Psychology / Unit 8 Psych 0861 short lesson, about 20 seconds
Longitudinal Design
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The idea
A longitudinal design follows the same individuals over an extended period, measuring them repeatedly.
In practice
One group is tested at twenty, fifty, and eighty across sixty years.
Where people slip
Longitudinal designs avoid the cohort confound and lose participants selectively, which biases the sample.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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