The lateral septum is heavily implicated in anxiety regulation, with lesions or pharmacological inhibition of this region suppressing rats' defensive responses in various rat models of anxiety. My first objective was to explore the functional relationship between the lateral septum and its major afferent structure, the ventral hippocampus. Although these structures are extensively connected, it was not clear if they work in concert to regulate anxiety-like behaviours. This idea was tested using a pharmacological disconnection technique, whereby communication between these two structures was disabled by infusing the GABAA agonist muscimol into one side of the lateral septum and the contralateral side of the ventral hippocampus. Increases in open-arm exploration were evident when muscimol was co-infused into one side of the lateral septum and the contralateral ventral hippocampus. By contrast, open arm exploration was not altered when muscimol was co-infused into one side of the lateral septum and the ipsilateral ventral hippocampus. These results support the contention that the ventral hippocampus and the lateral septum regulate rats' open arm exploration in a serial fashion, and that this involves ipsilateral projections from the former to the latter site. My second objective was to further characterize the neuropharmacological aspects of lateral septal regulation of behavioural defence. The lateral septum contains high levels of NPY Y1 and Y2 receptor binding sites in the brain, yet little is known about their contribution in anxiety regulation at this site. Therefore, the second aim of my thesis was to characterize the contribution of NPY and its Y1 and Y2 receptor subtypes in the lateral septal regulation of anxiety in the elevated plus maze, novelty-induced suppression of feeding, and shock-probe burying tests. I determined that distinct NPY receptors differentially contribute to NPY-mediated anxiolysis in a test specific manner, with the Y1 receptor mediating NPY-induced anxiolysis in the novelty-induced suppression of feeding test, and the Y2 receptor mediating NPY13-36-induced anxiolysis in the plus-maze test. Taken together, the results from these studies reinforce the view that the regulation of anxiety involves a variety of different, yet overlapping neural processes. / Thesis (Ph.D, Neuroscience Studies) -- Queen's University, 2012-09-25 18:02:11.172

No description available.

The current study obtained teacher and parent ratings of callous unemotional (CU) traits and aggression of 118 low socio economic middle school children at Time 1 and investigated the extent to which these variables individually and combined were able to predict school disruptive behaviours as by rated their teachers in Time 2 using multiple regression. Other Time 2 school variables were also assessed for their ability to add to the predictive model using stepwise hierarchical regression. The results showed both aggression and CU traits were predictive, but that CU traits did not explain additional variance over and above aggression. Two school variables were found to also explain additional variance over and above aggression at a statistically significant level. The first, that subtracted the total number of antisocial peers from total number of prosocial peers, was a stronger predictor than antisocial peers. The second, caregiver’s involvement in assisting their child with school homework, was assumed to represent parental support. Interpretations, limitations and areas for future research are discussed.

The impact of a rapid economic growth on the patterns and trends of overweight and obesity is profound. Obesity is closely linked to lifestyle choices and the risk behaviours that lead to obesity-related morbidities in young adults can be traced to the acceptable norms from childhood through to adulthood. The aims of this study were to estimate the prevalence of overweight and obesity using the World Health Organization classification and to investigate the influence of perceptions/beliefs and health-risk behaviours and their association with overweight and obesity among female university students of the United Arab Emirates University. A cross-sectional survey of the lifestyle choices, risk behaviours and perceptions of obesity with the Body Mass Index (BMI) status of 321 young adult women aged 18-30 years was conducted using a self-administered questionnaire. The female students responded to questions about their diet and physical activity patterns. They reported their height/weight, and weight-related measurements were taken to calculate the BMI. Overall, 20.2% of the students were overweight while 8.40% were obese. The likelihood of being overweight or obese was higher among students who were older, married and had a family history of obesity. Faculty of study (p=0.018) was significantly associated with prevalence of overweight and obesity. Many of the students did not consume fruits and vegetables or eat breakfast daily. Students who spent long hours on sedentary activities were more likely to be obese, with lack of time reported as a major reason for physical inactivity. Respondents wanted to lose weight most commonly for better health and well-being and because of problems with clothes sizes. In view of the high number of health risk behaviours and prevalence of overweight and obesity, prompt action is needed to initiate and sustain interventions and preventive measures that could change the health-compromising behaviours associated with excess weight.

