This article investigates the adequacy of the Heaton-Grant-Matthews norms i
n correcting age and education effects in the Halstead Reitan Neuropsycholo
gical Battery. Two hundred and ninety neurological and 346 psychiatric pati
ents were administered the Halstead Reitan Neuropsychological Battery. Raw
scores were converted to standard scores using the Heaton-Grant-Matthews no
rms. Ten percent of the variance in standard score profiles could be predic
ted by patient age and education. The primary effect of age was to decrease
the overall level of the profile; the primary effect of education was to i
ncrease relative scores on the Aphasia test. When these standard scores wer
e converted to age- and education-corrected T-scores, less than I % of the
variance could be predicted by age and education. When individual tests wer
e examined, the Heaton-Grant-Matthews norms failed to correct 2% of the var
iance in the Speech Sounds test. Discussion focuses on the usefulness of th
e Heaton-Grant-Matthews norms in interpreting performance on the Halstead R
eitan Neuropsychological Battery. 1999 National Academy of Neuropsychology.
Published by Elsevier Science Ltd.