Tang W.K.,Castle Peak Hospital |
Tang W.K.,Chinese University of Hong Kong |
Chan C.Y.J.,Chinese University of Hong Kong
International Journal of Geriatric Psychiatry | Year: 2016
Introduction Self-efficacy plays an important role in mediating stressors and physical and psychological outcomes in dementia caregiving. Objectives This literature review aims to identify, summarize, and critically appraise current evidence on the psychosocial interventions used for enhancing the self-efficacy of caregivers of patients with dementia (PWD). Methods A database search from two major web gateways was conducted to identify relevant research articles with an intervention for caregivers of patients with any type of dementia that included self-efficacy as an outcome measure. Results A total of 14 studies met the criteria. The key findings and characteristics of the interventions were summarized and analyzed. The results showed that caregivers' self-efficacy and other aspects could be improved by psychosocial interventions. Conclusion The efficacy of the interventions for self-efficacy and other outcomes for caregivers and PWD were explored. Recommendations on the effects and significance of various psychosocial interventions for caregivers of PWD in enhancing self-efficacy were discussed. Copyright © 2015 John Wiley & Sons, Ltd.
Tsang M.M.Y.,Castle Peak Hospital |
Man D.W.K.,Hong Kong Polytechnic University
Schizophrenia Research | Year: 2013
Employment provides schizophrenic patients with a positive identity and hope. Cognitive impairments have been suggested to slow down the progress in work rehabilitation. The purpose of this study was to investigate the efficacy and effectiveness of VR as a cognitive intervention for enhancing vocational outcomes. 95 inpatients with schizophrenia were randomly assigned to a virtual reality-based vocational training group (VRG), a therapist-administered group (TAG) and a conventional group (CG). Twenty-five of them in each group had completed the study. Their performances were evaluated, before and after interventions, by Brief Neuropsychological Cognitive Examination, Digit Vigilance Test, Rivermead Behavioural Memory Test, Wisconsin Card Sorting Test (WCST) and Vocational Cognitive Rating Scale. Patients in the VRG were found to perform better than patients in the TAG and CG in cognitive functioning, as shown by the WCST-percentage of error (F (2, 72) = 7.146, p. <. 0.001) and the WCST-percentage of conceptual level response (F (2, 72) = 8.722, p. <. 0.001). The post-hoc test revealed that the VRG showed a better performance than both the TAG (p = 0.03) and the CG (p. <. 0.001) in the WCST-percentage of error. The VRG also showed a better performance than patients in both the TAG (p = 0.01) and the CG (p. <. 0.001) in the WCST-percentage of conceptual level response. The VRG also showed a better self-efficacy score than CG. Both VRG and TAG showed a better work performance as reflected by the on-site tests. Further studies on the use of VR in schizophrenia rehabilitation and for vocational success are discussed. © 2013 Elsevier B.V.
Chan R.C.K.,CAS Institute of Psychology |
Li H.,CAS Institute of Psychology |
Li H.,University of Chinese Academy of Sciences |
Cheung E.F.C.,Castle Peak Hospital |
Gong Q.-Y.,University of Sichuan
Psychiatry Research | Year: 2010
Research into facial emotion perception in schizophrenia has burgeoned over the past several decades. The evidence is mixed regarding whether patients with schizophrenia have a general facial emotion perception deficit (a deficit in facial emotion perception plus a more basic deficit in facial processing) or specific facial emotion perception deficits (deficits only in facial emotion perception tasks). A meta-analysis is conducted of 28 facial emotion perception studies that include control tasks. These studies use differential deficit designs to examine whether patients with schizophrenia demonstrate a general deficit or specific deficit in facial emotion perception. A significant mean effect size is found for total facial emotion perception (d=- 0.85). Patients with schizophrenia demonstrate impaired ability to perform corresponding control tasks, and the mean effect size is - 0.70. The current findings suggest that patients with schizophrenia have moderately to severely impaired perception of facial emotion. © 2009 Elsevier Ireland Ltd.
Chan O.,Castle Peak Hospital |
Chow K.K.W.,Castle Peak Hospital
Psychiatry Research | Year: 2014
Institutional aggression in forensic psychiatric setting is an under-researched subject, despite the magnitude of the problem. No studies have been conducted on the assessment of risk and the examination of predictors of aggression among the Chinese forensic psychiatric population. Our study aimed to examine the determinants of aggression in the only forensic psychiatric institution in Hong Kong, and to test the psychometric properties of a risk-assessment instrument, the Dynamic Appraisal of Situational Aggression (DASA). We recruited a representative sample of 530 consecutively admitted detainees. Qualified nurses completed two risk-assessment instruments, the DASA and the Brøset Violence Checklist (BVC), once daily during the participants' first 14 days of admission. Aggressive incidents were recorded using the revised Staff Observation Aggression Scale (SOAS-R), and participants' data were collected for multivariate analyses. We showed that female gender, diagnoses of personality disorder and substance-related disorder, and admission at other correctional institutions were associated with institutional aggression. Aggression was perpetrated by 17.7% of the participants, and the DASA was demonstrated to have good psychometric properties in assessing and predicting aggressive incidents. Our findings preliminarily support the use of daily in-patient risk-assessment and affirm the role of dynamic factors in institutional aggression. © 2014 Elsevier Ireland Ltd.