The purpose of this thesis was to establish the importance of cognitive factors in the ability to follow therapeutic diets by examining participants’ reading behaviours when shown food labels. In two laboratory experiments, 64 undergraduate students were asked to repeatedly make decisions about the safety of foods that did or did not contain specified allergen targets. Mock food labels were presented in randomized and intermixed orders, with each of 30 products being presented 15 times. At each presentation students were able to make their safety judgement with or without consulting the food ingredient list on the label. With repetition of products, participants traded the certainty of verification for the facility of using memory. Mean target accuracy did not reach 100% implying limitations to people’s reading accuracy, learning, and judgements about that learning. The findings from this study suggest that people probably choose not to read food labels as often as they should and miss seeing target ingredients when they are consulting the label.

During the last few decades economic changes leading to transformations in the labour market have taken place in the industrialised world (Mauno & Kinnunen, 1999). These changes have had to be implemented as a result of economic recession, new information technology, industrial restructuring and accelerated global competition (Hartley, Jacobson, Klandermans & Van Vuuren, 199 1 ; Hellgren, Sverke & Isakson, 1999). South African organisations, to remain competitive in these harsh conditions, have been forced to improve organisational effectiveness and streamline operations (Human, Buitendach & Heyrnans, 2004). Many have had to engage in downsizing and restructuring in order to reduce labour costs and to improve competitiveness. These efforts usually result in the reduction of a large number of staff (Labuschagne, 2005). In addition to having adverse effects for those people who lose their jobs, it may also lead to increased stress among the survivors (Ashford, 1988; Ketz de Vries & Balazs, 1997). The primary objective of this research was to investigate the relationship between job insecurity, organisational citizenship behaviours and affective organisational commitment. Constructs were measured by means of the Job Insecurity Questionnaire (JIQ), the Organisational Citizenship Behaviours Questionnaire (OCB), the Organisational Commitment Questionnaire (OC) and a biographical questionnaire. A cross-sectional survey design was conducted among the 80 employees of a privately-owed franchise store of a large retail supermarket. A response of 66 completed questionnaires was received. / Thesis (M.Com. (Industrial Psychology))--North-West University, Vaal Triangle Campus, 2006.

During the last few decades economic changes leading to transformations in the labour market have taken place in the industrialised world (Mauno & Kinnunen, 1999). These changes have had to be implemented as a result of economic recession, new information technology, industrial restructuring and accelerated global competition (Hartley, Jacobson, Klandermans & Van Vuuren, 199 1 ; Hellgren, Sverke & Isakson, 1999). South African organisations, to remain competitive in these harsh conditions, have been forced to improve organisational effectiveness and streamline operations (Human, Buitendach & Heyrnans, 2004). Many have had to engage in downsizing and restructuring in order to reduce labour costs and to improve competitiveness. These efforts usually result in the reduction of a large number of staff (Labuschagne, 2005). In addition to having adverse effects for those people who lose their jobs, it may also lead to increased stress among the survivors (Ashford, 1988; Ketz de Vries & Balazs, 1997). The primary objective of this research was to investigate the relationship between job insecurity, organisational citizenship behaviours and affective organisational commitment. Constructs were measured by means of the Job Insecurity Questionnaire (JIQ), the Organisational Citizenship Behaviours Questionnaire (OCB), the Organisational Commitment Questionnaire (OC) and a biographical questionnaire. A cross-sectional survey design was conducted among the 80 employees of a privately-owed franchise store of a large retail supermarket. A response of 66 completed questionnaires was received. / Thesis (M.Com. (Industrial Psychology))--North-West University, Vaal Triangle Campus, 2006.

