Dr. Jamshed wants to see if person's IQ changes as they get older. To do this he takes three groups of subjects. Group i is made up of 10 years old, and Group III of 25 years old. Dr. Jamshed tests all three groups of their IQ level. The design of this experiment is called:
Correct answer: D. cross sectional study
- A. longitudinal study
- B. more information is needed to determine the design of the experiment
- C. Gesell's dome
- D. cross sectional study
Explanation
Testing separate age groups once compares people of different ages at a single time, which is a cross-sectional design. A longitudinal study would test the same participants repeatedly as they grow older.
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