Normative bases for the Wechsler Adult Intelligence Scale-Revised (WAI
S-R) and the Wechsler Memory Scale-Revised (WMS-R) recently were exten
ded through age 97 with the publication of norms that permit computati
on of MAYO IQs for the WAIS-R and MAYO Memory Indices for the WMS-R. T
his study compares traditional Wechsler summary scores with their corr
esponding MAYO values in a clinical sample. MAYO summary scores are co
rrelated highly with traditional Wechsler values, and concordance rate
s are also strong. Despite their similarities MAYO summary scores and
traditional Wechsler values are not interchangeable. Cautions are disc
ussed relative to the use of both MAYO and traditional Wechsler IQs an
d Memory Indices.