Human Growth and Development / Unit 1 HGD 0010 short lesson, about 20 seconds
Stage Theories
Captions available
The idea
Stage theories, such as Piaget's and Erikson's, describe development as brief bursts of rapid change between long stretches of stability.
In practice
A staircase: long flat landings joined by short, steep climbs to the next level.
Where people slip
Development is also assumed to be progressive. Moving back to earlier forms, called regression, can signal that something is wrong.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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