Minnis Helen, Reekie Joanne, Young David, O'Connor Tom, Ronald Angelica, Gray Alison, Plomin Robert
Section of Psychological Medicine, University of Glasgow, Glasgow, UK.
Br J Psychiatry. 2007 Jun;190:490-5. doi: 10.1192/bjp.bp.105.019745.
Despite current interest in attachment disorder, there is concern about its discrimination from other disorders and an unproven assumption of an environmental aetiology.
To test whether behaviours suggestive of attachment disorder are distinct from other childhood behavioural and emotional problems and are solely environmentally determined.
In a community sample of 13,472 twins, we carried out factor analysis of questionnaire items encompassing behaviours indicative of attachment disorder, conduct problems, hyperactivity and emotional difficulties. We used behavioural genetic model-fitting analysis to explore the contribution of genes and environment.
Factor analysis showed clear discrimination between behaviours suggestive of attachment disorder, conduct problems, hyperactivity and emotional problems. Behavioural genetics analysis suggested a strong genetic influence to attachment disorder behaviour, with males showing higher heritability.
Behaviours suggestive of attachment disorder can be differentiated from common childhood emotional and behavioural problems and appear to be strongly genetically influenced, particularly in boys.
尽管目前人们对依恋障碍很感兴趣，但对于它与其他障碍的区分以及环境病因学这一未经证实的假设仍存在担忧。
检验提示依恋障碍的行为是否与其他儿童行为和情绪问题不同，以及是否仅由环境决定。
在一个包含13472对双胞胎的社区样本中，我们对涵盖提示依恋障碍、品行问题、多动和情绪困难行为的问卷项目进行了因子分析。我们使用行为遗传模型拟合分析来探究基因和环境的作用。
因子分析显示提示依恋障碍的行为、品行问题、多动和情绪问题之间有明显区分。行为遗传学分析表明基因对依恋障碍行为有很强的影响，男性的遗传度更高。
提示依恋障碍的行为可以与常见的儿童情绪和行为问题区分开来，并且似乎受到很强的基因影响，尤其是在男孩中。
