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Risk-taking Behaviour (risk-taking + behaviour)
Selected AbstractsFood abundance affects both morphology and behaviour of juvenile perchECOLOGY OF FRESHWATER FISH, Issue 2 2008J. Borcherding Abstract,,, Behaviour and morphology were both shown to differ between 1+ perch from two lakes that in earlier studies showed differences in size-specific predation risk. As the level of nourishment is known to affect behaviour and morphology, we fed perch of the two lakes in tanks for 40 days with two food levels, to study whether observed differences remain stable with changes in food availability. The perch fed in excess grew significantly, while the perch at the low food conditions lost weight, clearly indicating undernourishment. In aquarium experiments, the starved perch from both lakes were much bolder in the trade-off between foraging and predator avoidance than their well-fed conspecifics. In addition, the shape of perch differed significantly between feeding treatments. At low food levels perch got a more slender body, while at high food levels they developed a deeper body and a relatively smaller head. Independent of feeding level, the comparison between the two lakes revealed a clearly deeper body and a larger head area for one population, a shape difference that remained stable after the feeding period. The results give evidence that the level of nourishment is an important factor that quickly alters risk-taking behaviour. In body morphology, however, more stable shape characteristics must be distinguished from more flexible ones. Consequently, the level of nourishment is a potential factor that may quickly hide other proximate cues and must be considered attentively in studies, in which shape changes and behaviour are related to environmental factors like diet, predation pressure or habitat diversity. [source] What Do Data Say About Monetary Policy, Bank Liquidity and Bank Risk Taking?ECONOMIC NOTES, Issue 2 2007Marcella Lucchetta This paper tests empirically the linkage between banks' investment and interbank lending decisions in response to interest rate changes. We draw conclusions for the monetary policy, which uses the interest rate as its main tool. Across European countries we find that the risk-free (i.e. monetary policy) interest rate negatively affects the liquidity retained by banks and the decision of a bank to be a lender in the interbank market. Instead, the interbank interest rate has a positive impact on these decisions. We also find that banks who lend show less risk-taking behaviour and tend to be smaller than those who are borrowers. Most importantly, the risk-free interest rate is positively correlated with loans investment and bank risk-taking behaviour. [source] Drug use patterns and mental health of regular amphetamine users during a reported ,heroin drought'ADDICTION, Issue 7 2004Amanda Baker ABSTRACT Aims The present study extends the findings of a pilot study conducted among regular amphetamine users in Newcastle, NSW, in 1998. It compares key features between current participants in a state capital city (Brisbane) and a regional city (Newcastle) and between the 1998 and current Newcastle sample. Design Cross-sectional survey. Setting Brisbane and Newcastle, Australia. Participants The survey was conducted among 214 regular amphetamine users within the context of a randomized controlled trial of brief interventions for amphetamine use. Measurements Demographic characteristics, past and present alcohol and other drug use and mental health, treatment, amphetamine-related harms and severity of dependence. Findings The main findings were as follows: (i) the rate of mental health problems was high among regular amphetamine users and these problems commonly emerged after commencement of regular amphetamine use; (ii) there were regional differences in drug use with greater accessibility to a wider range of drugs in a state capital city and greater levels of injecting risk-taking behaviour outside the capital city environment; and (iii) there was a significant increase in level of amphetamine use and percentage of alcohol users, a trend for a higher level of amphetamine dependence and a significant reduction in the percentage of people using heroin and benzodiazepines among the 2002 Newcastle cohort compared to the 1998 cohort. Conclusions Further longitudinal research is needed to elucidate transitions from one drug type to another and from recreational to injecting and regular use and the relationship between drug use and mental health in prospective studies among users. Implications Intervention research should evaluate the effectiveness of interventions aimed at: preventing transition to injecting and regular use of amphetamines; toward reducing levels of depression among amphetamine users and interventions among people with severe psychopathology and personality disorders; and toward reducing the prevalence of tobacco dependence among amphetamine users. [source] Sexual activity and risk-taking in later lifeHEALTH & SOCIAL CARE IN THE COMMUNITY, Issue 2 2001C. Merryn Gott MA PhD Abstract The primary study objective was to identify the prevalence of sexual activity and sexual risk-taking behaviour among a sample of older community-based adults. Secondary objectives included gathering data about past experiences of consultations regarding sexual health issues with general practitioners (GPs) and at genitourinary medicine (GUM) clinics, and exploring participants' STI and HIV/AIDS-related information needs. Individuals over the age of 50 were identified from four electoral wards within Sheffield, UK by means of a postal screen based on the electoral register. Respondents self completed a short postal questionnaire. Three hundred and nineteen individuals aged over 50 years selected at random from the general population responded. Approximately 80% of respondents were currently sexually active and 7% engaged in behaviours that may place them at risk of contracting a sexually transmitted infection (STI). Risk takers were typically male, aged between 50 and 60 years and married. Being male was also related to reporting current or past sexual health concerns. In total, of 75 respondents reporting such concerns, two thirds had discussed these concerns with their GP or attended a GUM clinic. Levels of satisfaction with such consultations were generally high, but declined with increasing age. Overall, most participants felt they had not received very much information about STIs and HIV, and about one quarter reported that