Individualised needs based approaches are increasingly being utilised to fund disability support services. Frequently, standardised assessments such as adaptive behaviour scales and, more recently, measures of support needs are used for determining level of need. The aim of this thesis is to understand the relationship between adaptive behaviours and support needs and to investigate factors that impact functional capacity and need for supports for individuals with an intellectual disability. Although a conceptually attractive approach to assessment, concern exists regarding the adequacy of the theoretical framework for guiding the development of support needs instruments. Though possessing theoretical similarities, adaptive behaviour and support needs scales are considered to measure different, albeit related constructs, prompting investigation into the nature of the relationship and the structure of the support needs construct. Accordingly, in Study 1 the Supports Intensity Scale (SIS), the Adaptive Behaviour Scale–Residential and Community (ABS-RC:2), and the Inventory for Client and Agency Planning (ICAP) were used to examine this relationship (N = 80). Dimensionality of the SIS (Section 1) was examined in reference to the three areas of conceptual, social, and practical skills, considered as comprising the adaptive behaviour construct. Factor analysis offered support for measurement of a common underlying construct. When considered in terms of the three adaptive behaviour skill areas, the support needs construct related predominantly to conceptual skills. Unlike adaptive behaviour scales, little is reported about the properties of support needs measures or factors that impact on an individual’s need for supports. Study 2 examined factors likely to influence adaptive behaviours and need for supports; in particular, the presence of coexisting disabilities. Using a measure of adaptive behaviour (i.e., ICAP) and two support needs scales (i.e., SIS and the Service Need Assessment Profile, SNAP), the extent to which adaptive and challenging behaviours and support needs (including medical) were impacted by the number and severity of disabilities was examined (N = 83). Results showed adaptive behaviours and support needs (including medical) were meaningfully related to the number and severity of disabilities present, whereas this was not so for challenging behaviours. Profiles for challenging behaviour measures did not support a linear association with number and severity of additional disabilities, raising the possibility that the profiles were influenced more by the nature of the additional disabilities present. Study 3 investigated the impact of the nature of the additional disabilities present on adaptive and challenging behaviours, support and medical needs using the same instruments utilised in Study 2. Each scale discriminated skills and needs associated with the presence of additional physical and speech disabilities. The support needs subscales of SNAP and SIS were more sensitive to the needs of individuals with coexisting neurological and sensory disabilities. SNAP was the only instrument to identify unique needs associated with the presence of a psychiatric disability but SIS was the only instrument to discriminate needs associated with the presence of a vision disability. Underlying this finding may be the importance of the person-environment interaction intrinsic to contemporary models of disability and support approach to assessment. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1349602 / Thesis (Ph.D.) -- University of Adelaide, School of Psychology, 2009

