Optimistic bias for negative and positive events.

Presents results of an investigation into the occurrence of optimistic bias in relation to both positive and negative events, using absolute judgements to assess perceived risk for each of six events. Participants were asked why they offered different ratings for themselves and for others. The results showed that optimistic bias is a pervasive phenomenon that occurs for both positive and negative events. It occurred for all six events when comparisons were made with an unspecified person of the same age and sex, and occurred for three of six events when comparisons were made with the same-sex best friend. Participants could provide information about their own behaviour that they felt justified their positive outlook; however, they implicitly assumed that the comparison target did not engage in the same behaviour. Concludes that risk-reduction education needs to be made personally relevant to the target audience.

"I will start treatment when I think the time is right":HIV-positive gay men talk about their decision not to access antiretroviral therapy.

In a qualitative study, 20 HIV-infected Australian gay men were interviewed about their decision not to access antiretroviral drug therapy. The main reasons given for the decision were fear of side effects; fear of long-term damage to body organs; the inconvenience of the treatment regimens; belief that the regimen's demands would be a threat to morale; and belief that there was no reason to start therapy in the absence of AIDS-related symptoms. Actions taken by the men to monitor and maintain their health included seeing a doctor regularly; having regular T-cell and viral load tests; and trying to maintain a positive outlook by not letting HIV/AIDS 'take over' their lives. Almost half the men considered they had been subjected to unreasonable pressure to access therapy and there was considerable pride at having resisted this pressure. The findings suggest that the men disagreed with the biomedical model for managing HIV/AIDS only on the question of if and when to access therapy. They also suggest that underlying the men's dissent from the biomedical model was a different mode of thinking than is required by the model: while the model demands thinking that is abstract, the men focused strongly on factors close to the 'here and now' of immediate experience. The practical implications of the findings are explored.

Body image, strategies to change muscles and weight, and puberty. Do they impact on positive and negative affect among adolescent boys and girls?

The purpose of this study was to examine the impact of strategies to both decrease weight and increase muscle tone on negative (depression, anxiety) and positive affect among adolescent males and females. The respondents were 1185 adolescents (587 males, 598 females) who were enrolled in grades 7 and 9 (mean age for MALES=13.22 years; mean age for FEMALES=13.21 years). Respondents completed the Body Image and Body Change Inventory that assessed body image satisfaction, body image importance, body change strategies to decrease weight, body change strategies to increase muscle tone, and food supplements. Respondents also completed the Pubertal Development Scale, the depression and anxiety scales of the Depression Anxiety and Stress Scale, and the positive affect items from the Positive and Negative Affect Scale. Structural equation modelling was used to determine how body satisfaction and importance, body change strategies, and puberty impacted on depression, anxiety, and positive affect. The results demonstrated that for both boys and girls, there was a strong association between body change strategies and negative affect. For boys, body dissatisfaction did not predict negative affect, although this was a strong predictor for girls. Body change strategies did not strongly predict positive affect for either boys or girls, although body image satisfaction was a strong predictor for both genders. The implications of these findings for obtaining a better understanding of the role of pubertal development, body image, and body change strategies in predicting positive and negative affect among adolescent males and females are discussed.

Maintaining life satisfaction: the role of positive cognitive bias

Recent research into population standards of life satisfaction has revealed a remarkable level of uniformity, with the mean values for Western populations clustering at around three-quarters of the measurement scale maximum. While this seems to suggest the presence of a homeostatic mechanism for life satisfaction, the character of such a hypothetical device is uncertain. This paper proposes that well-being homeostasis is controlled by positive cognitive biases pertaining to the self. Most particular in this regard are the positive biases in relation to self-esteem, control and optimism. Past controversies in relation to this proposition are reviewed and resolved in favour of the proposed mechanism. The empirical data to support this hypothesis are discussed in the context of perceived well-being as an adaptive human attribute.

The minimum moral content of law : a critique of Hart's descriptive theory of positive and natural law

Review of H.L.A. Hart's account of the minimum moral content of law - assesses its consistency with the methodology provided in his description of the focal meaning or central case of law - particular focus is Hart's consideration of the ultimate end of man - how difficulties faced by Hart's account of the minimum moral content of law can be overcome.

