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Biomedical subjects

A H Winefield

Publications and source records attributed to A H Winefield.

At least 19 recordsLinked to original sources
PubMed2000

Predictors of irrational thinking in regular slot machine gamblers.

Previous research has suggested that irrational thinking may play a central role in the maintenance of behavior in slot machine gambling (M. B. Walker, 1992b). The present study is an evaluation of the validity and predictors of irrational thinking in a sample of regular gamblers (N = 20) drawn from the general community. The results were generally consistent with earlier findings; 75% of gambling-related cognitions were found to be irrational. Irrationality was unrelated to the amount of money lost or won during sessions but was positively related to risk taking. The most common irrational cognitions included false beliefs concerning the extent to which outcomes could be controlled or predicted and the attribution of human qualities (personification) to gambling devices. Gender comparisons showed that women were more likely than men to personify the machines. The validity of the speaking-aloud approach and suggestions for future research are discussed.

Adult↗
PubMed2000

Lymphocyte 5'-ectonucleotidase: an indicator of oxidative stress in humans?

Lymphocytic 5'-ectonucleotidase (NT) activity previously has been shown to be reduced in patients with a high pro-oxidant state. This study shows that NT activity is decreased in vitro by exposure to superoxide anions and that ascorbate protects against this effect. Also, a putative high pro-oxidant state in vivo, as indicated by low tissue ascorbate levels, resulted in a significant decrease in NT which an antioxidant intake normalized. These results taken together suggest that NT is sensitive to superoxide anion and that it may be a good marker of a pro-oxidant state in humans.

5'-Nucleotidase↗
PubMed1999

Predicting work stress compensation claims and return to work in welfare workers.

Occupational stress is prevalent in work areas in which there is high contact with distressed or dependent members of the public. However, little is known about the prediction and management of stress-related compensation claims, which can be expensive for employers. The authors interviewed all staff members of a large public sector welfare agency who had made a compensation claim for work-related stress during a 12-month period (N = 19) and obtained in-depth information from 16 of the 17 who were still available. A clear relationship was found between type of stress precipitant and length of stress-related leave, suggesting that the organizational response to specific stressful incidents was much more effective than its response to chronic work stressors. Demographic data for all 19 claimants showed that they had taken twice as many days of sick leave as the organizational average in the year preceding their claim. There are important implications for personnel management practices that may reduce and prevent work stress for vulnerable workers.

Australia↗
PubMed1998

The effect of depression in an animal model on 5'-ectonucleotidase, antibody production, and tissue ascorbate stores.

The learned helplessness model of depression in rats was tested. It was hypothesized that 5'-ectonucleotidase (NT), ascorbate, and antibody to sheeps' red blood cells (SRBC) are significantly reduced in rats who experienced uncontrollable shock, compared with rats who did not receive shock or could control it. During a learned-helplessness manipulation, antibody response to SRBC and NT values were unaffected. However, tissue ascorbate stores fell significantly, by 20-30%. The lack of effects on antibody responses and NT are discussed n terms of the acute nature of the stressor used in this model, as opposed to the more chronic stressors that have occurred in the human model.

5'-Nucleotidase↗
PubMed1998

A test of the demand-control/support model of work stress in correctional officers.

The demand-control/support model of work stress was tested in a sample of 419 correctional officers. The results suggest a link between certain work characteristics (high demands, low control, and low support) and strain symptoms (e.g., psychological distress, job dissatisfaction) as well as with negative affectivity (NA). On the other hand, other job characteristics (high demands and high control) were associated with positive behavioral outcomes (seeking feedback, looking at work as a challenge). Workers in high-isolation strain jobs with the greatest work exposure showed higher levels of strain and NA than workers with less experience working in the same job. Results suggest that work experience may affect long-term personality evolution. It is concluded that studies that control for the nuisance aspects of trait NA may underestimate the impact of the work environment on strain.

Adaptation, Psychological↗
PubMed1994

Affective reactions to employment and unemployment as a function of prior expectations and motivation.

Self-esteem and depressive affect measures were obtained from 809 employed and 137 unemployed young people and compared with at-school measures taken three years earlier. Scores were analysed in relation to at-school expectations of obtaining employment and expressed importance of getting a job. In both employed and unemployed groups, low prior expectations of getting a job led to a greater increase in self-esteem than high prior expectations. Among the unemployed, those who had rated getting a job as relatively important showed a greater increase in depressive affect than those who had rated getting a job as relatively less important.

Adolescent↗
PubMed1993

Psychological distress, work attitudes and intended year of leaving school.

