As we mentioned above, there are several different methods or theories used to study the development of a child. One of the main arguments of child development is the ecological systems theory. Also known as the development in context or human ecology theory, this idea studies four types of environmental systems.
The four systems studied in the ecological systems theory are the microsystem, mesosystem, exosystem, and macrosystem. In each of these systems are roles, rules, and norms that strongly influence a child’s development. This theory is profoundly influential, and each of these systems is considered a part of the life course spanning from childhood through adolescence to adulthood.