The present study attempted to incorporate several tests that had specific indices for identifying memory malingering into a battery for the assessment of memory malingering. Two measures, a famous faces test and a subjective memory questionnaire were constructed originally by the author. These measures were pilot-tested on a group of demented community geriatric participants (n=10) and control geriatric participants (n = 12). Three indices indicative of memory malingering in Hong Kong List Learning Test (HKLLT) were explored. The indices of the HKLLT, the two new measures and the Test of Memory Malingering were incorporated into a battery for detection of memory malingering. Using an analogue design, the battery was tested on a group of community participants (N = 58) who were randomized into two conditions, simulated malingering (SM) condition (n = 25, one was excluded because of non-compliance to experimental instructions) and true effort (TE) condition (n = 32). Participants in the SM group were given instruction to exaggerate memory complaints after a hypothetical head injury while the TE condition instructed participants to do his/her best. The subjects were tested on 6 measures of the battery and 2 other tests. A manipulation check was also completed. The results indicated significant difference between the two conditions on all the measures. The cut-off scores of the measures attained sensitivity from .4 to .84 and specificity of .9 to 1. Using discriminant analysis, the overall hit rate was 93% and using logistic regression, the overall hit rate was 98%. The measures were then tested on a group of depressed patients (N = 39) who were randomized into SM (n = 19) and TE condition (n = 20). Manipulation check indicated that about 80% of depressed participants of SM group were unable to comply with malingering instruction. Analysis was then done to compare the performance of community SM sample (n = 25) with community TE sample (n = 32) and depressed TE sample (n = 20). Results found significant difference between simulated malingering and control and depressed sample respectively. No significant difference was found between community control and depressed sample. Using the cut-off scores obtained from the normal sample, specificity of depressed sample on 3 measures was lowered. Using discriminant analysis and logistic regression, two-group classification (simulated malingering and non-simulated malingering) reached an overall hit rate of 92% and 94% respectively. Using 4 indictors of the battery achieved sensitivity of 68%, specificity of 100 % in normal control and 100% in depressed sample. The effect of depression, base rate of malingering in affecting the classification, the issue of use of simulation in research design and future research direction was discussed. / Chang Suk Yi Sonia. / "July 2006." / Adviser: Agnes Chan. / Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1919. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (p. 156-179). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.

PDSE are common (19.6%) in the local stroke population. Both premorbid factors as well as stroke-related factors contribute to the development of PRSD and PSDE. The application of different diagnostic criteria for PSDE will affect the frequency and the associated radiological characteristics. As regards the screening methods of PSDE, a more specific instrument should supplement the IQCODE or MDRS-IP in a two-stage screening procedure. / PSD is also common (16--17%) among local stroke survivors. Both psychosocial factors and the location of cerebrovascular lesions play an important role in the development of PSD. PSD in local Chinese seems to have a favorable short-term outcome in comparison with their Caucasian counterparts. With regard to the screening of PSD in Chinese, we found that both the GDS and HADS depression subscale have a satisfactory response rate and accuracy in detecting PSD. However, due to the relative low frequency of PSD in the local stroke population, a more specific instrument should supplement the GDS in a two-stage screening procedure. Finally, the familiarity of the rater with the subjects based on a preexisting therapeutic relationship did not influence the accuracy of screening for PSD in Chinese patients. / There has been a paucity of data on the frequency, clinical correlates and methods of screening of poststroke dementia (PSDE) and depression (PSD) in Chinese populations. The objective of this thesis is to examine the prevalence, diagnostic criteria and clinical correlates of PSDE and PSD in Chinese stroke patients in Hong Kong. A series of studies were all carried out; the author of the thesis had interviewed all the subjects 1--3 months after their index stroke and made the diagnosis of dementia and depression according to the DSM-IV criteria. / Tang Wai Kwong. / "July 2005." / Adviser: Gabor S. Ungvari. / Source: Dissertation Abstracts International, Volume: 67-01, Section: B, page: 0177. / Thesis (M.D.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (p. 136-191). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / School code: 1307.