Oregon Research Institute, 1715 Franklin Blvd., Eugene, OR 97403, USA.
Prev Sci. 2012 Apr;13(2):129-39. doi: 10.1007/s11121-011-0251-4.
Test (a) whether a dissonance-based eating disorder prevention program that reduces thin-ideal internalization mitigates the effects of risk factors for eating disorder onset and (b) whether the risk factors moderate the effects of this intervention on risk for eating disorder onset, to place the effects of this intervention within the context of established risk factors. Female adolescents (N=481) with body image concerns were randomized to the dissonance-based program, healthy weight control program, expressive writing control condition, or assessment-only control condition. Denial of costs of pursuing the thin-ideal was the most potent risk factor for eating disorder onset during the 3-year follow-up (OR=5.0). The dissonance program mitigated the effect of this risk factor. For participants who did not deny costs of pursuing the thin-ideal, emotional eating and externalizing symptoms increased risk for eating disorder onset. Negative affect attenuated the effects of each of the active interventions in this trial. Results imply that this brief prevention program offsets the risk conveyed by the most potent risk factor for eating disorder onset in this sample, implicate three vulnerability pathways to eating pathology involving thin-ideal pursuit, emotional eating, and externalizing symptoms, and suggest that negative affect mitigates the effects of eating disorder prevention programs.
（a）检验一种基于不和谐感的饮食失调预防计划是否可以减轻导致饮食失调发作的风险因素的影响，以及（b）检验这些风险因素是否会调节该干预对饮食失调发作风险的影响，从而在既定风险因素的背景下评估该干预的效果。有身体意象问题的女性青少年（N=481）被随机分配到基于不和谐感的计划、健康体重控制计划、表达性写作对照组或仅评估对照组。否认追求理想体型的代价是导致饮食失调发作的最有力的风险因素（OR=5.0）。不和谐计划减轻了这一风险因素的影响。对于不否认追求理想体型代价的参与者，情绪性进食和外化症状增加了饮食失调发作的风险。消极情绪减弱了该试验中每种积极干预的效果。研究结果表明，这种简短的预防计划可以抵消该样本中导致饮食失调发作的最有力风险因素所带来的风险，暗示了涉及追求理想体型、情绪性进食和外化症状的三种易感性发病途径，并表明消极情绪可以减轻饮食失调预防计划的效果。
