Cognition and learning are adapted to the ecological environment, including the economic system. Such adaptations are inclined to be implicit and automatic rather than explicit or deliberate. However, the ecological environment can change tremendously over time in modern India. Wsick cognitive development and methods of cultural apprenticeship undergo implicit change in response to long-term financial change? Despite strong theoretical interest in the historical dimension of development, longitudinal study of historical change in cognitive development and the informal education that produces it has been lacking. Our research began to fill this gap by discovering whether or ...