Stage theorists assume

• A. Qualitative Changes Between Stages Occur
• B. Quantitative Changes Between Stages Occur
• C. Development Is A Continuous Process
• D. All Stages Are Identical And Equally Complex

Answer: (A)

Stage theorists argue that development unfolds through distinct, qualitative changes in thinking at specific points, not just a steady accumulation of skills. Each stage reorganizes how a person understands and approaches problems, so transitions involve a fundamental shift in structure—for example, moving from concrete, here-and-now reasoning to more abstract thinking. This is why qualitative changes between stages are the best fit for what stage theories propose. If development were continuous, or if all stages were identical in complexity, the idea of stepping from one distinct stage to another wouldn’t hold.