Theories and Models of Development

Behind every development policy lies a theory about how progress happens and why some places are poor. These theories are not merely academic; they justify vast programs of aid, trade, and reform, and they compete for influence in international institutions. Understanding the main schools of thought reveals the assumptions that shape real-world development strategy.

Modernization theory, dominant in the 1950s and 1960s, held that all societies pass through similar stages on a single path from "traditional" to "modern." The economist Walt Rostow famously described five stages, culminating in an "age of high mass consumption," with a critical "take-off" stage in which growth becomes self-sustaining. On this view, poor countries are simply at an earlier stage and can catch up by adopting West