Recent studies in both Australia and the U.K. have shown high levels of psychological distress and anxiety in secondary school pupils, increasing over the final three years of school. Indeed, the levels observed in final year pupils have been just as high as those observed in unemployed young people. It has been suggested that the discrepant findings in some longitudinal studies reported during the past few years might be due to the inappropriate use of at-school baseline measures, where disproportionate numbers of pupils at different levels could have affected the conclusions. In response to this suggestion data are reported from a longitudinal study of school leavers, in which 1980 at-school measures were analysed as a function of year level and intended year of leaving. The findings gave no support to the hypothesis that stress level increased from over the last three years, and therefore the use of baseline measures was vindicated. It was concluded that a decade of sustained high youth unemployment is the reason why those about to leave school seem prone to greater stress and anxiety than was the case ten years ago.

Adolescent↗
PubMed1992

Psychological correlates of the level of alcohol consumption in young adults.

OBJECTIVE: To assess the psychological condition of young adults who drank no alcohol, moderate, or excessive amounts of alcohol. DESIGN: Subjects from a longitudinal study of the school-to-work transition supplied information by postal questionnaire, and others matched for age were interviewed. PARTICIPANTS: A sample of adults of average age 24 years. The 483 in the longitudinal study had been students at 12 metropolitan high schools in 1980, and had been followed annually from then until 1988; the 111 who were interviewed were mature-aged university students. Sex ratios and the proportion employed were similar in the two samples. MAIN OUTCOME MEASURES: The General Health Questionnaire was used to measure psychological disturbance in both samples, and alcohol consumption was measured by self-report in terms of number of glasses of beer, wine, spirits and fortified wine taken during the preceding week. RESULTS: Higher levels of disturbance were shown by men who drank excessively in the first study, and who abstained from alcohol in the second study. The latter result was related to the poorer health of abstainers. Women showed no psychological differences according to level of alcohol consumption. CONCLUSIONS: The inconsistent results for men in the two studies suggest that research methodology influences results in ways that are important for researchers in this field to take into account. The lack of disturbance in moderate drinkers of both samples indicates the social acceptability of responsible alcohol consumption in Australia, and supports efforts to educate the public and their medical advisors so that well-informed decisions can be made about alcohol use.

Adult↗
PubMed1992

Psychological attributes of young adult smokers.

To study the psychological aspects of cigarette-smoking in community adults, we examined longitudinal data from a sample of young people (from age 15 to 23 years). Questions on smoking behavior had been asked during the last five years of the study, and information on self-esteem, depressive affect, negative mood, hopelessness, psychological disturbance, locus of control, social alienation and health was also available. Current smokers in the last year of the study had differed from nonsmokers nine years previously by having more external locus of control and now were less likely to report their health as excellent. Most smokers also drank alcohol, but cigarette consumption did not differ for drinkers and nondrinkers. Contrary to expectations, current smokers showed no distinctive psychological attributes, and those who started or stopped smoking were similarly undistinctive in psychological terms. Results suggest that efforts to stress the self-destructive or antisocial nature of tobacco use have not been accepted by the smokers in this age group (M = 23.6 yr.).

Adult↗
PubMed1991

Suicidal ideation: its enduring nature and associated morbidity.

A longitudinal study between 1980 and 1988 of school leavers entering adulthood examined suicidal ideation 4 and 8 years after an initial battery of psychological tests. The report of suicidal ideation during their lives was significantly associated with measures of depression, self-esteem and locus of control 8 years previously. It was also associated with those measures as well as anomie, hopelessness and scores on the General Health Questionnaire 4 years previously. These associations were not as strong for subjects whose suicidal ideation had been present in the most recent 6 months, or for those who acknowledged having attempted suicide. No fewer than 40% of subjects who acknowledged suicidal ideation when examined in 1984 denied ever having had suicidal ideation during their lives when re-examined in 1988. This raises doubts about the validity of such studies. Although these findings provide data that confirm the enduring nature of suicidal ideation and its continuing morbidity, they do not give confidence that any screening of schoolchildren could actually predict those who will attempt suicide. Such studies cannot replace full clinical assessment of individual suicidal subjects.

Adolescent↗
PubMed1991

The stability of attributional style and its relation to psychological distress.

A group of yound adults completed the Attributional Style Questionnaire and measures of depressive affect and hopelessness on two occasions separated by a time interval of three years. Attributional style was demonstrated to be relatively stable over this time period, and was correlated with the measures of psychological well-being. Specifically, those who scored highest on depressive affect and hopelessness attributed good outcomes more externally and less stably, and attributed bad outcomes to relatively more stable and global causes. In contrast to the hopelessness model of depression, however, multiple regression analyses showed that depressive attributions were not antecedent to increased psychological distress; nor were they a consequence. Furthermore, negative life-events did not contribute to the prediction. It was concluded that the data are most consonant with Brewin's (1985) symptom model, in which depressive attributions are a concomitant or symptom of depression but have no causal impact on the onset or course of the disorder.

Adaptation, Psychological↗
PubMed1991

The psychological impact of unemployment and unsatisfactory employment in young men and women: longitudinal and cross-sectional data.

