What developmental theory proposes stages that individuals go through over their lifespan?

• A. Behavioral theory
• B. Cognitive theory
• C. Stage theory of development
• D. Ecological systems theory

Answer: (C)

The stage theory of development is a framework that proposes that individuals progress through a series of distinct stages as they grow and develop throughout their lifespan. This theory is founded on the idea that development is a systematic process where each stage represents a specific set of challenges and tasks that must be completed before moving on to the next stage. Prominent theorists, such as Erik Erikson and Jean Piaget, have formulated their own stage theories, highlighting how individuals evolve in their psychological and cognitive capacities as they age.

In contrast, behavioral theory focuses on observable behaviors and the influence of the environment on behavior change, rather than structuring development into stages. Cognitive theory, while discussing how thinking processes develop, does not necessarily organize development into distinct stages in the same way that stage theory does. Ecological systems theory emphasizes the different environmental systems and their interactions, rather than outlining a developmental progression through stages. Thus, the stage theory of development is uniquely positioned to describe the sequential and progressive nature of human development over the lifespan.