Wang K.,CAS Institute of Psychology |
Cheung E.F.C.,Castle Peak Hospital |
Gong Q.-Y.,University of Sichuan |
Chan R.C.K.,CAS Institute of Psychology
PLoS ONE | Year: 2011
Background: Theoretically semantic processing can be separated into early automatic semantic activation and late contextualization. Semantic processing deficits have been suggested in patients with schizophrenia, however it is not clear which stage of semantic processing is impaired. We attempted to clarify this issue by conducting a meta-analysis of the N400 component. Methods: Twenty-one studies met the inclusion criteria for the meta-analysis procedure. The Comprehensive Meta-Analysis software package was used to compute pooled effect sizes and homogeneity. Results: Studies favoring early automatic activation produced a significant effect size of -0.41 for the N400 effect. Studies favoring late contextualization generated a significant effect size of -0.36 for the N400 effect, a significant effect size of -0.52 for N400 for congruent/related target words, and a significant effect size of 0.82 for the N400 peak latency. Conclusion: These findings suggest the automatic spreading activation process in patients with schizophrenia is very similar for closely related concepts and weakly or remotely related concepts, while late contextualization may be associated with impairments in processing semantically congruent context accompanied by slow processing speed. © 2011 Wang et al.
Wong M.M.C.,Castle Peak Hospital
East Asian Archives of Psychiatry | Year: 2010
Objectives: This study aimed to examine the extent of weight gain in a group of patients with first-episode psychotic disorders after receiving antipsychotic treatment for 1 year, and to examine any relationship with the type of antipsychotics prescribed. Participants and Methods: A total of 160 consecutive participants with 1-year history of first-episode psychotic disorders were recruited, and their body mass index values before and 1 year after antipsychotic treatment were calculated. Results: About half of the participants gained more than 7% of their baseline body weight. In general, the participants gained a median weight of 4.8 kg (interquartile range, 0.7-9.0 kg) after 1 year of treatment. Forty percent of the female and 47% of the male participants were overweight after treatment. Patients taking second-generation antipsychotics had more severe weight gain than those taking first-generation agents. Olanzapine treatment was associated with the greatest weight gain. Conclusions: Weight gain is a significant problem even in the early stages of psychotic disorders. Health care professionals need to be aware of this issue and address it early in the course of management, so as to prevent harmful consequences of weight gain in the future. © 2010 Hong Kong College of Psychiatrists.
Tung C.-K.,Castle Peak Hospital |
Chiang T.P.,Castle Peak Hospital |
Lam M.,Castle Peak Hospital
East Asian Archives of Psychiatry | Year: 2012
Synthetic cannabinoids are hybrid herbal / chemical products which mimic the effects of cannabis. They are usually marketed as incense or 'herbal smoking blend', and best known by the brand names 'K2' and 'Spice'. Their popularity among recreational drug abusers has grown rapidly due to their easy availability, relatively low cost, non-detection by conventional drug tests, and ease of concealing their use from family and authorities. They took Europe and later North America by storm in the late 2000s, yet limited medical literature exists detailing their adverse effects. They began to emerge in the Hong Kong drug scene in 2009. We report on a man who developed acute mental disturbance after 4 weeks of daily K2 abuse. This is the first case report of mental disorder caused by synthetic cannabinoid abuse in a Chinese. © 2012 Hong Kong College of Psychiatrists.
Bressington D.,Canterbury Christ Church University |
Mui J.,Castle Peak Hospital |
Wells H.,St George's, University of London
Nurse Education Today | Year: 2013
Medication management training programmes for mental health clinicians have been shown to improve clinical outcomes for service users. These studies do not explore from a clinician's perspective how the knowledge and skills learnt during training have been applied in clinical practice and if similarly positive results are observed in differing cultural settings. This study used individual concept mapping series to explore changes in understanding and to aid self-prompted qualitative interviews following a medication management course in Hong Kong. Qualitative interview data shows clinicians developed a systematic but pragmatic approach towards delivering interventions which is in response to perceived implementation barriers. This paper highlights the importance of the cultural and clinical context when using evidence-based medication management interventions; the training may benefit from the addition of specific teaching content and support to help clinicians deal with these issues. © 2012 Elsevier Ltd.
Wang Y.,CAS Institute of Psychology |
Yan C.,East China Normal University |
Yin D.-Z.,East China Normal University |
Fan M.-X.,East China Normal University |
And 3 more authors.
Schizophrenia Bulletin | Year: 2015
The current study sought to examine the underlying brain changes in individuals with high schizotypy by integrating networks derived from brain structural and functional imaging. Individuals with high schizotypy (n = 35) and low schizotypy (n = 34) controls were screened using the Schizotypal Personality Questionnaire and underwent brain structural and resting-state functional magnetic resonance imaging on a 3T scanner. Voxel-based morphometric analysis and graph theory-based functional network analysis were conducted. Individuals with high schizotypy showed reduced gray matter (GM) density in the insula and the dorsolateral prefrontal gyrus. The graph theoretical analysis showed that individuals with high schizotypy showed similar global properties in their functional networks as low schizotypy individuals. Several hubs of the functional network were identified in both groups, including the insula, the lingual gyrus, the postcentral gyrus, and the rolandic operculum. More hubs in the frontal lobe and fewer hubs in the occipital lobe were identified in individuals with high schizotypy. By comparing the functional connectivity between clusters with abnormal GM density and the whole brain, individuals with high schizotypy showed weaker functional connectivity between the left insula and the putamen, but stronger connectivity between the cerebellum and the medial frontal gyrus. Taken together, our findings suggest that individuals with high schizotypy present changes in terms of GM and resting-state functional connectivity, especially in the frontal lobe. © The Author 2014. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center.
Tse S.,University of Hong Kong |
Siu B.W.M.,Castle Peak Hospital |
Kan A.,University of Hong Kong
Administration and Policy in Mental Health and Mental Health Services Research | Year: 2013
Recovery has been adopted as either the national policy or guiding principle for reforming mental health services in many countries. Development and implementation of the concept of recovery is still in its infancy in most Asian countries, and Hong Kong is no exception. The present authors propose three strategies to guide the transformation of Hong Kong mental health services toward becoming more recovery-oriented. © 2011 The Author(s).