To use WCF as WCF Rest service you have to enable webHttpBindings. It support HTTP GET and POST verbs by [WebGet] and [WebInvoke] attributes respectively. To enable other HTTP verbs you have to do some configuration in IIS to accept request of that particular verb on .svc files.
Concurrent validity is a measure of how well a particular test correlates with a previously validated measure. It is commonly used in social science, psychology and education. Don't miss these related articles:
1 Validity The extent to which an assessmentinstrument measures what it is supposed tomeasure Reliability The consistency of assessment results Reliability is a necessary but not sufï¬cientcondition for validity.About validity. . . Face Validity â¢ Not technically a facet of validity, but refers toa test âappearingâ to measure what it isdesigned to measure. â¢ Content-based evidence of validity is acquiredthrough a systematic and technical analysis ofthe test content, face validity only involves thesuperï¬cial appearance of a test.