175 resultados para Aging - Psychological aspects


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This research is about a shared journey of being together. It involved thirteen women nurses (including myself) in a process approach to working with data collected through audio transcriptions of conversations during group get-togethers, field notes and journalling over twelve months. The project was conducted in a large acute care metropolitan hospital where the ward staff interests lie in a practice history of the medical specialty of gynaecology and women's health. Prior to commencement ethical approval was gained from both the University and hospital ethics committees. Accessing the group was complicated by the political climate of the hospital, possibly exaggerated further by the health politics across the state of Victoria, at a time of major upheaval characterised by regionalism, rationalisation and debt servicing. In order to ascertain women clinical nurses' constructions of collegiality I adopted an ethnomethodological approach informed by a critical feminist lens to enable the participants to engage in a process of openly ideological inquiry, in critiquing and transforming practice. I felt the choice of methodology had to be consistent with my own ideological position to enable me to be myself (as much as I could) during the project. I wanted to work with women to illuminate the ways in which dominant ideologies had come to be apprehended, inscribed, embodied and/or resisted in the everyday intersubjective realities of participants. The research itself became a site of resistance as the group became aware of how and in what ways their lives had become distorted, while at the same time it collaboratively transformed their individual and collective practice understandings, enabling them to see the self and other anew. Set against the background of dominant discourses on collegiality, women's understandings of collegiality have remained a submerged discourse. Revealed in this work are complex inter-relationships that might be described by some as collegial!, but for others relations amongst these women depict alternative meanings in a rich picture of the fabric of ward life. The participants understand these relations through a connectedness that has empathy as its starting point. In keeping with my commitment to engage with these women I endeavoured to remain faithful to the dialogical approach to this inquiry. Moreover I have brought the voices of the women to the foreground, peeling away the rhizomatic interconnections in and between understandings. What this has meant in terms of the thesis is that the work has become artificially distanced for the purposes of academic requirements. Nevertheless it speaks to the understandings the participants have of their relationships; of the various locations of the visible and invisible voices; of the many landscapes and images, genealogies, subjectivities and multiple selves that inform the selves with(in) others and being-in-relation. Throughout the journey meanings are revealed, revisited and reconstructed. Many nuances comprise the subtexts illuminating the depths of various moral locations underpinning the ways these women engage with one another in practice. The process of the research weaves through multiple positions, conveying the centrality of shared goals, multiple identities, resistances and differences which contribute to a holding environment, a location in which women value one another in their being-in-relation and in which they stand separately yet together.