they would like to receive more information on these topics. These data have implications for all health and social care professionals who work with older people and indicate a potential need for education to help professionals meet the sexual health needs of their older patients/clients. Further implications for sexual health promotion and the need for additional research in this field are also discussed. [source] Games Parents and Adolescents Play: Risky Behaviour, Parental Reputation and Strategic Transfers,THE ECONOMIC JOURNAL, Issue 528 2008Lingxin Hao This article examines parental reputation formation in intra-familial interactions. In a repeated two-stage game, children decide whether to drop out of high school or daughters decide whether to have births as teens and parents then decide whether to provide support to their children beyond age 18. Drawing on Milgrom and Roberts (1982) and Kreps and Wilson (1982), we show that, under certain conditions, parents have the incentive to penalise older children for their adolescent risk-taking behaviour in order to dissuade their younger children from such behaviour when reaching adolescence. We find evidence in favour of this parental reputation model. [source] Associations between youth assets and sexual activity: does adult supervision play a role?CHILD: CARE, HEALTH AND DEVELOPMENT, Issue 4 2007L. Harris Abstract Background, Youth participation in sexual risk behaviours continues to be a critically important public health topic. Additionally, as youth are frequently being left alone during the day without adult supervision, there are increased opportunities for sexual risk-taking behaviour. This study examined how the relationships of nine youth assets and sexual activity may vary according to the stratification of youth into two groups: self-care and supervised. Methods, Data were collected through at-home, in-person interviews from a random sample of inner-city youth (mean age = 15.4 years; 51.5% female; 48.8% White; 22.4% Black; 18.5% Hispanic; 10% Native American) and their parents (n = 1079 parent/youth pairs). Nine youth assets were analysed using multiple logistic regression. Examples of assets youth may possess are: positive role models, family communication, school connectedness, constructive use of time and aspirations for the future. The item used to assess sexual intercourse was ,Have you ever had sexual intercourse ("done it", "had sex", "made love", "gone all the way")?'. Asset/risk behaviour associations that were unique to one of the two strata were the focus of the study. Results, Thirty-seven per cent of youth spent two or more hours per day home alone. Youth who were supervised had a greater number of unique significant associations between assets and sexual activity than youth who were in the self-care group. Conclusions, Youth in supervised settings may be less likely to participate in sexual activity because of the presence of assets. Certain assets may also be important in deterring sexual activity for youth who are in self-care. [source] How do teenagers manage their food allergies?CLINICAL & EXPERIMENTAL ALLERGY, Issue 10 2010H. Monks Summary Background The peak incidence of deaths from anaphylaxis associated with nut allergy occurs in teenagers and young adults. During adolescence, the management of food allergy shifts from being the responsibility of parents to that of the young person. This is a group who therefore need special attention in the clinic. Objective This study aimed to understand the practical challenges that teenagers with food allergy experience using a qualitative approach and generate potential interventions for tackling these. Methods Teenagers aged 1118 years with food allergy completed a questionnaire about their food allergy and underwent a focused, semi-structured interview with open questions guided by a priori topic areas. Interviews were recorded, transcribed and analysed using a thematic approach. Results The study enrolled 18 teenagers with a median age of 15 years (10 females); the most common food allergens were peanuts and tree nuts. Three key themes emerged: avoidance of allergens, preparation for reactions and the treatment of reactions. The majority of teenagers reported eating foods labelled as ,may contain' an allergen as they perceive that they are actually very unlikely to contain an allergen. Many of the teenagers only carried their self-injectable adrenaline when they thought they are particularly at risk of a reaction. Some do not know how to appropriately treat an allergic reaction. More than half believed that educating other students at school about the seriousness of food allergies would make it easier to live with their food allergy. Conclusions A significant number of teenagers demonstrate risk-taking behaviour in the management of their food allergies. Teenagers also felt it would be helpful for their peers to be educated about food allergy. This novel strategy might help them to avoid trigger foods and enable teenagers to access help more readily if they suffer a reaction. Cite this as: H. Monks, M. H. Gowland, H. MacKenzie, M. Erlewyn-Lajeunesse, R. King, J. S. Lucas and G. Roberts, Clinical & Experimental Allergy, 2010 (40) 1533,1540. [source] Sexual health knowledge and risk behaviour in young people with first episode psychosisINTERNATIONAL JOURNAL OF MENTAL HEALTH NURSING, Issue 2 2005Heather Shield ABSTRACT:, The sexual health of clients has been poorly addressed by mental health service providers and sexually transmissible infection (STI) incidence rates are increasing among young people. A self-report questionnaire was used to gather information in order to describe and to conduct a cross-sectional analysis of sexual health knowledge, risk behaviour and STI screening history among young people who have experienced a first episode of psychosis, who present to community-based early psychosis programmes in south-eastern Sydney. STI knowledge was fair and sexual risk practice knowledge was poor regarding anal and oral sex. Women reported significantly more sexual partners than men. When those young people who had had unsafe sex attended for STI screens only, 5% received a complete screen. The survey result indicates a need for sexual health screening education to be conducted for clients. Against a background of escalating rates of HIV, STIs and high risk-taking behaviours among young people, it is essential that mental health staff are provided with the skills and education to address sexual health and harm minimization issues. [source] | |||||||||||||