ABSTRACT
Background: Sex is a psychobiological factor that is important in the process of emotion.This study determines the effect of sex on the electropsychological process of various intensities ofemotional arousal.Methods: In the Event-related Potential (ERP) session, electroencephalographic (EEG)data was recorded for 90 participants, 60% of whom were females. The participants responded to30 universal emotional pictures, randomly chosen from the International Affective Picture System(IAPS), which were classified as invoking high, moderate, and low intensity of emotional arousal.Results: From the analysis of variance of two-way mixed design, the interaction betweensex and emotional intensity was observed in the occipital regions (O2), indexed by the amplitudeof P300 and N200 components. Males exhibited higher amplitude of P300 and N200 components(in the occipital region) as responded to high and low emotional arousal stimuli than females.Conclusion: Sex is a fundamental factor that modulates psychological states in reaction toemotional stimuli.
ABSTRACT
Background: Previous studies have revealed that self-related tasks (items) receive more attention than non-self-related, and that they elicit event-related potential (ERP) components with larger amplitudes. Since personality has been reported as one of the biological correlates influencing these components, as well as our behavioural differences, it is important to examine how it affects our self-consciousness in relation to tasks of varied relevance and the neurological basis. Methods: A total of 33 male and female undergraduate Malaysian medical students of Universiti Sains Malaysia (USM) participated in the study. The participants were divided into two groups, Ambivert (n = 18) and Extravert (n = 15) groups, using the USM personality inventory questionnaire. In the ERP experiment, squares containing standard stimuli of any word other than self and non-self-related nouns (e.g., Bola, Gigi, Anak, etc.; in English: Ball, Teeth, Kids, etc., respectively), those containing self-related pronouns (Saya, Kami or Kita; in English: I, Us or We, respectively), and non-self-related pronouns (Dia, Anda or Mereka; in English: He/She, You or They, respectively), were shown 58%, 21% and 21% of the time, respectively, in a three-stimulus visual oddball paradigm. All words were presented in Bahasa Melayu. The participants were instructed to press 1 for self and 2 for non-self, and ignore standard stimuli. Results: Comparison of both N200 and P300 amplitudes for self-related and non-selfrelated pronouns in the Extravert group revealed significant differences at seven electrode sites, with self-related having larger amplitude at anterior electrodes and less at posterior. This was not seen in the Ambivert group. Conclusion: The present study suggests that self-relevant pronouns are psychologically more important to extraverts than to ambiverts; hence, they have more self-awareness. This may be due to large amount of dopamine in the brains of extraverts, which is more concentrated in the frontal lobe.
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Objective: Literatures on factors influencing performance of the Stroop interference have been elusive on coping styles. Past investigations of coping influence on Stroop test have been indirect and inconclusive due to variability of multidimensional coping models and application of different Stroop test. The concept of constricted versus flexible or broad cognitive style have linked personality and coping styles to Stroop performance. The objective of this study was to determine the associations of coping styles with Stroop resistance towards interference (Stroop RI) and subsequently determine the predictors of Stroop performance. Methods: This was a cross-sectional community research design study with purposive sampling. In this study, the self-administered Brief COPE inventory questionnaires and Stroop Test were performed among 205 undergraduate medical students. Results: Findings revealed that behavioural disengagement (r=-0.361), dysfunctional coping (r=-0.355), self-blame (r = 0.222), and substance abuse (r = -0.173) showed negative correlation and proven strong association with Stroop RI. Further multiple regression analyses identified behavioural disengagement (R2 = 0.13), and dysfunctional coping (R2 = 0.024) as significant predictors for interference. Conclusion: Coping styles have implication on Stroop test exhibited in varied cognitive styles. Integrating coping styles factor on Stroop test has glimpsed the future direction of other neuropsychological assessment batteries on the importance of profiling individualistic baseline norms.
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Objective: The involvement of families in assisting health professionals in providing care for their family members who suffer a stroke during hospitalization is common in Malaysia. Family caregivers are accountable in providing for the first-ever stroke survivor’s needs, including maintaining functional improvements gained in rehabilitation and the long-term well-being of the stroke survivors. The objective of this study was to determine the predictors of life satisfaction among family caregivers of hospitalized first-ever stroke patients. Methods: This was a cross-sectional community research design study with purposive sampling. It involved 102 family caregivers of hospitalized first-ever stroke patients of two tertiary hospitals in Kelantan. The Bakas Caregiving Outcomes Score (BCOS) was used to measure life satisfaction. Multiple linear regression was used to determine the predictors of life satisfaction. Results: Out of 102 respondents, 21 were males and 81 were females with age range of 16 to 76 years. Significant predictors of life satisfaction of caregivers while caring for their hospitalized first-ever stroke family members were caregivers’ health (β: -2.875, 95%CI: -5.725, -0.025, p = 0.048), patients’ age (β: - 4.251, 95% CI: - 6.379, -2.123, p<0.001) and educational status of patients (β: 3.176, 95% CI: 1.083, 5.269, p = 0.003). Conclusion: This study highlighted predictors of life satisfaction among caregivers while caring for their hospitalized family members with stroke. The results may provide a basis for developing a support program for the family caregivers of hospitalized stroke patients in preparation for their continuing caregiving role at their homes. ASEAN Journal of Psychiatry, Vol. 15 (2): July – December 2014: 164-175.
ABSTRACT
This study validates The Malay Version of The Inventory of Socially Supportive Behaviour. Methods: The psychometric properties of the ISSBMalay Version were examined on sixty-eight women who were Malay native speakers and diagnosed with breast cancer. Respondents answered the questionnaire at three weeks and ten weeks following surgery for breast cancer. Results: The Malay Version of ISSB showed excellent internal consistency (Cronbach’s alpha=0.96). Test-retest Intraclass Correlation Coefficient (ICC) was 0.03. Small mean differences were observed at test-retest measurement with Effect Size Index 0.18. Conclusion: The Malay Version of the ISSB could be an appropriate tool to measure the supportive behavior of the Malaysian population.