09 October 2019

The effect of older siblings on language development as a function of age difference and sex

This research investigated if children with an older sister have better language abilities than children with an older brother, especially when there is a large age gap between the two siblings. The study found that children with an older sister had better language skills than those with an older brother, but the age gap between siblings was not associated with language skills. These results suggest that previous research finding a negative effect of older siblings on language development may be entirely due to the role of older brothers.