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lozanna [386]
3 years ago
11

Dr. spock is testing the same individuals repeatedly over time as part of a research study, while dr. smooth is comparing the pe

rformance of different people of various ages at the same time. dr. spock is using a ___________ research design, while dr. smooth is using a ____________ research design.
Social Studies
1 answer:
jonny [76]3 years ago
4 0
I believe the answer is: <span>longitudinal; cross-sectional
Longitudinal study is initiated if the researchers want to collect long term data from the subject as over  time (as they grow up).
Cross-sectional study on the other hand is initiated if the researchers want to know whether a certain things only affect a specific population.

</span>
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