Psychology - Collected Works

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https://hdl.handle.net/2328/26019

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Browsing Psychology - Collected Works by Author "Austin, S Bryn"
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    How perfectionism and ineffectiveness influence growth of eating disorder risk in young adolescent girls
    (Elsevier, 2015-02-03) Wade, Tracey Diane ; Wilksch, Simon Mark ; Paxton, Susan J ; Byrne, Susan M ; Austin, S Bryn
    Objective: While perfectionism is widely considered to influence risk for eating disorders, results of longitudinal studies are mixed. The goal of the current study was to investigate a more complex model of how baseline perfectionism (both high personal standards and self-critical evaluative concerns) might influence change in risk status for eating disorders in young adolescent girls, through its influence on ineffectiveness. Method: The study was conducted with 926 girls (mean age of 13 years), and involved three waves of data (baseline, 6- and 12-month follow-up). Latent growth curve modeling, incorporating the average rate at which risk changed over time, the intercept (initial status) of ineffectiveness, and baseline perfectionism, was used to explore longitudinal mediation. Results: Personal standards was not supported as contributing to risk but results indicated that the higher mean scores on ineffectiveness over the three waves mediated the relationship between higher baseline self-critical evaluative concerns and both measures of eating disorder risk. The relationship between concern over mistakes and change in risk was small and negative. Discussion: These results suggest the usefulness of interventions related to self-criticism and ineffectiveness for decreasing risk for developing an eating disorder in young adolescent girls.
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    Prevention Across the Spectrum: a randomized controlled trial of three programs to reduce risk factors for both eating disorders and obesity
    (Cambridge University Press, 2014-12-19) Wilksch, Simon Mark ; Paxton, Susan J ; Byrne, Susan M ; Austin, S Bryn ; McLean, Sian A ; Thompson, Kelly M ; Dorairaj, Kavitha ; Wade, Tracey Diane
    Background: A randomized-controlled trial (RCT) of 3 school-based programs and a no intervention control group was conducted to evaluate their efficacy in reducing eating disorder and obesity risk factors. Methods: N = 1,316 Grade 7 and 8 girls and boys (M age = 13.21 years) across three Australian states were randomly allocated to: Media Smart; Life Smart; Helping, Encouraging, Listening and Protecting Peers Initiative (HELPP) or control (usual school class). Risk factors were measured at baseline, post-program (5-weeks later), and 6- and 12-month follow-up. Results: Media Smart girls had half the rate of onset of clinically significant concerns about shape and weight than control girls at 12-month follow-up. Media Smart and HELPP girls reported significantly lower weight and shape concern than Life Smart girls at 12-month follow-up. Media Smart and control girls scored significantly lower than HELPP girls on eating concerns and perceived pressure at 6-month follow-up. Media Smart and HELPP boys experienced significant benefit on media internalization compared to control boys and these were sustained at 12-month follow-up in Media Smart boys. A group x time effect found Media Smart participants reported more physical activity than control and HELPP participants at 6-month follow-up, while a main effect for group found Media Smart participants reported less screen time than controls. Conclusions: Media Smart was the only program to show benefit on both disordered eating and obesity risk factors. Whilst further investigations are indicated, this study suggests that this program is a promising approach to reducing risk factors for both problems.