Celebrate Valentine's Day with this acrostic poem activity. Think of a word or phrase that starts with each letter of the word valentine.. Download.
The state of being valid, authentic or genuine. validity(Noun) Having legal force. validity(Noun) A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).
Validity is the extent to which the construct measures what it says it is measuring. The use of a blood pressure cuff is considered to be valid because it is measuring blood pressure, not something else. Using an opthalmoscope to measure blood pressure would not be a valid method.