Context Current care guidelines recommend that pregnant women receive advice about the important health behaviours which may influence pregnancy outcomes. These behaviours are associated with pregnancy-related and long-term health outcomes for both the mother and infant. Poor pregnancy outcomes can result in increased costs of health care delivery through longer hospital admissions and intensive care admissions. Although provision of behavioural advice to pregnant women is recommended, most educational materials provide limited and inconsistent information. There is a clear need for widespread delivery of evidence-based information and skill-development strategies to influence pregnancy health behaviours. One avenue of information is via the pregnancy health records (PHRs) provided by maternity health services that women carry for the duration of their pregnancy. Objective My research sought to develop, implement, and evaluate a handheld health record for use in pregnancy (the “Pregnancy Pocketbook”) in an urban population of women with a high proportion of disadvantaged women. Study Overview My research comprised two phases, a development phase, and an implementation and evaluation phase. I identified specific behaviours (cigarette smoking, fruit and vegetable intake, and physical activity) requiring intervention and reviewed evidence-based frameworks, behaviour change theories, and guidelines for the presentation of written information to support behaviour change. I developed and refined the Pregnancy Pocketbook through a number of studies. Studies 1, 2, and 3 The Pregnancy Pocketbook was refined through a qualitative evaluation of a PHR enhanced with behaviour change tools (Study 1), focus groups held with women from the target group to investigate PHR preferences (Study 2), and strategy testing of the Pregnancy Pocketbook activities with women from the target group (Study 3). The focus group results combined with those from the qualitative evaluation suggested the Pregnancy Pocketbook should be a women-held, woman-focussed resource providing essential and comprehensive information on recommended pregnancy health behaviours. It should include tools to facilitate appropriate behaviour changes and tools for women to monitor pregnancy progress and record questions and notes to facilitate communication with their health carers. Strategy testing demonstrated that the Pregnancy Pocketbook content, screening questions and activities were well received by a small sample of women, with minor changes made following testing to improve the understanding and usability of the various sections of the Pregnancy Pocketbook. The final intervention (Study 4) The final version of the Pregnancy Pocketbook was a 73-page interactive resource, designed to be used according to the 5As self-management framework (Assess, Advise, Agree, Assist, Arrange), with screening tools, information, goal setting and self-monitoring activities with information for further referral for greater support when required. It was presented in an A5 plastic ring-bound folder, with dividers, labelled ‘Your health goals’, ‘Tracking your health goals’, ‘Your first antenatal visit’, ‘Pregnancy progress’, ‘Birth summary’, ‘Glossary’, and ‘Emergency contacts and general numbers’. The Pocketbook was evaluated using a quasi-experimental two-group design. Women were recruited from two antenatal clinics within the same health service district. Women received the PP during their first antenatal clinic appointment in one clinic (PP:n = 163) and women in the other clinic received usual care (UC: n = 141). Smoking, fruit and vegetable intake, and physical activity were assessed at baseline (service entry), 12-weeks post-service-entry and 24 weeks post-service-entry. Behaviour-specific self-efficacy was also measured during pregnancy. I also assessed the PP implementation process through adherence of the staff and organisation to planned implementation processes. Results At 12-weeks post-service-entry, a significantly greater proportion of women in the Pregnancy Pocketbook (PP) group had stopped smoking (7.6% vs 2.1%), compared with the Usual Care (UC) group, p <0.05. There was a net (non-significant) increase of 5% more women meeting physical activity guidelines (PP: 1.2% increase vs. UC: 3.5% decrease) and a net 20 minute difference in median minutes of physical activity (PP: 10 minute increase vs. UC: 10 minute decrease). Both groups increased their fruit and vegetable intake. Approximately two-thirds of women reported receiving the Pregnancy Pocketbook, many without introduction or explanation. Few women completed sections of the Pregnancy Pocketbook that required health professional assistance, suggesting minimal interaction about the resource between health staff and the women in their care. Conclusion and future recommendations There were low levels of adherence to health behaviour recommendations for pregnancy in this sample. The Pregnancy Pocketbook produced significant effects on smoking cessation, even under limited delivery conditions. A refocus of antenatal care towards primary prevention is required to more consistently provide essential health information and behaviour change tools for improved maternal and infant pregnancy health outcomes. Future studies must include process evaluations and apply the theory of dissemination to enhance uptake of the interventions.

This study was undertaken in conjunction with the Successful Integration of Learning Technologies (SILT) project in state schools in Victoria, Australia. The thesis reports an interpretative analysis of cooperative learning in computer-supported classes as it is currently conducted in selected Victorian primary schools. The framework for the study is grounded in the belief that cooperative learning encourages learning as a group as opposed to learning in a group (Slavin, 1980). The framework emphasises the importance of teachers using cooperative learning as a structure to enable students to think together. Therefore, analysis focuses on cooperative learning in a classroom context and the teachers’ units of work guiding the tasks they create. Using a mixed-method approach involving questionnaires, interviews and videotaped observations, the study was conducted in four sites with two teachers from each school and two groups of students from each class. (For complete abstract open document)