypothalamic-pituitary-adrenal axis response to stress is often adaptive, prolonged responses may have detrimental effects. Many components of white matter structures are sensitive to prolonged cortisol exposure. We aimed to identify a behavioral laboratory assay for cortisol response related to brain pathophysiology in(More)
OBJECTIVES The cognitive model of poor functioning in schizophrenia posits that defeatist performance beliefs-overgeneralized negative beliefs about one's ability to perform tasks-develop prior to the onset of psychosis and contribute to the development and maintenance of negative symptoms and poor functioning. Although several studies with schizophrenia(More)
Despite evidence that adolescence represents a critical period of risk, many pediatric mental health providers have little training in the identification and treatment of psychotic disorders. This pilot study sought to assess pediatric and adult mental health providers' level of comfort with treating schizophrenia, engaging families, and working with(More)
Literature on the relationship of cannabis use and cognition in schizophrenia provides the paradoxical view that cannabis use is sometimes linked with less severe impairment in neurocognition. This paper explored the possibility that this is a reflection of a dose related response between lifetime cannabis use and two forms of cognition, neurocognition and(More)
Disentangling links between neurocognition, social cognition, and metacognition offers the potential to improve interventions for these cognitive processes. Disorganized symptoms have shown promise for explaining the limiting relationship that neurocognition holds with both social cognition and metacognition. In this study, primary aims included: 1) testing(More)
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