ABSTRACT
The kinds of data that developmental psychologists collect are often inherently interdependent. For example, the subdiscipline has been defined, in part, as the study of the changes that occur within individuals across the life span (e.g., Baltes, Reese, & Nesselroade, 1977) and developmentalists often investigate interrelations between individuals and their families and peers. These kinds of data are either interdependent within individuals, across relationship partners, or both. As such, developmental researchers and methodologists who specialize in the analysis of nonindependent data should be natural partners.
