TY - JOUR
T1 - Exploration of the Raven APM - National Adult Reading Test Discrepancy as a Measure of Intellectual Decline in Older Persons
AU - van den Berg, Esther
AU - Nys, Gudrun M. S.
AU - Brands, Augustina M. A.
AU - Ruis, Carla
AU - van Zandvoort, Martine J. E.
AU - Kessels, Roy P. C.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Previous studies have shown that the discrepancy between performance on fluid and crystallized intelligence measures may serve as an indicator for intellectual decline. The validity of this procedure in older persons is unknown. The present study developed a multiple regression equation, to predict the Raven Advanced Progressive Matrices (APM) score from the National Adult Reading Test (NART) score and demographic variables in a large sample of healthy older persons (n=270). The discrepancy between the predicted and observed Raven APM scores was transformed into a percentile distribution as an indicator of intellectual decline, which can be used in clinical practice. The validity of the procedure was further examined by comparing the proportion of persons with a significant decline (at the 1 and 1.65 SD level) between two older patient samples (87 patients with cerebral stroke and 387 patients with diabetes mellitus) by means of (2) tests. There was a significantly higher rate of intellectual decline at the 1 SD (below average) and 1.65 SD (impaired) cutoff levels for patients with stroke compared with patients with diabetes (stroke, 34% and 14%; diabetes, 16% and 5%, p
AB - Previous studies have shown that the discrepancy between performance on fluid and crystallized intelligence measures may serve as an indicator for intellectual decline. The validity of this procedure in older persons is unknown. The present study developed a multiple regression equation, to predict the Raven Advanced Progressive Matrices (APM) score from the National Adult Reading Test (NART) score and demographic variables in a large sample of healthy older persons (n=270). The discrepancy between the predicted and observed Raven APM scores was transformed into a percentile distribution as an indicator of intellectual decline, which can be used in clinical practice. The validity of the procedure was further examined by comparing the proportion of persons with a significant decline (at the 1 and 1.65 SD level) between two older patient samples (87 patients with cerebral stroke and 387 patients with diabetes mellitus) by means of (2) tests. There was a significantly higher rate of intellectual decline at the 1 SD (below average) and 1.65 SD (impaired) cutoff levels for patients with stroke compared with patients with diabetes (stroke, 34% and 14%; diabetes, 16% and 5%, p
U2 - 10.1080/09084282.2012.670148
DO - 10.1080/09084282.2012.670148
M3 - Article
C2 - 23373679
SN - 2327-9095
VL - 20
SP - 7
EP - 14
JO - Applied neuropsychology. Adult
JF - Applied neuropsychology. Adult
IS - 1
ER -