Urie Bronfenbrenner's Theory of Human Development: Its Evolution From Ecology to Bioecology

TLDR

Bronfenbrenner’s theory progressed through three phases: an initial ecological model (1973‑1979), rapid revisions emphasizing individual and developmental processes (1980‑1993), and a final bioecological model with proximal processes and the PPCT framework (1993‑2006). This paper aims to describe the evolution of Bronfenbrenner’s theory from ecological to bioecological across these three phases. The authors trace the theory’s development by outlining key modifications, the definition of proximal processes, and the introduction of the Process‑Person‑Context‑Time model. They conclude that scholars must specify which version of the theory they employ to avoid theoretical incoherence.

Abstract

We describe the evolution, over three phases, of Bronfenbrenner's theory from an ecological to a bioecological theory. Phase 1 (1973–1979) culminated in the publication of The Ecology of Human Development (1979). Phase 2 (1980–1993) saw almost immediate modifications to the theory, with more attention paid to the role of the individual and greater concern with developmental processes. In Phase 3 (1993–2006), proximal processes were defined and placed at the heart of bioecological theory, and from 1998, the Process‐Person‐Context‐Time ( PPCT ) model was described as the theory's appropriate research design. Given the extent of these changes, and to avoid theoretical incoherence, scholars should be cautious about stating that their research is based on Bronfenbrenner's theory without specifying which version they are using .