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This thesis examined body dissatisfaction and body change behaviors among adolescent girls and boys from a biopsychosocial framework. The contribution of biological, psychological and sociocultural factors were examined in relation to body dissatisfaction, weight loss, weight gain and increased muscle tone behaviors among early adolescent girls and boys. In particular, pubertal maturation, body mass index (BMI), perception of body shape and size and psychological factors, such as depression, anxiety, ineffectiveness, self-esteem and perfectionism, were examined as possible factors that may precipitate or maintain body dissatisfaction and engagement in body change strategies. The sociocultural factors evaluated were the quality of family and peer relationships, as well as the influence of family and peers in predicting the adoption of specific body change strategies. The specific mechanisms by which these influences were transmitted were also examined. These included perceived discussion, encouragement and modelling of various body change strategies, as well as perceived teasing about body shape and size. A number of separate cross-sectional and longitudinal studies were conducted to examine the above relationships and identify the factors that contribute to weight loss, weight gain and increased muscle tone behaviors in adolescents. Study 1 examined the psychometric properties and principal components structure of the Bulimia Test Revised (BULIT-R; Thelen, Farmer, Wonderlich, & Smith, 1991) to assess its applicability to adolescent samples. Study 2 investigated the nature of body dissatisfaction and weight loss behaviors among 603 adolescents (306 girls and 297 boys) using a standardised questionnaire. This preliminary study was conducted to ascertain whether variables previously found to be relevant to adolescent girls, could also be related to the development of body dissatisfaction and weight loss behaviors among adolescent boys. Studies 3 and 4 described the development and validation of a body modification scale that measured weight loss, weight gain and increased muscle tone behaviors. Studies 5 and 6 were designed to modify an Excessive Exercise Scale developed by Long, Smith, Midgley, and Cassidy (1993) into a shorter form, and validate this scale with an adolescent sample. Study 7 investigated the factors that contribute to weight loss, weight gain and increased muscle among adolescent girls and boys both cross-sectionally and longitudinally (over one year). Structural equation modelling was used to examine associations among self-reported body dissatisfaction, body change strategies and a range of biological, psychological and sociocultural variables both cross-sectionally and longitudinally. Overall, the results suggested that both girls and boys experience body dissatisfaction and engage in a number of different body change strategies in order to achieve an ideal size. A number of gender similarities and differences were identified in the expression of body dissatisfaction and the adoption of body change strategies for both girls and boys. Girls were more likely than boys to report body dissatisfaction and engage in weight loss behaviors, while boys were more likely than girls to engage in weight gain and increased muscle tone behaviors. Generally, the same factors were found to contribute to weight loss, and more specifically, bulimic symptomatology, ad weight gain in both adolescent girls and boys. While a combination of biological, psychological and sociocultural factors contributed to bulimic symptomatology, only biological and psychological factors were found to contribute to weight gain in adolescents. The most notable gender differences were found in the model of increased muscle tone. Sociocultural and biological factors contributed to increased muscle tone behaviors in girls, while sociocultural and psychological factors were implicated in these behaviors in adolescent boys. With the exception of the model of increased muscle tone for boys, body dissatisfaction was a consistent factor in the adoption of body change behaviors. Consistent with previous investigations, the present thesis provides empirical support for the need to examine the etiology and maintenance of such concerns and behaviors from a multifaceted perspective.

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Research over the last decade has shown that auditorily cuing the location of visual targets reduces the time taken to locate and identify targets for both free-field and virtually presented sounds. The first study conducted for this thesis confirmed these findings over an extensive region of free-field space. However, the number of sound locations that are measured and stored in the data library of most 3-D audio spatial systems is limited, so that there is often a discrepancy in position between the cued and physical location of the target. Sampling limitations in the systems also produce temporal delays in which the stored data can be conveyed to operators. To investigate the effects of spatial and temporal disparities in audio cuing of visual search, and to provide evidence to alleviate concerns that psychological research lags behind the capabilities to design and implement synthetic interfaces, experiments were conducted to examine (a) the magnitude of spatial separation, and (b) the duration of temporal delay that intervened between auditory spatial cues and visual targets to alter response times to locate targets and discriminate their shape, relative to when the stimuli were spatially aligned, and temporally synchronised, respectively. Participants listened to free-field sound localisation cues that were presented with a single, highly visible target that could appear anywhere across 360° of azimuthal space on the vertical mid-line (spatial separation), or extended to 45° above and below the vertical mid-line (temporal delay). A vertical or horizontal spatial separation of 40° between the stimuli significantly increased response times, while separations of 30° or less did not reach significance. Response times were slowed at most target locations when auditory cues occurred 770 msecs prior to the appearance of targets, but not with similar durations of temporal delay (i.e., 440 msecs or less). When sounds followed the appearance of targets, the stimulus onset asynchrony that affected response times was dependent on target location, and ranged from 440 msecs at higher elevations and rearward of participants, to 1,100 msecs on the vertical mid-line. If targets appeared in the frontal field of view, no delay of acoustical stimulation affected performance. Finally, when conditions of spatial separation and temporal delay were combined, visual search times were degraded with a shorter stimulus onset asynchrony than when only the temporal relationship between the stimuli was varied, but responses to spatial separation were unaffected. The implications of the results for the development of synthetic audio spatial systems to aid visual search tasks was discussed.

