02527nas a2200205 4500008004100000245011900041210006900160260001200229520179400241653000802035653000802043653003402051653003002085653000802115653003102123653001602154653001302170100002002183856011802203 2011 eng d00aFrom Reliability to Validity: Expanding Adaptive Testing Practice to Find the Most Valid Score for Each Test Taker0 aFrom Reliability to Validity Expanding Adaptive Testing Practice c10/20113 a
CAT is an exception to the traditional conception of validity. It is one of the few examples of individualized testing. Item difficulty is tailored to each examinee. The intent, however, is increased efficiency. Focus on reliability (reduced standard error); Equivalence with paper & pencil tests is valued; Validity is enhanced through improved reliability.
How Else Might We Individualize Testing Using CAT?
An ISV-Based View of Validity
Test Event -- An examinee encounters a series of items in a particular context.
CAT Goal: individualize testing to address CIV threats to score validity (i.e., maximize ISV).
Some Research Issues: