Validity Is Whether an Instrument Measures What It Is Supposed

Multiple Choice

Validity is whether an instrument measures what it is supposed to measure; reliability is whether an instrument gets consistent results across administrations. If spouses fill out a self-report measure of stress from their spouse's point of view, and the spouses' scores match closely, we can say that the self-report inventory is​

A) ​valid.
B) ​reliable.
C) ​both valid and reliable.
D) ​neither reliable nor valid.