Abstract
This case study examines the speech and language development of MS, a 6;9-year-old boy presenting with consistent deviant phonological disorder, particularly affecting fricatives, affricates, and approximants. MS’s early medical history of recurrent otitis media and delayed speech milestones contributed to his phonological impairments. Phonological contrast therapy targeting /f/, /s/, and /ʃ/ was administered through 11 individual sessions, utilizing minimal pairs and triplets to enhance his phoneme realization and generalization to spontaneous speech. Therapy resulted in significant improvement, with MS achieving correct production of target phonemes across various linguistic contexts, boosting his intelligibility and confidence. Residual errors in voiced fricatives and affricates suggest the need for continued therapy. The study underscores the importance of early intervention, parent involvement, and tailored therapeutic strategies in addressing phonological disorders.