A double-blind research design is one in which
A. neither the subject nor the investigator know what treatment had been administered.
B. only the investigator knows what treatment has been administered.
C. the subject does not know which treatment he/she has been administered.
D. both the subject and the investigator know what treatment had been administered.
Answer: A
You might also like to view...
Identify the causes and contributing factors of macular degeneration
What will be an ideal response?
An increased level of ________ indicates prostate disease or possibly prostate cancer
A) fluorescent treponemal antibody B) prostate-specific antigen C) semen D) testosterone
During inhalation, the ________ muscles between the ribs pull the ribs up and out
A) diaphragm B) intercostal C) phrenic D) pleura
Drug users develop ________ to a drug over time, which means they need more of the drug to produce the same effect
A) resistance B) immunity C) adaptation D) tolerance