empirical evidence means that research must measure what it purports to measure.
empirical evidence means that research must measure what it purports to measure.
means that research must measure what it purports to measure?
empirical evidence
face validity is the extent to which a test is subjectively viewed as covering the concept it purports to measure. it refers to the transparency or relevance of a test as it appears to test participants. in other words, a test can be said to have face validity if it "looks like" it is going to measure what it is supposed to measure. for instance, if a test is prepared to measure whether students can perform multiplication, and the people to whom it is shown all agree that it looks like a good test of multiplication ability, this demonstrates face validity of the test. face validity is often contrasted with content validity and construct validity.
face validity
measuring the prevalence of homosexuality may present difficulties. the research must measure some characteristic that may or may not be defining of sexual orientation. the class of people with same-sex desires may be larger than the class of people who act on those desires, which in turn may be larger than the class of people who self-identify as gay/lesbian/bisexual.
homosexuality in society