Thesis (Ph.D)--Virginia Commonwealth University, 2009. / Prepared for: Dept. of Human Genetics. Title from title-page of electronic thesis. Bibliography: leaves 117-151.

Thesis (M. Phil.)--University of Hong Kong, 2010. / Includes bibliographical references (p. 104-121). Also available in print.

published_or_final_version / Psychiatry / Doctoral / Doctor of Philosophy

Lack of eye contact is one of the key clinical observations in schizophrenia. Sixteen schizophrenic patients and sixteen control subjects participated in our study of eye gazing. Frequencies of eye contact of both groups were measured in a role-play test which is closer to a natural environment. Autistic traits of both groups were measured using the Autism Quotient Questionnaire. We hypothesized that patients’ frequencies of eye contact were fewer than control subjects. We anticipated that patient group would score high in AQ. Furthermore, we examined the relationship between frequency of eye contact and cognitive functioning and symptomatology. Lastly, the study also examined the relationship between frequency of eye contact and autistic traits. Result showed that patients’ eye contact were significantly fewer than control group. Patients’ overall cognitive functioning was not as good as control group. In addition, schizophrenic patients scored significantly higher than control group in the Autism Quotient Questionnaire; autistic traits were found in schizophrenia patients. There was no relationship between frequency of eye contact and cognitive functioning. Nonetheless, negative correlation was found between frequency of eye contact and Digital symbol. More eye contact was associated with lower Digital symbol score. No relationship was found between frequency of eye contact and Autism quotient. Lastly, a trend correlation was found between frequency of eye contact and PANSS negative score; more eye contact was associated with higher PANSS negative score. / published_or_final_version / Psychological Medicine / Master / Master of Psychological Medicine

Schizotypal Cognitions (RISC) were related to interview derived ratings of DSM-III-R schizotypal personality disorder and other personality disorders in a non-clinical college sample was examined. Moderate correlations between the RISC and schizotypal scores, but not between the RISC and other personality disorders, provided support for the validity and suggested reasonable specificity for the instrument. RISC scores correlated the greatest with schizotypal symptoms that reflect a strong cognitive component (e.g., perceptual illusions) but did not correlate with symptoms associated with social adaptation or interpersonal functioning (e.g., excessive social anxiety). Cutoff scores set at approximately 2 S.D. above the RISC mean best discriminated between non-cases and cases of subthreshold and definite schizotypal personality disorder. Limitations of the RISC and suggestions for future research are discussed. / Department of Psychological Science

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Thesis (Ph. D.)--University of Washington. / Bibliography: l. [91]-96, 189.

Thesis (Ph.D)--University of Tulsa, 1995. / Includes bibliographical references (p. 60-76).