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This study investigated the influence of interventive programs for syntax and articulation on the articulatory and syntactic skills of public school children with multiple-linguistic problems. One group received a program of syntax exclusively, a second received a program of articulation exclusively, and a third received no intervention. Pre- and posttesting revealed that the two experimental groups made significant gains in both syntax and articulatory skills, while the control subjects made no significant gains.
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Matheny et al. (1978) studied this question.
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