Significant improvements were noted in intelligibility in both single words ( paired t ( @ ) = @ , p = @ ) and continuous speech ( asymptotic Z = @ , p = @ ) for the group receiving phonology therapy pre - to post-treatment , but no differences in intelligibility were found for those receiving the articulation therapy pre - to post-treatment , either for single words ( paired t ( @ ) = @ , p = @ ) or continuous speech ( asymptotic Z = @ , p = @ ) .