Lehoux Pascale M, Howe Nina
Centre Hospitalier de l'Université de Montreal, Montréal, Quebec, Canada.
Br J Clin Psychol. 2007 Mar;46(Pt 1):47-66. doi: 10.1348/014466506x111285.
The role of perceived non-shared environmental influences and personality traits in the risk of developing bulimia nervosa (BN) was compared in 40 women with BN and their non-eating disordered sisters.
The two sisters were compared for (a) eating pathology, (b) perceived non-shared environmental factors (differential family relationships, developmental teasing, traumatic experiences), (c) personality traits (impulsivity, affective instability, narcissism), and (d) psychopathology (anxiety, depression).
Specific perceived non-shared risk factors (e.g. perceptions of teasing), nonspecific non-shared risk factors (e.g. insecure paternal attachment) and personality traits (e.g. narcissism) distinguished women with BN from sisters. In the final logistic regression, insecure paternal attachment predicted the risk for BN, while trends were apparent for narcissism and developmental teasing after controlling for psychopathology.
Our correlational cross-sectional design does not allow for investigation of direction of effects. However, it is an important first step in identifying possible perceived non-shared environmental influences and personality traits that may constitute vulnerability factors predisposing individuals to the development of BN. Findings are discussed in the light of existing models of risk factors for the etiology of BN.
比较40名神经性贪食症（BN）女性患者及其未患饮食失调症的姐妹中，感知到的非共享环境影响和人格特质在患BN风险中的作用。
对两姐妹进行以下方面的比较：（a）饮食病理学；（b）感知到的非共享环境因素（不同的家庭关系、成长过程中的取笑、创伤经历）；（c）人格特质（冲动性、情感不稳定性、自恋）；（d）精神病理学（焦虑、抑郁）。
特定的感知到的非共享风险因素（如对取笑的感知）、非特定的非共享风险因素（如与父亲的不安全依恋）和人格特质（如自恋）区分了患BN的女性和她们的姐妹。在最终的逻辑回归分析中，与父亲的不安全依恋预示着患BN的风险，而在控制精神病理学因素后，自恋和成长过程中的取笑也呈现出明显的趋势。
我们的相关横断面设计无法探究效应的方向。然而，这是识别可能构成使个体易患BN的脆弱因素的感知到的非共享环境影响和人格特质的重要第一步。根据现有的BN病因风险因素模型对研究结果进行了讨论。
