Child Care, Socio-economic Status and Problem Behavior: A Study of Gene–Environment Interaction in Young Dutch Twins
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The influences of formal child care before age 4 on behavioral problems at 3, 5, and 7 years of age were assessed in 18,932 Dutch twins (3,878 attended formal child care). The effect of formal child care was studied on the average level of problem behavior and as moderator of genetic and non-genetic influences, while taking into account effects of sex and parental socio-economic status (SES). There was a small association between attending formal child care and higher externalizing problems, especially when SES was low. Heritability was lower for formal child care and in lower SES conditions. These effects were largest at age 7 and for externalizing problems. In 7 year-old boys and girls, the difference in heritability between the formal child care group of low SES and the home care group of high SES was 30 % for externalizing and ~20 % for internalizing problems. The decrease in heritability was explained by a larger influence of the environment, rather than by a decrease in genetic variance. These results support a bioecological model in which heritability is lower in circumstances associated with more problem behavior.
KeywordsChild care Internalizing problem behavior Externalizing problem behavior Gene–environment interaction Twins Genetics
This research was supported by ZonMw, grant number 920-03-268, and “Spinozapremie” (NWO/SPI 56-464-14192); “Twin-family database for behavior genetics and genomics studies” (NWO 480-04-004); Genetics of Mental Illness: European Research Council (ERC-230374, PI Boomsma); Genetic influences on stability and change in psychopathology from childhood to young adulthood (NWO/ZonMW 91210020), NWO (VENI 916-76-125; PI Middeldorp) and ERC Starting Grant 284167 (PI Vink).
Conflict of Interest
The authors declare no conflict of interest.
Human and Animal Rights and Informed Consent
The data collection was approved by the Medical Research Ethics Committee of the VU University Medical Centre.
- Achenbach TM (1991) Manual of the child behavior checklist/4–18 and 1991 profile. University of Vermont, Department of Psychiatry, BurlingtonGoogle Scholar
- Achenbach TM (1992) Manual of the child behavior checklist/2–3 and 1992 profile. University of Vermont, Department of Psychiatry, BurlingtonGoogle Scholar
- Crosby DA, Dowsett CJ, Gennetian LA, Huston AC (2010) A tale of two methods: comparing regression and instrumental variables estimates of the effects of preschool child care type on the subsequent externalizing behavior of children in low-income families. Dev Psychol 46:1030–1048PubMedCentralPubMedCrossRefGoogle Scholar
- de Kruif REL, Riksen-Walraven JM, Deynoot-Schaub MJJM, Helmerhorst KOW, Tavecchio LWC, Fukkink RG (2009) Pedagogische kwaliteit van de opvang voor 0- tot 4-jarigen in Nederlandse kinderdagverblijven in 2008 [Educational quality of day care for 0 till 4 year olds in Dutch child care centers] Nederlands Consortium Kinderopvang OnderzoekGoogle Scholar
- Neale MC, Boker SM, Xie G, Maes HH (2006) Mx: statistical modeling, 6th edn. Department of Psychiatry, Medical College of Virginia, RichmondGoogle Scholar
- Spivack G, Spotts J (1966) The Devereux Child Behavior (DCB) Rating Scale. Devon, A: The Devereux FoundationGoogle Scholar
- van IJzendoorn MH, Tavecchio LWC, Riksen-Walraven JM (2004) De kwaliteit van de Nederlandse kinderopvang [Quality of Dutch child care]. Boom, AmsterdamGoogle Scholar