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This thesis investigated children's school achievement in terms of an integration of three theories of achievement motivation. The three theoretical outlooks were expectancy-value theory (EVT), implicit theories of intelligence (ITI), and flow theory (FT). The first of two studies was an exploratory investigation of the effectiveness of each theory independently and combined to predict children's achievement in four school subjects. The subject areas were maths, reading, instrumental music and sport. Participants were 84 children (40 females and 44 males) aged 9 to 10 years, one of each child's parents, and school teachers of each child in the four subject areas. All data were collected through questionnaires based on the three models. The results indicated that EVT and FT but not ITI accounted for a significant amount of the variance in children's achievement, including effects for subject area and gender. A second confirmatory study tested EVT, FT and an integrated model for the prediction of achievement in maths, reading and instrumental music. The participants were a further 141 children (74 females and 67 males) aged 10 to 11 years, and a parent and teachers of each child. Data collection using questionnaires occurred early in the school year (Timel) and approximately five months later (Time2). For EVT, children and parents’ competence beliefs were significant predictors of children's achievement in each subject area. Females tended to believe themselves more competent at reading and instrumental music and also valued these subjects more highly than boys. Modeling results for flow theory indicated that children's emotional responses to classes (happiness and confusion) were significant predictors of achievement, the type of emotion varying between subject areas and time periods. Females generally had a more positive emotional reaction to reading and instrumental music classes than males did. The integrated model results indicated significant relationships between EVT and flow theories for each subject area, with EVT explaining most achievement variance in the integrated model. Children's and parents’ competence beliefs were the main predictors of achievement at Timel and 2, Subject area and gender differences were found which provide direction for future research. Anecdotal reports of parents and teachers often attest to individual differences in children's involvement in various school domains. Even among children of apparently similar intelligence, it is not uncommon to find one who likes nothing better than to work on a mathematics problem while another much prefers to read a novel or play a musical instrument Some children appear to achieve good results for most of the activities in which they are engaged while others achieve in a less consistent manner, sometimes particularly excelling in one activity. Some children respond to failure experiences with a determination to improve their performance in the future while others react with resignation and acceptance of their low ability. Some children appear to become totally absorbed in the activity of playing sport while others cannot wait for the game to end. The primary research objective guiding the current thesis is how children's thoughts and feelings about school subjects differ and are related to their school achievement. A perusal of the achievement motivation literature indicates several possible models and concepts that can be applied to explain individual differences in children's school achievement. Concepts such as academic self-concept, multiple intelligences, intrinsic and extrinsic motivation, self-beliefs, competence beliefs, subjective task values, mastery and performance goals, ‘Flow’ experiences and social motivation are just some of the constructs used to explain children's achievement motivation, both within and between various activity domains. These constructs are proposed by researchers from different theoretical perspectives to achievement motivation. Although there is much literature relevant to each perspective, there is little research indicating how the various perspectives may relate to each other. The current thesis will begin by reviewing three currently popular theoretical orientations cited in achievement motivation research: subjective beliefs and values; implicit theories of intelligence, and flow experience and family complexity. Following this review, a framework will be proposed for testing the determinants of children's school achievement, both within each of the three theoretical perspectives and also in combination.

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Overall, this thesis was designed to explore the nature of adolescent boys' body image, the effects of body image on body change strategies and psychological adjustment, and the factors that influence body image. The first study examined body image in 362 adolescent boys. Body image was considered in terms of attitudes to different body parts and attributes, including, lower, middle and upper body, as well as weight, shape and muscles. The relationships between Body Mass Index (BMI), body image, sociocultural messages, psychological adjustment and body change strategies, including strategies to decrease weight and increase muscles using food and exercise, drive for thinness, bulimic attitudes and behaviour, excessive exercise, food supplements to lose weight, increase muscles and steroids, were also investigated. Multiple regression analyses were used to examine the role of body image, sociocultural messages and psychological adjustment to predict satisfaction with different body attributes and body change strategies. The findings from study one led to the development of a program aimed at preventing the development of unhealthy attitudes and behaviours among adolescent boys. Study two involved the implementation and evaluation of this prevention program. One hundred and twenty one boys participated in the program. The program was based on social-cognitive theory, and included a focus on accepting differences and the development of self-esteem. The boys who participated in the program indicated some change in existing attitudes and showed less development of risk behaviours relative to the control group. The implications of the findings from this thesis in relation to future research, as well as the prevention of adolescent boys' body image problems are discussed.

