The purpose of this study was to validate an abbreviated interview schedule for the assessment of adolescent life stress based on the original Life Events and Difficulties Schedule (LEDS) by Brown and Harris (1978). The main objective of the abbreviated instruments was to elicit the severe stressors shown to be of etiological significance for predicting psychiatric disorder without requiring two hours to administer. A non-clinical sample of 58 adolescents (mean age = 15.67 years) completed the Childhood Depression Inventory (Kovacs, 1982), the Abbreviated Life Event and Difficulty Schedule - Adolescent version (ALEDS-A), and the full-length LEDS-Adolescent Version (LEDS-A). The abbreviated instrument elicited significantly fewer minor stressors, while retaining its ability to solicit the most severe stressors in a 30-minute time period. Results are interpreted with reference to Brown and Harris's (1978) sociological theory of major life stress and depression.

The present research compared a newly developed interview measure of adolescent life stress, the Life Events and Difficulties Schedule (Brown & Harris, 1978), to a self-report checklist The Adolescent Perceived Events Scale (Compas, Davis, Forsythe, & Wagner, 1997). Participants consisted of a community-based sample, of 58 adolescents in grades 9--11. The life strew interview and checklist were compared on a number of factors, namely accuracy and comprehensiveness of obtained stressor data and accuracy of stressor dating. Moreover, the relative performance of the two measures in predicting current depressive symptomatology was assessed. Results revealed differences in the stress profiles obtained by the two measures. Respondents reported stressors in a redundant manner on the checklist and reported a number of stressors on the checklist that did not qualify as stressors according to interview criteria. The checklist was found to lack in comprehensiveness, as many stressors elicited during the interview had no counterpart on the checklist. Respondents were unable to precisely date stressors on the self-report checklist. Results indicated that stressor data obtained by the interview was more associated and more, predictive of current levels of depressive symptomatology than stressor data obtained by the checklist. The implications of these results in reference to life stress assessment and research in the area of adolescent life stress and depression is discussed.

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Afrikaans text / Die doel van hierdie navorsing is om die stressors by oorblywende personeel na 'n a.fleggingsproses in die Suid-Afrikaanse Lugmag(SALM), te meet en te beskryf Vanuit die literatuuroorsig word die stressors in aflegging; die bedryfsimpak van stressors na 'n afleggingsproses op organisasiegedrag en die konsepte stres, werkstres en organisasie­ stres bespreek. Die empiriese navorsing word vanuit 'n funksionalistiese paradigma aangebied, waarteen die behaviorisme en sistemiese skole die onderbou vorm. Die navorsingsontwerp is 'n beskrywende studie en maak gebruik van 'n gestratifiseerde proporsionele ewekansige steekproe£ Die ervaring van werk- en lewensomstandighede­ vraelys is vir die meet van stressors in die organisasie gebruik. Die resultate vertoon organisasiefunksionering, loopbaanaangeleenthede en vergoedings­ aspekte as die vemaamste stressors by oorblywende personeel van die SALM. Toekomstige navorsing kan temas soos die sielkundige kontrak, werksonsekerheid en organisasieverbondenheid insluit. Relevante sleutelwoorde is stressors in aflegging, oorlewendes sindroom, organisasie­ klimaat, organisasie·agteruitgang en chroniese stres. / The aim of the survey is to identify and measure the stressors of survivors after a layoff process in the South African Air Force (SAAF). The literature highlights stressors in layoffs; the industrial impact of stressors after a layoff process on organisational behavior and the concepts stress, workstress and organisational stress. The empirical research is presented from a functionalistic paradigm with behaviorism and systems theory as foundation. The research design is a descriptive study and make use of a stratified proportional sample. The experience of work- and life circumstances questionnaire was used in the measurement of stressors. The results show organisational functioning, career aspects and remuneration as the main stressors of survivors. Themes that can be incorporated in future research are the psychological contract, job insecurity and organisational commitment. Relevant keywords in the research are stressors in layoffs, survivor syndrome, organisational climate, organisational decline and chronic stress. / Industrial and Organisational Psychology / MCom (Bedryfsielkunde)