Positive psychology and the demise of defamation

Defamation is one of the more complex and fluid areas of the law and varies considerably across the Australian jurisdictions. There are moves to unify defamation law. The threshold issue that is raised in any such process is whether there is in fact a justification for continuation of defamation law. Recent advances in happiness studies and positive psychology suggest that the chief interest protected by defamation law, reputation, is over-rated and is not in fact conducive to human well-being. What others think of us is not relevant to our well-being. Anecdotally it seems that people spend much time and energy in a bid to impress others in the hope that they will grow in the estimation of others and the world at large. Hence, the results of the studies into human well-being so far as reputation is concerned may appear counter-intuitive. Nevertheless, the studies are far more convincing than lay assumptions. People are often wrong about what is in their interests. This is recognised in the concept of regret. Individuals yearn for some things, but sometimes when they acquire them they discover that the journey was wasted. Reputation is one such thing. Defamation law perpetuates the myth that reputation is intrinsically important. Defamation should be abolished. In its place, a new cause of action should be introduced whereby damages are awardable for misleading and deceptive communications which cause damage to the individual who is the subject of the communication. This cause of action should be modelled on the misleading and deceptive conduct provisions of the Trade Practices Act 1974 (Cth).

Season-ticket holder satisfaction and sponsor-related behaviour: evidence of a positive relationship

Fan attention and response to sponsorship is affected by a range of variables, including the duration of sponsorship and fan commitment to the sporting organisation. The results of surveys of the members of six Australian Football League clubs indicated that there is a positive relationship between the satisfaction levels of season-ticket holders and their orientation towards club sponsors' products and brands.

Transferring goodwill : are positive attitudes towards the event related to positive results for the sponsor?

The transfer of positive brand image from the sponsored event to the sponsor is now one of the main reasons cited for engaging in event sponsorship activity. Beyond just simple brand associations though, it has been recognised that patrons often feel "goodwill" towards certain sponsored events and these feelings could also be transferred to enhance sponsorship outcomes. This paper reports on an email survey of over 300 patrons of a non-profit Arts Festival, examining whether "goodwill" can influence sponsorship effectiveness. Specifically, the focus here is on the relationship between positive attitudes toward the event and sponsorship outcomes. The findings suggest that satisfaction with the event is correlated positively with sponsor recall but not recognition. Those with higher degrees of "goodwill" towards the event did have more positive attitudes towards the sponsor and were more likely to recall and recognise sponsors correctly.

Applying both positive and negative selection to supervised learning for anomaly detection

This paper presents a novel approach of applying both positive selection and negative selection to supervised learning for anomaly detection. It first learns the patterns of the normal class via co-evolutionary genetic algorithm, which is inspired from the positive selection, and then generates synthetic samples of the anomaly class, which is based on the negative selection in the immune system. Two algorithms about synthetic generation of the anomaly class are proposed. One deals with data sets containing a few anomalous samples; while the other deals with data sets containing no anomalous samples at all. The experimental results on some benchmark data sets from UCI data set repertory show that the detection rate is improved evidently, accompanied by a slight increase in false alarm rate via introducing novel synthetic samples of the anomaly class. The advantages of our method are the increased ability of classifiers in identifying both previously known and innovative anomalies, and the maximal degradation of overfitting phenomenon.

MRI-negative PET-positive temporal lobe epilepsy (TLE) and mesial TLE differ with quantitative MRI and PET: a case control study

Background: 'MRI negative PET positive temporal lobe epilepsy' represents a substantial minority of temporal lobe epilepsy (TLE). Clinicopathological and qualitative imaging differences from mesial temporal lobe epilepsy are reported. We aimed to compare TLE with hippocampal sclerosis (HS+ve) and non lesional TLE without HS (HS-ve) on MRI, with respect to quantitative FDG-PET and MRI measures.

Methods: 30 consecutive HS-ve patients with well-lateralised EEG were compared with 30 age- and sex-matched HS+ve patients with well-lateralised EEG. Cerebral, cortical lobar and hippocampal volumetric and co-registered FDG-PET metabolic analyses were performed.

