Which of the Following Best Explains Why Early Cross-Sectional Research

question 47

Multiple Choice

Which of the following best explains why early cross-sectional research found that intelligence declines with age?

• A) Cross-sectional studies compare groups of people over an extended length of time.
• B) Early cross-sectional studies were limited because a large number of participants withdrew from the studies.
• C) Cross-sectional studies compare groups of people who are the same age.
• D) Early cross-sectional studies compared people of different eras who had varying levels of education and different family experiences.

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