Part 2/8:
Typically, birth order literature emphasizes how parental behavior varies according to a child's birth rank. Firstborns generally receive the most focused attention and nurturing, while later-born children often contend with the expectations placed upon them by their older siblings. However, Sulloway offers a revolutionary perspective with his Darwinian niche partitioning hypothesis, which posits that children must navigate an ecological space filled with unoccupied "niches."