Twin differences in birth anthropometrics and cognitive performance

In this Video Abstract, Dr. Robert Eves discusses his co-authored JCPP paper ‘Anthropometric differences between twins at birth and their association with later cognitive performance’. Past studies indicate significant associations between birth anthropometrics, such as relative birthweight or head circumference, and later cognitive performance. Using twin data, we investigated whether these associations are confounded by genetic and environmental factors. Additionally, we determined whether the association of within twin differences in birth anthropometrics and cognitive performance is nonlinear or moderated by factors such as zygosity or age at assessment.

Learning Objectives

1. Explore whether within twin pairs, if differences in birth anthropometrics, such as weight and head circumference, linearly or nonlinearly predict later differences in cognitive performance.

2. Examine if the association of within twin pair differences in birth anthropometrics and cognitive performance diminish when both twins are born with relatively high birth anthropometric values.

3. Consider if zygosity, gestational age, or age at assessment moderate the association of within twin pair differences in birth anthropometrics differences and later cognitive performance.

Paper Link https://doi.org/10.1111/jcpp.70170

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