etadd_47(3) - Division on Autism and Developmental Disabilities
etadd_47(3) - Division on Autism and Developmental Disabilities
etadd_47(3) - Division on Autism and Developmental Disabilities
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
TABLE 6<br />
Pairwise Comparis<strong>on</strong>s <strong>on</strong> Posttest Scores for Training <strong>and</strong> Transfer Word Identificati<strong>on</strong><br />
(I) Group (J) Group<br />
the means showed a significant difference between<br />
the adjusted means of the synthetic<br />
ph<strong>on</strong>ics treatment group <strong>and</strong> the c<strong>on</strong>trol<br />
group. The difference between the adjusted<br />
mean scores was 3.039, (ES 0.330). Posttest<br />
scores were significantly higher in training<br />
word identificati<strong>on</strong> in children with significant<br />
cognitive disability for both the synthetic<br />
<strong>and</strong> analogy ph<strong>on</strong>ics treatment groups than<br />
that of the c<strong>on</strong>trol group, with the posttest<br />
scores of the synthetic ph<strong>on</strong>ics treatment<br />
group being significantly higher than those of<br />
the analogy ph<strong>on</strong>ics treatment group. The<br />
scores of the synthetic ph<strong>on</strong>ics treatment<br />
group were also significantly higher than the<br />
c<strong>on</strong>trol group in transfer word identificati<strong>on</strong>.<br />
Additi<strong>on</strong>al Analyses<br />
Two further questi<strong>on</strong>s arose in the course of<br />
the study that warranted further investigati<strong>on</strong>.<br />
First, even though the experimental groups<br />
did not differ significantly from the c<strong>on</strong>trol <strong>on</strong><br />
either Letter-Word Identificati<strong>on</strong> or Word Attack,<br />
did participants’ performance <strong>on</strong> those<br />
measures improve over the course of the<br />
study? Paired-samples t tests were c<strong>on</strong>ducted<br />
to pretest <strong>and</strong> posttest scores. Significant differences<br />
were found between the mean of the<br />
pretest <strong>and</strong> the mean of the posttest for the<br />
synthetic ph<strong>on</strong>ics treatment group t(16)2.384,<br />
p .030, .05 <strong>and</strong> the analogy ph<strong>on</strong>ics<br />
treatment group t(17) 2.519, p .022, .05<br />
<strong>on</strong> Letter-Word Identificati<strong>on</strong>. Significant differences<br />
were found between the mean of the<br />
Mean Error<br />
Difference (I-J) Std. Sig.<br />
Training Word Identificati<strong>on</strong><br />
C<strong>on</strong>trol Synthetic 5.639* 1.110 .000<br />
Analogy 5.281* 1.091 .000<br />
Synthetic Analogy .359 1.092 1.000<br />
Transfer Word Identificati<strong>on</strong><br />
C<strong>on</strong>trol Synthetic 3.039* 1.046 .017<br />
Analogy 1.176 1.027 .774<br />
Synthetic Analogy 1.863 1.027 .228<br />
* The mean is significant at the .05 level.<br />
pretest <strong>and</strong> the mean of the posttest for all<br />
three treatment c<strong>on</strong>diti<strong>on</strong>s <strong>on</strong> Word Attack;<br />
synthetic ph<strong>on</strong>ics treatment group t(16)3.955,<br />
p .001, .01, analogy ph<strong>on</strong>ics treatment<br />
group t(17) 6.115, p .000, .05 <strong>and</strong><br />
c<strong>on</strong>trol t(16)2.273, p .037, .05. Using<br />
estimated values for age <strong>and</strong> grade equivalency<br />
provided by the WJIII DRB (Table 7) it<br />
can be seen that <strong>on</strong> Letter-Word Identificati<strong>on</strong><br />
improvement was commensurate with the<br />
time spent <strong>on</strong> instructi<strong>on</strong>, about 12 m<strong>on</strong>ths.<br />
However, <strong>on</strong> Word Attack age <strong>and</strong> grade<br />
equivalencies for the synthetic <strong>and</strong> analogy<br />
ph<strong>on</strong>ics treatment groups went up a full year.<br />
Sec<strong>on</strong>dly, were there individual differences<br />
am<strong>on</strong>g participants with significant cognitive<br />
disability in their resp<strong>on</strong>se to systematic ph<strong>on</strong>ics<br />
instructi<strong>on</strong>? Nine participants in the<br />
study scored zero <strong>on</strong> the pretests <strong>and</strong> posttests<br />
<strong>on</strong> both training word identificati<strong>on</strong> <strong>and</strong><br />
transfer word identificati<strong>on</strong>. ANOVAs were<br />
c<strong>on</strong>ducted to compare these nine participants<br />
with the other forty-three participants in the<br />
study <strong>on</strong> age, IQ <strong>and</strong> pretest scores <strong>on</strong> the<br />
four dependent variables. There were significant<br />
differences <strong>on</strong> the Letter-Word identificati<strong>on</strong><br />
pretest F(1,51) 13.264, p .05 <strong>and</strong><br />
the Word Attack pretest F(1,51) 4.679, p <br />
.05. It was also detected that five participants<br />
in the study had scores greater than 20 words<br />
correct <strong>on</strong> the pretest for training word identificati<strong>on</strong>.<br />
ANOVAs showed there were significant<br />
differences between these five participants<br />
<strong>and</strong> all the other participants <strong>on</strong> all four<br />
pretests, but no significant differences were<br />
Effects of Systematic Ph<strong>on</strong>ics / 275