Phonological changes obtained by treatment based on ABAB-Withdrawal and Multiple-Probes Approach in different severity levels of phonological disorders

PURPOSE: to analyze the phonological changes obtained (phonological system, phonetic inventory and distinctive features alterations) pre and post-treatment by ABAB-Withdrawal and Multiple Probes Approach in different severity levels of phonological disorders. METHODS: the diagnosis was determined by the phonoaudiological evaluation in eight children with different severity level of phonological disorders, whose average age was 5:5 in the beginning of the treatment. All of them were treated by ABAB-Withdrawal and Multiple Probes Approach. It was analyzed the phonetic inventory, phonological system and distinctive features alterations. RESULTS: all severity levels of phonological disorders demonstrated some improvement in the phonological system. CONCLUSIONS: the severe phonological disorders presented the highest improvement among the different levels.