Relational Developmental Systems and Quantitative Behavior Genetics: Alternative or Parallel Methodologies?

Abstract

The two methodologies presented in this special issue—relational developmental systems and quantitative behavior genetics—are not competing alternatives in the exploration of genetic–environmental interplay, but parallel approaches having distinct focuses and distinct goals. This commentary explores several conceptual issues that can, and have in the past, result in confusions about the nature of each methodology, and their relation to each other.