Cross Sectional Studies
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Researchers study the intellectual abilities of
individuals according to ages to observe
possible regression or patterns
Cross sectional studies is a way in which
people of differing ages are compared amongst
each other.
In studies researchers have found that older
individuals give fewer correct answers than
younger adults.
David Wechsler
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Creator of widely used intelligence tests
therefore stated his theory that
“the decline of mental ability with age is part of
the general aging process of the organism as a
whole.”