Data are presented from the seventh wave of a longitudinal study of school-leavers that commenced in 1980. Four groups were compared: satisfied employed, dissatisfied employed, unemployed and full-time tertiary students. The groups differed initially with respect to only one background variable, teacher-rated academic potential, and did not differ on any of the psychological measures of well-being. In general, the unemployed and dissatisfied employed groups displayed poorer psychological well-being than the satisfied employed and student groups on a range of measures. The longitudinal data suggested that this was because the two disadvantaged groups showed smaller improvements than the others, rather than any deterioration. The results also suggested that for the males unemployment was worse than unsatisfactory employment, but that for the females unsatisfactory employment was worse than unemployment.

Adolescent↗
PubMed1990

Length of unemployment and psychological distress: longitudinal and cross-sectional data.

Data are presented from the second stage of a longitudinal study of unemployed young people, when their ages ranged from 19 to 24 yr. Data from the first stage, when their ages ranged from 16 to 20 yr, had provided support for a curvilinear hypothesis relating psychological distress or affective well-being, to unemployment duration. According to the curvilinear hypothesis, distress peaks at around 6 months and declines thereafter. In the present study three target groups were distinguished: those unemployed for 3 months or less, those unemployed from 4 to 8 months, and those unemployed for 9 months or more. On most of the dependent measures the 3 month, and 4-8 month groups did not differ, but the 9 month group was significantly worse off than either. It is concluded that the relations between length of unemployment and psychological distress, or well-being, are different in teenagers and young adults. Possible explanations for the differences are discussed.

Adult↗
PubMed1990

A comparison of the affective well-being of young and middle-aged unemployed men matched for length of unemployment.

A sample of young unemployed men (mean age: 21.7 years) was compared with a sample of middle-aged unemployed men (mean age: 47.8 years) on a range of psychological and demographic/background variables. The groups were fortuitously matched for length of unemployment, with the average duration of current unemployment being 20.0 months for the young group and 17.9 months for the middle-aged group. The middle-aged group displayed poorer mental health, less life satisfaction and greater work involvement than the young group but the groups did not differ in self-esteem. For the young group the best predictor of well-being was perceived adequacy of social support and for the middle-aged group the best predictor was participation in leisure activities involving other people. It was concluded that the poorer mental health displayed by middle-aged unemployed men is not explained by the fact that they have, in general, been unemployed for longer than their young counterparts. In both groups, the best predictor of affective well-being was a measure (albeit a different measure) of social support. These conclusions can only be regarded as tentative, however, because of the small sample sizes. Implications of these findings for community support programmes for both young and middle-aged unemployed groups are discussed.

Adaptation, Psychological↗
PubMed1989

Psychological concomitants of tobacco and alcohol use in young Australian adults.

Nineteen-year-old subjects in an Australian community sample (N = 1028) reported their tobacco and alcohol use of the previous week, and 598 of them gave similar information 3 years later. The paper examines the demographic (sex, ethnic background, and occupational status) and psychological characteristics (hopelessness, self-esteem, locus of control, and social alienation) of tobacco and alcohol users and nonusers at the ages of 19 and 22, and also of subjects who started or stopped consumption of these drugs over the three year period. Smoking at 22, and particularly having started to smoke between 19 and 22, seems to be associated with feelings of demoralization and social alienation, as is relatively heavy drinking. Moderate drinking of alcohol is however normative for the well-adjusted and socially well-integrated young adult in this culture. The findings imply a need for rather different health-promotion messages related to tobacco and to alcohol.

Adaptation, Psychological↗
PubMed1989

Suicidal ideation in a young adult population.

Depending on the manner in which the data were interpreted, as many as 17.5% of women and 20.2% of men, or as few as 3.0% of women and 3.3% of men in a young Australian adult population reported some degree of suicidal ideation in the few weeks prior to testing. Using a suicidal ideation score derived from the General Health Questionnaire (GHQ), 11.7% of men and 9.7% women could be considered to have suicidal ideation. These findings and the diversity of results from other studies emphasize the need for standardized methods of assessment of suicidal ideation. The GHQ could be usefully employed for this purpose, particularly as it is widely used and further analysis of existing data could provide valuable comparisons.

Adolescent↗
PubMed1989

The General Health Questionnaire: reliability and validity for Australian youth.

General Health Questionnaire (GHQ) results are given for a large (N = 1013) sample of South Australian young people (average age 19.6 years), to compare the usefulness of the 12-, 28-, and 30-item forms of the GHQ. Internal reliabilities are generally adequate and the Likert scoring method produces significant correlations with psychological measures such as self-esteem. The case-prevalence rate using the binary scoring method was comparable with other studies, but misclassification rates were unacceptably high when DSM-III Axis I diagnosis was used as the criterion for the presence of any psychiatric disorder.

Adolescent↗