The purpose of this study was to develop and norm a pediatric version
of the Consonant Trigrams Test (CTT). Participants were 714 students (
326 males, 388 females) between the ages of 9 and 15 years. The estima
ted average verbal intelligence of the subject sample, as measured by
the WISC-III Vocabulary subtest, was consistently at or near average.
Pilot testing indicated that it was too difficult for the children to
count backwards by threes; counting backwards by one was used instead,
because it was less aversive and provided enough of a distraction. Re
sults of the present study showed that scores improved with age, but d
id not differ significantly according to sex. Even though our test was
simpler than the adult version, scores did not reach adult levels, ba
sed on data previously published by Stuss and colleagues. This undersc
ores the need for a separate CTT for children.