The participants in the general research group demonstrated
especially low functioning compared with the norm in rapid naming
of objects, writing efficiency, arithmetic automation (measures of
precision and time), delayed recall (recognition), and parallel visual
perception. Their functioning was low, compared with the norm,
in verbal fluency (retrieval by first letter, retrieval by category),
decoding text, reading speed, handwriting quality, spelling mistakes
(fundamental and others), and immediate verbal memory. In order
to examine the significance of these deviations, we conducted a onesample
t-test. The findings are presented in Table 3.