Alcohol Exposure In Utero and Child Academic Achievement

Area of Science:

• Behavioral genetics
• Developmental psychology
• Public health

Background:

• Maternal alcohol consumption during pregnancy is a significant concern.
• The precise impact of prenatal alcohol exposure on child academic achievement remains debated.
• Understanding dose, pattern, and duration effects is crucial.

Purpose of the Study:

• To investigate the causal effect of prenatal alcohol exposure on child academic achievement.
• To differentiate the impact of any exposure versus specific dose, pattern, and duration.
• To explore the role of maternal and child genotypes in this relationship.

Main Methods:

• Utilized a genetic variant (ADH1B) in maternal alcohol metabolism as an instrumental variable (IV) for alcohol exposure.
• Controlled for the child's genotype on the same variant.
• Employed Ordinary Least Squares (OLS) and IV regression analyses.

Main Results:

• OLS regressions showed ambiguous associations between prenatal alcohol exposure and academic attainment, influenced by socio-economic factors.
• IV estimates revealed significant negative effects of prenatal alcohol exposure on child educational attainment.
• The observed effects were robust across various model specifications and solely attributable to maternal genotype.

Conclusions:

• Prenatal alcohol exposure has a detrimental causal effect on child academic achievement.
• Maternal genetic factors, specifically variants in ADH1B, play a critical role in mediating the impact of alcohol exposure.
• Child's genotype on ADH1B does not influence academic outcomes related to prenatal alcohol exposure.