The factor the researcher changes (e.g., dosage of a new medication).
Correlation does not equal causation. Just because two things happen together (like ice cream sales and sunburns) doesn't mean one caused the other (the sun caused both). types of studies in psychology
Following the same group of people over a long period (years or even decades). The factor the researcher changes (e
One variable goes up while the other goes down. 3. Experimental Studies The factor the researcher changes (e.g.