Assertion: placebo | /r/AtLocation | drug testing
Facets:
value: to resemble an active medication
type: PURPOSE
Source sentences:
text: In drug testing and medical research, a placebo can be made to resemble an active medication or therapy so that it functions as a control; this is to prevent the recipient or others from knowing (with their consent) whether a treatment is active or inactive, as expectations about efficacy can influence results.