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- Eid, Jarle, et al.
(författare)
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Psychometric properties of the Norwegian Impact of Event Scale-Revised in a non-clinical sample
- 2009
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Ingår i: Nordic Journal of Psychiatry. - : Informa UK Limited. - 0803-9488 .- 1502-4725. ; 63:5, s. 426-432
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Tidskriftsartikel (refereegranskat)abstract
- Background: Despite the widespread use of the Impact of Event Scale to measure post-traumatic stress symptoms, psychometric evaluations of the scale have revealed mixed findings. Aim: The aim of the present study is to provide new empirical evidence and examine the factor structure, reliability, and predictive validity of the Norwegian version of the IES-R. Methods: Posttraumatic stress symptoms were recorded in a student sample (n=312) 3 weeks after the Southeast Asian tsunami disaster in December 2004. Confirmatory factor analyses of the IES-R behavior items using structural equation modeling (SEM) were performed on four models from existing research. Results: The original three-factor model of intrusion, avoidance and hyperarousal symptoms exhibited the best goodness-of-fit indices when defined as oblique. The IES-R also revealed satisfactory reliability. Symptom levels of intrusion and avoidance were moderate, while hyperarousal scores were low, with a significant gender difference. Conclusion: Taken together, the IES-R revealed good psychometric properties in this nonclinical student sample and could be a useful instrument to assess and follow-up on PTSD symptoms after a certain identified trauma.
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| 2. |
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| 3. |
- Lunner, Katarina
(författare)
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Restrained Eating : Development and Models of Prediction in Girls
- 2003
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Body image concerns and dieting emerge at an early age among girls and become more pronounced with increasing age. Knowledge about risk factors for disturbed eating is crucial in order to develop theoretical models and to suggest new paths for preventive efforts. The aim of the present thesis was to investigate the development of disturbed eating and to evaluate a conceptual model of predictors of body dissatisfaction and disturbed eating in girls. The included studies are part of a seven-year longitudinal project employing an accelerated multi-cohort design, including several age groups (7, 9, 11, 13, 15 years at inclusion). Study I demonstrated a marked increase in the wish to be thinner and dieting attempts between the ages 10–14 and 9–13 years, respectively. In Study II, the Body Mass Index (BMI) predicted weight-related teasing and body dissatisfaction, and body dissatisfaction predicted restrained eating among Swedish girls in Grade 8 and Australian girls in Grades 7 and 8. Weight-related teasing partially mediated between BMI and body dissatisfaction in all three samples. Study III partially supported a conceptual model implying that BMI, weight-related teasing, and body dissatisfaction at 7–11 years predicted restrained eating among girls 12–14 years old. Study IV provided support for a conceptual model positing that BMI, body esteem, and to some extent weight-related teasing, predict body dissatisfaction and restrained eating during adolescence and young adulthood. In conclusion, there was partial support for a conceptual model including these risk factors for disturbed eating among girls.
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| 4. |
- Nilsson, Sofia, 1975-
(författare)
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Civil and Military Leadership Processes in Situations of Extreme Environmental Demands
- 2011
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The aim of the studies included in this thesis has been to develop the knowledge about civil and military leadership processes and the conditions for these in situations characterized by extreme environmental demands. The main part of the thesis is based upon empirical data gathered through semi-structured qualitative interviews with Swedish civil and military leaders. The studies, published in four articles, focused leadership during situations characterized by extreme environmental demands. The fourth article aimed at validating the theoretical model that was developed in study one. The thesis has pursued an integrated view in seeking to understand leadership and environment interactions during the conduct of international humanitarian aid and military peacekeeping operations. Hence it has been a matter of considering the individual leader in relation to the organisational and the external environment in order to study human adaption to meet the challenges and demands of disasters and conflicts. The results show that leadership during international humanitarian aid and military peacekeeping operations is a highly complex and demanding task. Premises for the processes involve a great number of environmental factors. In order to restore system balance within a larger system, there has to be congruence between individual appraisal of the organizational and the external environment to achieve successful task completion. Inconsistency among the environmental factors influencing leadership processes may evoke adaptional struggles characterized by both positive and negative stress responses that may affect performance and task completion. Reappraisal processes are shown to involve continuous assimilation processes of, and accommodation processes to, the environment, illustrating the shifting balances between environmental forces, organizational pressures, and individual initiative. The findings on stress responses are in line with earlier research, demonstrating that stress reactions exhibit great similarities regardless of hierarchical level while also indicating a double-edged pattern concerning the overall development of stress reactions. However, it does seems that hierarchical differences exist with regard to moral stress, while moral stress appears to lack the double-edged pattern since no positive reactions are reported even at moderate levels of stress impact. Taken together, future civil and military leaders need education in complex person-environment interactions in order to get a holistic picture of the underlying mechanisms, thus promoting the development of their adaptive capabilities. It is suggested that this thesis can be regarded as a context-specific contribution to complex system theory by providing insight into the organizational and external environmental factors/demands that influence civil and military leadership.
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