ORCHIDS: an Observational Randomized Controlled Trial on Childhood Differential Susceptibility

BMC Public Health

Bram Orobio de Castro¹  WalterCHJ Matthys¹  Geertjan Overbeek¹  Joyce Weeland¹  Rabia R Chhangur¹ 

[1] Department of Developmental Psychology, Utrecht Centre for Child and Adolescent Studies, Utrecht University, PO Box 80.140, Utrecht, 3508 TC, The Netherlands

关键词: Differential susceptibility;    Gene-environment interaction;    Parenting;    Child behavior;    Externalizing behavior;    Randomized controlled trial;   

Others  :  1162918
DOI  :  10.1186/1471-2458-12-917

 received in 2012-09-25, accepted in 2012-10-08,  发布年份 2012

【 摘 要 】

Background

A central tenet in developmental psychopathology is that childhood rearing experiences have a major impact on children’s development. Recently, candidate genes have been identified that may cause children to be differentially susceptible to these experiences (i.e., susceptibility genes). However, our understanding of the differential impact of parenting is limited at best. Specifically, more experimental research is needed. The ORCHIDS study will investigate gene-(gene-)environment interactions to obtain more insight into a) moderating effects of polymorphisms on the link between parenting and child behavior, and b) behavioral mechanisms that underlie these gene-(gene-)environment interactions in an experimental design.

Methods/Design

The ORCHIDS study is a randomized controlled trial, in which the environment will be manipulated with an intervention (i.e., Incredible Years parent training). In a screening, families with children aged 4–8 who show mild to (sub)clinical behavior problems will be targeted through community records via two Dutch regional healthcare organizations. Assessments in both the intervention and control condition will be conducted at baseline (i.e., pretest), after 6 months (i.e., posttest), and after 10 months (i.e., follow-up).

Discussion

This study protocol describes the design of a randomized controlled trial that investigates gene-(gene-)environment interactions in the development of child behavior. Two hypotheses will be tested. First, we expect that children in the intervention condition who carry one or more susceptibility genes will show significantly lower levels of problem behavior and higher levels of prosocial behavior after their parent(s) received the Incredible Years training, compared to children without these genes, or children in the control group. Second, we expect that children carrying one or more susceptibility genes will show a heightened sensitivity to changes in parenting behaviors, and will manifest higher emotional synchronization in dyadic interchanges with their parents. This may lead to either more prosocial behavior or antisocial behavior depending on their parents’ behavior.

Trial registration

Dutch Trial Register (NTR3594)

【 授权许可】

   
2012 Chhangur and Weeland et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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