Answer the Question. -Double Blinding Is Used in an Experiment to Avoid Which

question 219

Multiple Choice

Answer the question.
-Double blinding is used in an experiment to avoid which of the following problems?

• A)If improvement is observed in a patient, it is difficult to know whether this is due to the treatment or the placebo effect
• B)If the researcher knows that the patient received the treatment, the researcher may also experience health changes
• C)If the patient knows that he received the placebo and not the treatment he may be angry and fail to tell the truth
• D)If an experimenter knows whether the patient has received the treatment or the placebo, this may influence how he or she questions the patient