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TABLE 3—(C<strong>on</strong>tinued)<br />
Study Communicati<strong>on</strong> C<strong>on</strong>sequences O<str<strong>on</strong>g>the</str<strong>on</strong>g>r C<strong>on</strong>sequences<br />
J<strong>on</strong>es (2005)<br />
The children were<br />
sp<strong>on</strong>taneously attempting to<br />
exchange <str<strong>on</strong>g>the</str<strong>on</strong>g> symbols in 95%<br />
of cases.<br />
Requesting was <str<strong>on</strong>g>the</str<strong>on</strong>g> main<br />
functi<strong>on</strong> of communicati<strong>on</strong>.<br />
The children were observed to<br />
move towards using more<br />
formal methods of<br />
communicati<strong>on</strong> across all<br />
c<strong>on</strong>texts.<br />
Sp<strong>on</strong>taneous exchange<br />
occurred <strong>on</strong> average 96% of<br />
<str<strong>on</strong>g>the</str<strong>on</strong>g> time for all interacti<strong>on</strong>s<br />
that involved a symbol.<br />
The PECS training was highly<br />
successful for three of <str<strong>on</strong>g>the</str<strong>on</strong>g> five<br />
children. They learned to use<br />
target utterances, made gains<br />
in length <strong>and</strong> variability of<br />
sp<strong>on</strong>taneous utterances,<br />
generalized those gains across<br />
items <strong>and</strong> people, <strong>and</strong><br />
maintained those gains.<br />
One of <str<strong>on</strong>g>the</str<strong>on</strong>g> five children<br />
showed <strong>on</strong>ly minimal change<br />
(no generalizati<strong>on</strong> <strong>and</strong> no<br />
change in variability) in<br />
sp<strong>on</strong>taneous speech. The<br />
remaining <strong>on</strong>e did not show<br />
gains in sp<strong>on</strong>taneity, but did<br />
show important gains in <str<strong>on</strong>g>the</str<strong>on</strong>g><br />
prerequisite skill of imitati<strong>on</strong>.<br />
Four out of <str<strong>on</strong>g>the</str<strong>on</strong>g> five children<br />
showed an increase in <str<strong>on</strong>g>the</str<strong>on</strong>g>ir<br />
mean length of utterances for<br />
training items after <str<strong>on</strong>g>the</str<strong>on</strong>g> PECS<br />
training.<br />
Three children showed an<br />
increase in word variati<strong>on</strong><br />
during <str<strong>on</strong>g>the</str<strong>on</strong>g> PECS <strong>and</strong> timedelay<br />
sessi<strong>on</strong>s. One child<br />
showed no increases in new<br />
word use after <str<strong>on</strong>g>the</str<strong>on</strong>g><br />
preliminary increases seen in<br />
baseline, while <strong>on</strong>e child<br />
introduced new words during<br />
each of <str<strong>on</strong>g>the</str<strong>on</strong>g> procedural phases<br />
of <str<strong>on</strong>g>the</str<strong>on</strong>g> study <strong>and</strong> followup.<br />
Four of <str<strong>on</strong>g>the</str<strong>on</strong>g> five children began<br />
to use target utterances<br />
sp<strong>on</strong>taneously during PECS<br />
<strong>and</strong> time-delay sessi<strong>on</strong>s. Only<br />
<strong>on</strong>e maintained this ability<br />
during followup, <strong>and</strong> <strong>on</strong>ly<br />
<strong>on</strong>e generalized this ability<br />
across communicative<br />
partners.<br />
One child significantly<br />
increased his ability to<br />
expressively label attributes;<br />
<str<strong>on</strong>g>the</str<strong>on</strong>g> remaining four children<br />
remained level through<br />
PECS.<br />
The children showed an<br />
increase in sp<strong>on</strong>taneously<br />
gaining <str<strong>on</strong>g>the</str<strong>on</strong>g> adult’s attenti<strong>on</strong>.<br />
Two children increased <str<strong>on</strong>g>the</str<strong>on</strong>g>ir<br />
ability to imitate target<br />
utterances, while <strong>on</strong>e child<br />
decreased her ability to<br />
imitate.<br />
Report of<br />
Generalizati<strong>on</strong> a<br />
Relati<strong>on</strong> to<br />
PECS b<br />
N M<br />
Y H<br />
Functi<strong>on</strong>al Communicati<strong>on</strong> Interventi<strong>on</strong> / 71