Assertion: drug addiction's effect | /r/HasProperty | valued by the user
Facets:
Source sentences:
text: Many substances are capable of acting on a biological system, and whether a particular substance comes to be considered a drug of abuse depends in large measure upon whether it is capable of eliciting a “druglike” effect that is valued by the user.
text: This requires a frame of reference that recognizes that almost any substance can be considered a drug, that almost any drug is capable of abuse, that one kind of abuse may differ appreciably from another kind of abuse, and that the effect valued by the user will differ from one individual to the next for a particular drug, or from one drug to the next drug for a particular individual.