Multiple Choice
Dr. Irwin is testing the same individuals repeatedly over time as part of a research study, while Dr. Jenner is comparing the performance of different people of various ages at the same time. Dr. Irwin is using a _________ research design; Dr. Jenner is using a ________ design.
A) cross-sectional; longitudinal
B) longitudinal; cross-sectional
C) sequential; simultaneous
D) sequential; cross-sectional
Correct Answer:

Verified
Correct Answer:
Verified
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