Background: relapse in phonological performance.
Aim: to verify relapse in the phonological performance related to sound production in the treatment of phonological disorder.
Method: three subjects with phonological disorders, aged 6:0, 7:0, 7:0 years, were treated for phoneme /r/ using the ABAB-Withdrawal and Multiple Probes Model. After a cycle of treatment, the phonemes that presented relapse in terms of production percentage were compared.
Results: the results indicate that relapse occurred in the phonological system of all subjects. The involved features were mainly related to the main category.
Conclusion: a relationship between the features of the treated phoneme and the ones that presented relapse was observed for all of the studied cases.