A Scientist/Practitioner’s Perspective of the Reynolds Intellectual Assessment Scales—Second Edition, by Cecil R. Reynolds and Randy W. Kamphaus (2015)

For serial evaluations with the RIAS-2, there is an appendix that contains reliable change scores by age groups across four significance levels. The RIAS-2 is not dependent upon reading ability and is comparable to lengthier intellectual test batteries in the prediction of academic achievement based upon comparison with the Academic Achievement Battery (Messer, 2014). From the perspective of a scientist-practitioner who has utilized the RIAS, the RIAS-2 has a number of advantages over other intellectual assessment instruments: (1) it provides for continuity of measurement of intellectual functioning across the life span, (2) it has been developed based upon solid evidence-based practice guidelines, (3) the authors have been responsive to feedback from users in the field, (4) it is efficient in terms of administration and scoring time, and (5) the overall direct costs to the clinician/researcher are substantially less than other intellectual assessment instruments.