Significant improvements were noted in intelligibility in both single words ( paired t ( 6 ) = 4.409 , p = 0.005 ) and continuous speech ( asymptotic Z = 2.371 , p = 0.018 ) 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 ( 6 ) = 1.763 , p = 0.128 ) or continuous speech ( asymptotic Z = 1.442 , p = 0.149 ) .