What type of validity is assessed through expert verification of an instrument?

Face validity is assessed through expert verification of an instrument because it refers to the degree to which a test appears, at face value, to measure what it is intended to measure. This type of validity is concerned with the subjective judgment of experts who review the instrument's content and determine whether it seems suitable and relevant for the intended purpose. When experts evaluate an instrument and agree that it covers the domain of interest appropriately, the instrument is considered to have good face validity.

In contrast, concurrent validity involves comparing the results of a new instrument to those of an established one measuring the same construct. Construct validity focuses on whether the instrument truly measures the theoretical concept it’s intended to assess, often established through correlational studies or factor analysis. Divergent validity, which is a specific type of construct validity, examines whether the instrument does not correlate with measures of different constructs, thereby confirming that it is measuring the intended trait rather than something else.