Lexicographers, on the other hand, claim their expertise as descriptive—i.e., documenting how grammar is diverse and changing in society, even when it deviates from what grammarians might find ...

Psychology and ethics are often viewed as discrete subjects: psychology is descriptive while ethics is prescriptive; the former looks at what is while the latter examines what ought to be. A ...

A useful analogy regarding the difference between descriptive and prescriptive is this: a person visits a doctor where she is told that she has acid reflux. That’s a description.