“…Nonparental changes, such as the departure of grandparents, aunts, and cousins, are associated with early childhood cognitive scores in a nationally representative sample of children born in 2001 (Mollborn, Fomby, and Dennis 2012). Building on Mollborn et al's (2012) finding that extended household transitions were more common than parent and partner transitions among children younger than age 2, I show in this article that this pattern of greater exposure to changes involving nonparent household members holds among children up to age 15 across multiple cohorts from 1984 to 2010.…”