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This is a type of study that might be biased by the patient knowing that they are receiving a treatment.

A. Blind study
B. Double-blind study
C. Positive control study
D. Prospective study


Sagot :

Final answer:

In a double-blind study, both the subjects and researchers are unaware of who is receiving the treatment or the placebo, reducing biases like the placebo effect.


Explanation:

Blinding is a crucial technique in research studies to prevent bias. In a double-blind study, neither the subjects nor the researchers know who is receiving the treatment or the placebo. This setup helps eliminate biases like the placebo effect that can influence study outcomes.


Learn more about Experimental Bias in Research Studies here:

https://brainly.com/question/14294580


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