Assertion: linguist's language | /r/HasProperty | mental
Facets:
value: on the basis of criteria
type: CAUSE
value: essentially
type: DEGREE
Source sentences:
text: Because languages can only be studied through human behavior, linguistics, like psychology, is further classified as a behavioral science; and because language is essentially mental, linguistics is also a cognitive science.
text: Thus far we have seen how attempts to reject the claim that language is a mental entity on the basis of criteria (2) and (3) fail.