GFTA-2 scores and error types
Children with standard scores on the GFTA-2 in the
normal range inevitably and predictably produced
fewer errors (M¼1.06, SD¼2.44) than children
with standard scores below the normal range
(M¼20.13, SD¼17.72), this difference was significant
(t(7.034)¼73.040; p¼.019). Looking
only at the 28 children who produced errors, there
were 20 children with standard scores within the
normal range, and 8 children with standard scores
out with the normal range. Of the 20 with standard scores in the normal range, 11 children produced
developmental errors only; five children produced
non-developmental errors only and four children
produced both types. In this group, 70% of errors
were developmental in nature but because the
number of errors was small (M¼3.35, SD¼3.36),
there was no significant difference between the
number of developmental and non-developmental
errors (t(19)¼1.406; p¼.176). Again, gliding was
the most frequent error type, but 1 child also
presented with non-developmental errors of lateral
sibilants and another with phoneme specific nasal
emission, despite having standard scores in the
normal range.
GFTA-2 scores and error typesChildren with standard scores on the GFTA-2 in thenormal range inevitably and predictably producedfewer errors (M¼1.06, SD¼2.44) than childrenwith standard scores below the normal range(M¼20.13, SD¼17.72), this difference was significant(t(7.034)¼73.040; p¼.019). Lookingonly at the 28 children who produced errors, therewere 20 children with standard scores within thenormal range, and 8 children with standard scoresout with the normal range. Of the 20 with standard scores in the normal range, 11 children produceddevelopmental errors only; five children producednon-developmental errors only and four childrenproduced both types. In this group, 70% of errorswere developmental in nature but because thenumber of errors was small (M¼3.35, SD¼3.36),there was no significant difference between thenumber of developmental and non-developmentalerrors (t(19)¼1.406; p¼.176). Again, gliding wasthe most frequent error type, but 1 child alsopresented with non-developmental errors of lateralsibilants and another with phoneme specific nasalemission, despite having standard scores in thenormal range.
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