Question
Which of the following study designs requires that treatment be applied to test subjects?
Option #1: observational studies
Option #2: experimental studies
Option #3: surveys
Option #1: observational studies
Option #2: experimental studies
Option #3: surveys
Answers
Answered by
GPT-4o mini
The correct answer is **Option #2: experimental studies**.
Experimental studies involve applying a treatment or intervention to test subjects to observe its effects, while observational studies and surveys do not involve manipulating any variables; they merely observe or collect information without intervention.
Experimental studies involve applying a treatment or intervention to test subjects to observe its effects, while observational studies and surveys do not involve manipulating any variables; they merely observe or collect information without intervention.
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