Afrikaans text / Die doel van hierdie navorsing is om die stressors by oorblywende personeel na 'n a.fleggingsproses in die Suid-Afrikaanse Lugmag(SALM), te meet en te beskryf Vanuit die literatuuroorsig word die stressors in aflegging; die bedryfsimpak van stressors na 'n afleggingsproses op organisasiegedrag en die konsepte stres, werkstres en organisasie­ stres bespreek. Die empiriese navorsing word vanuit 'n funksionalistiese paradigma aangebied, waarteen die behaviorisme en sistemiese skole die onderbou vorm. Die navorsingsontwerp is 'n beskrywende studie en maak gebruik van 'n gestratifiseerde proporsionele ewekansige steekproe£ Die ervaring van werk- en lewensomstandighede­ vraelys is vir die meet van stressors in die organisasie gebruik. Die resultate vertoon organisasiefunksionering, loopbaanaangeleenthede en vergoedings­ aspekte as die vemaamste stressors by oorblywende personeel van die SALM. Toekomstige navorsing kan temas soos die sielkundige kontrak, werksonsekerheid en organisasieverbondenheid insluit. Relevante sleutelwoorde is stressors in aflegging, oorlewendes sindroom, organisasie­ klimaat, organisasie·agteruitgang en chroniese stres. / The aim of the survey is to identify and measure the stressors of survivors after a layoff process in the South African Air Force (SAAF). The literature highlights stressors in layoffs; the industrial impact of stressors after a layoff process on organisational behavior and the concepts stress, workstress and organisational stress. The empirical research is presented from a functionalistic paradigm with behaviorism and systems theory as foundation. The research design is a descriptive study and make use of a stratified proportional sample. The experience of work- and life circumstances questionnaire was used in the measurement of stressors. The results show organisational functioning, career aspects and remuneration as the main stressors of survivors. Themes that can be incorporated in future research are the psychological contract, job insecurity and organisational commitment. Relevant keywords in the research are stressors in layoffs, survivor syndrome, organisational climate, organisational decline and chronic stress. / Industrial and Organisational Psychology / MCom (Bedryfsielkunde)

This study evaluated a revised version of the Stress-Related Growth Scale (SRGS-R). The SRGS-R has two major differences from the Stress-Related Growth Scale (SRGS). It uses neutral wording of items instead of the original positively worded items, and it uses positive and negative scaling choices. This study included participants (N = 764) recruited through Amazon MTurk. There were three versions of the SRGS-R tested - the SRGS with neutral wording of items only (SRGS-R-N), the SRGS with positive and negative scaling only (SRGS-R-S), and the SRGS-R, with both changes. We randomly assigned participants to complete one of four PTG measures - the SRGS-R-N, SRGS-R-S, SRGS-R, or the Posttraumatic Growth Inventory (PTGI). The PTGI elicited the largest levels of reported PTG, while the SRGS-R elicited the smallest levels. The two modified versions displayed scores between the SRGS-R and the PTGI in the small and moderate growth groups. In the current study the SRGS-R was negatively related to PTSD symptoms, depression, anxiety (negative, but not statistically significant), global distress (negative, but not statistically significant), and avoidance-focused coping (negative, but not statistically significant), and positively related to positive well-being, quality of life, problem-focused coping, and emotion-focused coping. In comparison, the PTGI was unrelated to depression, anxiety, and global distress, and positively related to PTSD symptoms, positive well-being, quality of life, and all three coping styles. These findings provide further evidence that the SRGS-R is an improvement over the PTGI in measuring actual growth, while limiting illusory growth. We found the combination of these changes yields the greatest improvements in measurement. By improving the measurement of PTG, we can reduce the variation in reported PTG following traumatic events found throughout the literature. This will allow researchers and clinicians to better identify which factors contribute to growth following traumatic events, and aid them in designing treatments to encourage actual growth following traumas.

