Birth Order Differences in Neurodevelopment Emerge Within the First Year (IMAGE)
Caption
A large Japanese cohort study used a within-family design to compare early neurodevelopmental outcomes among pairs of firstborn and second-born singleton children enrolled in the Japan Environment and Children’s Study (JECS).
The findings suggest that small but consistent birth order differences in neurodevelopment are observable within the first year of life. Differences in parental engagement were also observed between siblings.
Credit
Dr. Akiko Tsuchida from the University of Toyama, Japan
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