Dr. McLean has designed a study to test the cognitive skills of people in their 30s, 50s, and 70s, where data is collected over the course of a day through a series of tests. What type of research approach is Dr. McLean using?

Cross-Sectional

Explanation:

Cross-sectional can be defined as a form of observation study design in which data are been collected throug a series of test and the data collected from the group of people are analyzes at specific point in time in which the researcher measures the outcome and the exposures in the study participants by comparing different population groups at a single point in time in order to test or for the purpose of testing the cognitive skills of people.

Therefore the type of research approach is Dr. McLean using is CROSS- SECTIONAL APPROACH

Cross-sectional

Explanation:

cross-sectional research approach otherwise known as cross-sectional analysis is a type of observational study  used for population-based surveys to analyze data from a population, or a representative subgroup, at a specific point in time. The participants in a cross-sectional study are just selected based on the involvement and exclusion criteria set for the study. Once the participants have been selected for the study, the investigator follows the study to assess the exposure and the outcomes. The above explanation of clearly indicates that Dr. McLean is clearly employing the cross sectional research approach as he his dealing with some certain subset of a population based on age.

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