Human Growth and Development / Unit 13 HGD 1825 short lesson, about 20 seconds
Denney's Model
Captions available
The idea
Nancy Denney's model holds that abilities peak in early adulthood and then decline, but practice raises the level each person reaches.
In practice
Two sixty-year-olds on the same downward slope, the better-educated one starting higher and taking longer to reach impairment.
Where people slip
More education means a higher peak and a longer way down before impairment is diagnosed.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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