1 Theories and their Empirical Support in the Study of Intergenerational Family Relationships in Adulthood Teresa M. Cooney, PhD. University of Missouri Columbia, MO Pearl A. Dykstra, PhD. Erasmus University Rotterdam, the Netherlands Published in: M. A. Fine & F. D. Fincham (Eds.), Handbook of family theories: A content-based approach. (pp. 356-378). New York: Routledge/Taylor and Francis.