Results: There was no difference in whole brain, cerebral or cerebral cortical volumes. Both groups showed marginally smaller cerebral volumes ipsilateral to epileptogenic side (HS-ve 0.99, p = 0.02, HS+ve 0.98, p < 0.001). In HS+ve, the ratio of epileptogenic cerebrum to whole brain volume was less (p = 0.02); the ratio of epileptogenic cerebral cortex to whole brain in the HS+ve group approached significance (p = 0.06). Relative volume deficits were seen in HS+ve in insular and temporal lobes. Both groups showed marked ipsilateral hypometabolism (p < 0.001), most marked in temporal cortex. Mean hypointensity was more marked in epileptogenic-to-contralateral hippocampus in HS+ve (ratio: 0.86 vs 0.95, p < 0.001). The mean FDG-PET ratio of ipsilateral to contralateral cerebral cortex however was low in both groups (ratio: HS-ve 0.97, p < 0.0001; HS+ve 0.98, p = 0.003), and more marked in HS-ve across all lobes except insula.

Conclusion: Overall, HS+ve patients showed more hippocampal, but also marginally more ipsilateral cerebral and cerebrocortical atrophy, greater ipsilateral hippocampal hypometabolism but similar ipsilateral cerebral cortical hypometabolism, confirming structural and functional differences between these groups.

Hippocampal deformation mapping in MRI-negative PET-positive temporal lobe epilepsy

Objectives: To compare hippocampal surface structure, using large deformation high dimensional mapping (HDM-LD), in subjects with temporal lobe epilepsy (TLE) with (HS+ve) and without (HS−ve) hippocampal sclerosis.

Methods: The study included 30 HS−ve subjects matched with 30 HS+ve subjects from the previously reported epilepsy patient cohort. To control for normal right–left asymmetries of hippocampal surface structure, subjects were regrouped based on laterality of onset of epileptic seizures and presence of HS. Gender ratio, age, duration of epilepsy and seizure frequency were calculated for each of the four groups. Final HDM-LD surface maps of the right and left TLE groups were compared to define differences in subregional hippocampal involvement within the groups.

Results: There were no significant differences in comparisons of the left TLE (left HS−ve compared with HS+ve) or right TLE (right HS−ve compared with HS+ve) groups with respect to age, duration of epilepsy or seizure severity scores. HDM-LD maps showed accentuated surface changes over the lateral hippocampal surface, in the region of the Sommer sector, in the hippocampi affected by HS. However, HS−ve hippocampi showed maximal surface changes in a different pattern, and did not involve the region of Sommer sector.

Conclusion: We conclude that differences in segmental volume loss between the HS−ve and HS+ve groups are suggestive that the underlying pathophysiology of hippocampal changes in the two groups is different, and not related to chronic seizure duration or severity.

Does the Triple P-Positive Parenting Program provide value for money?

Objective: The aim of the present study was to investigate the economic case for the implementation of the Triple P-Positive Parenting Program on a population basis in Queensland, Australia, in order to reduce the prevalence of conduct disorder in children. Method: Threshold analysis was undertaken together with a limited cost-effectiveness analysis. Results: The Triple P-Positive Parenting Program is a dominant intervention; that is, it costs less than the amount it saves, until the reduction in prevalence falls below 7% where net costs become positive. Conclusions: Triple P is likely to be a worthwhile use of limited health funds. The economic case is promising, but further research is required to confirm the study results.

Being there: how teachers of students facing adversity promote positive relationships

While it is said that building positive relationships between students and teachers promotes both student emotional wellbeing and learning, the literature currently provides few clues on how to go about building such relations (and the priorities for action) which are grounded in the research. Interviews and a focus group were used to explore the perspectives of experienced teachers in promoting wellbeing among students facing adversity (i.e. prolonged difficulties and misfortune, such as poverty and issues associated with being a refugee). The results showed that teachers who nurtured relationships with students facing adversity meet considerable challenges. Priority challenges included grappling with unfamiliar student values; facing their own and other staff judgements; boundary issues; schools becoming refuges in communities under strain; and trying to still care when workplace changes appeared to work against positive teacher–student (TS) relationships. The paper concludes that such relationships are a site of tension, contradiction and intensity. Nevertheless, for these teachers, the specific challenges in relationships laid the foundations for meaningful student learning and mental health promotion.