"In particular, results were strongest for the Vocabulary and Similarities subtests, intermediate for the Information subtest, and lowest for the Comprehension and Word Reasoning subtests.
The old-old subjects differed from adults on all subtests (except for subtest 1) and from the young-old on subtests 2 and 6.
We argue that these factors may have affected students' learning behaviour more during their preparation for the third subtest than for the other two subtests.
The K-BIT is a brief measure of verbal and nonverbal intelligence designed for children aged 4 years and older, which has both established reliability and validity, with internal consistency reliabilities averaging.94 for the overall K-BIT IQ Composite,.93 for the Vocabulary subtest, and.88 for the Matrices subtest [ 17, 18].
The published WASI test retest reliability coefficients for the children's sample ranged from 0.86 to 0.93 for the Vocabulary subtest, 0.86 to 0.96 for Matrix Reasoning, and for the two-subtests combined were from 0.85 to 0.88 (Psychological Corporation 1999).
Dependent variables were number of holes filled for each subtest and for the sum of the three subtests.
In most of the WISC III subtests, scores were within average limits with mean scores above or equal 8 in 10 of 13 subtests (norms are 10 +/- 2 for each subtest).
To enable comparison between subtests, we calculated the percentage of correctly answered questions for each subtest.
The new α-level for each subtest was acquired by dividing the total α-level by the number of subtests.
As was to be expected, on all subtests, as well as on the total SCIP score, the patients with a higher education scored higher than those with a less than secondary education (all p values < .01), with effect sizes that varied between 0.50 for the VFT subtest and 0.70 for the PST subtest.
