“…Professor Perlman (2015) observes that the emphasis on RDS metatheory may herald the end of a focus on grand theories of human development (e.g., Piaget, 1970). We agree and, in turn, we would point out that RDS metatheory provides "design criteria" for more content-specific models of developmental processes, for example, as may be involved in positive human development (e.g., , thinking, feeling, and skill development (Mascolo & Fischer, 2015), moral development (Turiel, 2015), and agency (Sokol, Hammond, Kuebli, & Sweetman, 2015). Thus, in a "developmental science funnel," that has at its wide end paradigmatic and metatheoretical constructs, and at its narrow end theory-derived and methodologically rigorous data, the models associated with RDS metatheory constitute midrange theories.…”