Development and Validation of the Eating Pathology Symptoms Inventory (EPSI)
Development and Validation of the Eating Pathology Symptoms Inventory (EPSI)
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DOI：
10.1037/a0032639
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发表时间：
2013-09-01
影响因子：
3.6
通讯作者：
Watson, David
中科院分区：
文献类型：
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作者：
Forbush, Kelsie T.;Wildes, Jennifer E.;Watson, David
许多目前的饮食失调（ED）症状的测量有一个或多个严重的局限性，如不一致的因素结构或差的判别效度。本研究的目的是通过发展一种全面的多维度饮食病理学测量来克服这些局限性。最初的160个项目用于评估饮食病理学的20个维度。对学生样本（N = 433）和社区样本（N = 407）进行初始项目池管理，利用探索性和验证性因素分析确定测量的初步结构。修订后的测量方法适用于从专科ED治疗中心（N = 158）、门诊精神病诊所（N = 303）和学生（N = 227）招募的独立患者样本。分析揭示了一个8因素结构，其特征是身体不满、暴饮暴食、认知约束、过度运动、限制、净化、肌肉建设和对肥胖的消极态度。量表得分具有良好的收敛效度和判别效度；其他分析表明，大多数体重秤在性别和体重类别之间是不变的。进食病理症状量表评分具有良好的内部一致性（alpha系数中位数为0.84 - 0.89）和2- 4周的可靠性（平均重测r = 0.73）。目前的研究是迄今为止在急诊科领域进行的最全面规模的开发项目之一，将加强未来急诊科的基础和治疗研究。
Many current measures of eating disorder (ED) symptoms have 1 or more serious limitations, such as inconsistent factor structures or poor discriminant validity. The goal of this study was to overcome these limitations through the development of a comprehensive multidimensional measure of eating pathology. An initial pool of 160 items was developed to assess 20 dimensions of eating pathology. The initial item pool was administered to a student sample (N = 433) and community sample (N = 407) to determine the preliminary structure of the measure using exploratory and confirmatory factor analyses. The revised measure was administered to independent samples of patients recruited from specialty ED treatment centers (N = 158), outpatient psychiatric clinics (N = 303), and students (N = 227). Analyses revealed an 8-factor structure characterized by Body Dissatisfaction, Binge Eating, Cognitive Restraint, Excessive Exercise, Restricting, Purging, Muscle Building, and Negative Attitudes Toward Obesity. Scale scores showed excellent convergent and discriminant validity; other analyses demonstrated that the majority of scales were invariant across sex and weight categories. Eating Pathology Symptoms Inventory scale scores had excellent internal consistency (median coefficient alphas ranged from .84-.89) and reliability over a 2- to 4-week period (mean retest r = .73). The current study represents one of the most comprehensive scale development projects ever conducted in the field of EDs and will enhance future basic and treatment research focused on EDs.