A dissertation submitted in partial fulfilment of the requirements for the degree of Master of Arts (Counselling Psychology) in the Department of Psychology, University of Zululand, South Africa, 2004. / The present study examined Public Order Police Officers' perceptions of traumatic symptomatology. The study consists of three aims. The first aim was to ascertain the type of traumatic symptomatology members of the Public Order Police experience. The second aim was to determine whether rank has an influence on perceptions of traumatic symptomatology. The third aim was to establish if a relationship existed between experiences of traumatic symptomatology and the respondent characteristics of gender, age or work experience. The study revealed that half of the sample experienced stress as a type of symptomatology. It was also found that: 43% experienced depression; 29% experienced psychosomatic complaints; 28% experienced family and marital problems; 26% experienced alcohol or drug abuse; 25% experienced aggressive behaviour; and 22% of the Public Order Police experienced suicide as a type of traumatic symptomatology. This study also found that no relationship existed between: police rank, gender, length of service and traumatic symptomatology. The only relationship that existed in this study was between age and Public Order Police Officers' perceptions of traumatic symptomatology. The general consensus in literature is that the expression of personal feelings is severely limited within the police culture (Joyce, 1989; Kroes, 1985; Pogrebin & Poole, 1991; Burgers, 1994). The police culture may influence the manner in which police officers respond to traumatic events, family members, the community and psychological treatment To add to the problem, many officers fear asking for help. The creed of the male-dominated police profession reflects a predominantly macho attitude; police officers perceive themselves as problem solvers, not people with problems (Reiser, 1974). It can be argued in this study that untreated trauma can be manifested through subtle traumatic symptoms if psychological treatment is not sought. The findings of this study highlight the need for these members to be counselled to benefit themselves, family and the community.

Life events inventories have been extensively used to investigate the relationship between stressful life events and the etiology of disease. In order to elucidate conceptual and methodological issues surrounding the use of these instruments, a Life Events Questionnaire was constructed and administered to 100 university students. Subjects indicated which of 40 events they had experienced and rated all events on a 20 point scale based on the amount of readjustment judged to be required by each event, both for themselves and for a hypothetical average person. Results of a three-way ANOVA indicated that in the majority of cases, neither the gender nor the experience of the rater, nor the point of reference used in making the judgment had a significant effect on the magnitude of the ratings obtained. For ratings of events which did show significant group differences, the primary finding was that normative values appear to be more consistently applied to estimates of others' reactions than to those of the raters themselves.

The objective of this study was to investigate, both experimentally and analytically, the stresses and deformations in angle-ply composite tubes subjected to axisymmetric thermal loading. For the theoretical portion, a generalized plane strain elasticity analysis was developed. The analysis included mechanical and thermal loading and temperature-dependent material properties. Using the elasticity analysis and a temperature range of 116 K to 450 K, stress levels were found to be high for the specific designs considered, compared to material failure levels. In addition, the use of temperature-dependent material properties was found to have a significant effect on the predicted stresses and deformations. The elasticity analysis was also used to study the effect of including a thin metallic coating on a graphite-epoxy tube. The stresses in the coatings were found to be quite high, exceeding the yield stress of aluminum. An important finding in the analytical studies was the fact that even tubes with a balanced-symmetric lamination sequence exhibited shear deformation or twist. The radial location of an off-axis ply was found to influence its effect on the overall torsional tube response. For the experimental portion, an apparatus was developed to measure torsional and axial response in the temperature range of 140 K to 360 K. Eighteen specimens were tested, combining three material systems, eight lamination sequences, and three off-axis ply orientation angles. For the twist response, agreement between analysis and experiment was found to be good. The axial response of the tubes tested was found to be greater than predicted by a factor of three. As a result of the study, it is recommended that the thermally-induced axial deformations be investigated further, both experimentally and analytically. / Master of Science