MCAT® ExamPsychological, Social, and Biological Foundations of BehaviorEasy
A researcher is investigating the impact of a specific neurotransmitter on mood regulation. They measure the levels of this neurotransmitter in different brain regions of participants and correlate these levels with self-reported mood scores. Which type of research method is this?
- ACase study
- BCorrelational study
- CLongitudinal study
- DExperimental study
Show answer & explanationAnswer & explanation
Correct answer: B. Correlational study
Correlational studies examine the relationship between two or more variables without manipulating them. In this scenario, the researcher is observing existing neurotransmitter levels and mood scores to see if a relationship exists.
Why the other options are wrong
- A. Case studies involve in-depth investigation of a single individual, group, or event.
- C. Longitudinal studies track the same participants over an extended period.
- D. Experimental studies involve manipulating an independent variable to observe its effect on a dependent variable.
Correlational Study
A research method that examines the relationship between two or more variables without manipulating any of them.
- Identifies patterns and relationships
- Does not establish causation
- Variables are measured, not manipulated
Memory trick: Correlation doesn't cause, just relates.