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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

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