Depressive symptoms in children and adolescents: Etiological links between normality and abnormality: A research note
Depressive symptoms in children and adolescents: Etiological links between normality and abnormality: A research note
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DOI：
10.1111/j.1469-7610.1997.tb01604.x
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发表时间：
1997-10-01
期刊：
影响因子：
--
通讯作者：
Eley, TC
中科院分区：
文献类型：
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作者：
Eley, TC
这份研究报告考虑了正常和异常的抑郁症状是否是由相同或不同的病因引起的。个体差异的遗传力与极端群体遗传力的比较，沿着与使用多个截止定义异常群体，可以用来回答这个问题，并弥合差距之间的维度和分类的发展精神病理学的方法。以这种方式分析了395对同性双胞胎儿童的抑郁症状。遗传因素对个体差异（h（2）= 0.48）和使用多个截止值（h（g）（2）= 2.0-2.3）的极端群体成员关系的贡献程度相似。共同的环境并没有显着的贡献，在任何分析，但显示出一种趋势，在极端群体成员的作用更大。这些结果与以前的数据吻合得很好。
This research note considers whether normal and abnormal depressive symptoms are caused by the same or differing etiologies. The comparison of the heritability of individual differences with extreme group heritability, along with the use of multiple cut-offs to define abnormal groups, can be used to answer this question and to bridge the gap between dimensional and categorical approaches to developmental psychopathology. Depressive symptoms from 395 same-sex child twin pairs were analysed in this way. Genetic factors contributed to a similar extent both to individual differences (h(2) = .48) and to extreme group membership using multiple cut-offs (h(g)(2) = 2.0-2.3). The common environment did not contribute significantly in any of the analyses but showed a trend for a greater role in extreme group membership. These results are in good agreement with previous data.