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In this intriguing and witty survey, Paul Carter tours the cultural history of agoraphobia. By analyzing the way people have negotiated open spaces from Greek and Roman times to the present day, he finds that "space fear" ultimately results from the inhibition of movement, and shows how this discovery can provide lessons for today’s urban planners and architects. Along the way, he asks why Freud repressed his agoraphobia, and examines the work of various theorists including Le Corbusier, Benjamin, and R.D. Laing, as well as artists such as Munch, Lapique, and Giacometti.

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This thesis presents an integrative model of relationship functioning, delineating the factors that significantly influence the way in which couples experience lasting and satisfying relationships. Given that marital relationships are complex, multiple intra and interpersonal factors need to be considered in order to better understand the pathways which lead to healthy relationship functioning. The integrative nature of the model is therefore argued to capture the intricate dynamics inherent in couple functioning. The portfolio provides four case studies of different loss experiences which are linked by the theme of disenfranchised grief which is deemed an important issue to deal with in therapy.

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Fibromyalgia is an unexplained but often debilitating syndrome, characterised primarily by widespread pain. This thesis provides direct evidence that physical and emotional stress exacerbates pain, fatigue and other symptoms of Fibromyalgia and supports the assertion that symptoms may be related to disordered stress-response mechanisma in the human brain. The professional portfolio presents four clinical case studies that demonstrate the utility of Acceptance and Commitment Therapy (ACT) in the psychotherapeutic treatment of people with chronic illness.

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This research investigated the impact of playing violent videogames. Aggressive or anxious responses were most likely: when the player perceived the violence in the games to be extreme, when the player experienced a heightened sense of becoming 'absorbed' into the game, and during a relatively brief exposure to the game. The portfolio explores the use of manualised interventions in psychology research and practice. Four illustrative case studies regarding the efficacy and effectiveness of adapting manualised interventions for clients with chronic health conditions are presented.

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This thesis comprises three studies aimed at examining viewers' responses to filmed violence. The first focused on habituation, the second desensitisation and the third compared the paradigms. Results indicated that several factors influence how an individual responds to filmed violence and provide some insight into the impact of repetitive exposure to media violence. The portfolio presents four case studies emphasising the difficulties for assessing risk and associated interventions in the client population of individuals found not guilty because of mental impairment. This as an area of fundamental discord between psychology and law.

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This research found that grief-related beliefs contained elements of a traditional stereotypic view. Further, a bereaved individual's general way of coping influenced how others expected them to grieve. Finally, aspects of both a bereaved individual and support provider were found to impact the willingness of individuals to offer bereavement-related support.

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This thesis examined the over-representation of step-parents as perpetrators of child physical abuse. Results suggested a number of differences between step- and biological parents in attachment, information-processing, and disciplinary practices. Results were used to formulate a model of step-parental abuse, which has potential implications for the prevention of child physical abuse. The professional portfolio presents four cases from forensic practice in which predictions about further criminal behaviour are made. These cases are then used to discuss several practical questions that may be posed by psychologists who are considering which approach (clinical or actuarial) to use.

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This thesis' longitudinal study found that young adolescent boys' reported significant concerns with their weight and shape, particularly with respect to having a more muscular but lean physique. The strongest predictors of high body dissatisfaction, among boys, were poor perceptions of their sporting ability and low self-esteem. The portfolio examines the use of Single Session Therapy (SST) suggesting that SST can effectively reduce waiting lists and provide a single and complete intervention that is effective in approximately 50% of cases.

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The thesis is based upon tests of a model for predicting condom use. Anticipation of negative emotions following unprotected intercourse was the strongest predictor of intention to use condoms. Interventions which encourage people to consider the emotions they would experience following unprotected intercourse may prove valuable in promoting condom use.

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This study compared how people with different levels of depression judged their control over a task. People with more severe depression were more accurate in judging their control than were people with less severe depression whilst nondepressed individuals overestimated their control over the task.