Testing an Incentive-Sensitisation Approach to Understanding Problem Slot-Machine Gambling Using an Online Slot-Machine Simulation

This study aims to test the application of the incentive-sensitisation theory to slot-machine gambling behaviour. The theory posits that for problem gamblers (PGs), gambling strengthens the response of motivational pathways in the mid-brain to gambling cues, eliciting strong wanting, independent of liking. Non-problem gamblers (NPGs) experience weaker changes to motivational pathways so liking and wanting remain associated. Hence, it is predicted that wanting to gamble will be greater than liking for PGs but there will be no difference for NPGs; wanting will be greater for PGs than for NPGs; and, wanting but not liking will predict whether PGs continue gambling, whereas both will predict this for NPGs. During gambling on an online simulated slot-machine, 39 PGs and 87 NPGs rated ‘liking’ and ‘wanting’. Participants played at least 3 blocks of 10–20 spins, and then had the option of playing up to 4 additional blocks; to continue playing they had to complete an effortful task, so that ‘number of blocks played’ acted as an additional indirect measure of wanting. Results supported hypotheses except on the indirect measure of wanting (the number of blocks played).     

The Role of International Municipal Cooperation in Housing the Developing World's Urban Poor: The Toronto-São Paulo Example

Increasingly, local governments in developing countries are entering into partnership arrangements with their counterparts in the developed world as part of an attempt to come to grips with problems associated with rapid urban expansion. As part of a preliminary investigation of the development-related impact of this little studied form of international municipal cooperation (IMC), this paper assesses the effectiveness of one particularly ambitious information and technology sharing arrangement struck by the cities of São Paulo, Brazil and Toronto, Canada. Specifically, the study focuses on an initiative -- referred to as the Integrated Operations (OI-Operações Interligadas) -- developed by the two cities to assist São Paulo in its efforts to facilitate public housing. Based upon the evidence -- collected over a four-year period (1993-1997) in both settings -- the paper suggests that IMC ventures of the type described can help deal with problems such as housing, and thus may well provide a new and cost effective mechanism for improving conditions generally in the world's less affluent urban agglomerations.     

Fringing trees may provide a refuge from prolonged drying for urban wetland invertebrates

Climate change is causing prolonged drying in many seasonal wetlands, including urban wetlands, potentially affecting aquatic invertebrates that take refuge in wetland sediment during dry periods and thereby threatening wetland biodiversity. We collected sediment from two habitats: open water (OW) and fringing trees (FT), in eight urban wetlands after seasonal inundation had ended. Both habitats are inundated during winter–spring and dry in summer–autumn. Each sediment sample was divided into subsamples. One set of subsamples were inundated in the laboratory to test the hypothesis that emerging invertebrate assemblages would differ between OW and FT sediments. Another set of subsamples was dried, stored for a year, and inundated to test the hypothesis that prolonged drying would reduce the abundance and taxa richness of emerging invertebrates. The composition of emerging invertebrate assemblages differed between habitats, with more amphibious species found in FT sediment. Invertebrate responses to prolonged drying and storage varied among species: for some, effects depended on habitat type, while others delayed emergence or showed no response. Microcrustacean abundance was unaffected by drying, suggesting that their productivity during refilling may resist drier water regimes. Surface temperatures of dry sediment are cooler beneath FT, and this sediment has higher organic matter, holds more water and is less dense than OW sediment; and FT sediment remained cooler than OW sediment in the laboratory, despite the absence of shading. Fringing trees may therefore provide a refuge for some freshwater invertebrates relying on dormant stages in the sediment to survive drying in urban wetlands.     

Suicidal Thoughts/Behaviors in Sexually Abused Children

This study examined the frequency of suicidality based on self-report and parent report in 430 sexually abused outpatient youth ages 3 to 17. Thirty-four percent of youth experienced suicidal ideation or behavior. However, when both parent and child completed measures, the rate of suicidality increased to 45.3%. The prevalence of suicidal thoughts and behavior was not higher based on relationship to the perpetrator, race, or previous placement outside the home. Suicidal youth rated themselves as more depressed, anxious, and angry on self-reports. Child self-reports of post-traumatic stress disorder were greater among the suicidal youth. Parent reports of depression and post-traumatic stress disorder were greater among suicidal youth. A logistic regression model including Trauma Symptom Checklist for Children Depression and Anger scores correctly classified 74.2% of suicidal and nonsuicidal children and adolescents, but not self-criticism, was predicted by depression and anger. These findings support the need for formal multi-informant evaluations of suicidality in sexually abused youth.     

Perfectionism and binge drinking in Canadian students making the transition to university

Objective: In September 2005, the authors explored the relationship between perfectionism and binge drinking in a sample of first-year college students. Participants: The authors recruited 207 first-year college students (76 men, 131 women) to complete the Multidimensional Perfectionism Scale (MPS) and Frost Multidimensional Perfectionism Scale (F-MPS). Methods: The authors divided participants into 3 groups on the basis of frequency of binge drinking and conducted multivariate analyses of variance to compare the binge drinking groups on the 3 MPS subscales and the 5 F-MPS subscales. Results: The group with 2 or more binge drinking episodes in the past 2 weeks had higher levels of parental criticism and lower levels of self-oriented perfectionism, but they did not have lower scores on a measure of personal standards. Conclusions: These findings suggest that certain perfectionists binge drink in response to harsh parental treatment and that, at least initially, the pursuit of extreme standards of personal perfection is incompatible with binge drinking. The authors discuss the theoretical and practical implications of these findings.     

You make me sick: marital quality and health over the life course

We work from a life course perspective and identify several reasons to expect age and gender differences in the link between marital quality and health. We present growth curve evidence from a national longitudinal survey to show that marital strain accelerates the typical decline in self-rated health that occurs over time and that this adverse effect is greater at older ages. These findings fit with recent theoretical work on cumulative adversity in that marital strain seems to have a cumulative effect on health over time-an effect that produces increasing vulnerability to marital strain with age. Contrary to expectations, marital quality seems to affect the health of men and women in similar ways across the life course.