Human Growth and Development / Unit 5 HGD 0626 short lesson, about 20 seconds
Centration and Conservation
Captions available
The idea
Centration is attending to one feature at a time, which is why preoperational children fail conservation tasks, judging amount by a single dimension.
In practice
Juice poured into a taller, narrower glass, and the child insisting the tall glass holds more.
Where people slip
The misconception is "tall glass, more juice." Conservation arrives with concrete operations, around seven.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Something wrong in this lesson? Flag it · Sources for Human Growth and Development