This research analyzes phonological disorder patterns in the pronunciation of the /r/ consonant among university students with rhotacism. The study focuses on Wardah Zahra, a 20-year-old student who has experienced difficulty pronouncing the /r/ consonant since childhood. Using a descriptive qualitative approach with interview techniques and pronunciation analysis, the research reveals consistent substitution patterns where the /r/ consonant is pronounced as /l/ and /w/, particularly in medial and final word positions. Phonetic and phonemic analysis uncovers pronunciation variations that are consistent across initial, medial, and final word positions. Psychological factors such as self-confidence also influence the development of pronunciation disorders. Research findings indicate that adult rhotacism patients develop adaptive communication strategies and exhibit relatively stable pronunciation patterns. Although there are variations in disorder severity, consistency is found in phonological substitution patterns. This research provides an in-depth understanding of phonological disorder characteristics in adult rhotacism patients and can serve as a foundation for developing more effective interventions.

This research is motivated by the importance of understanding children's language development as an indicator of their cognitive and social abilities. The study aims to analyze language acquisition in a 6-year-1-month-old child through Mean Length of Utterance (MLU) measurement, focusing on phonological, morphological, and syntactic aspects. The method used is descriptive qualitative with data collection techniques including observation, recording, and conversation transcripts. The results show that the research subject has MLU values appropriate to their age development stage. They have good phonological ability in pronouncing almost all Indonesian phonemes, morphological mastery including basic affixes usage, and syntactic ability in forming compound sentences. This study concludes that MLU is an effective measurement tool for children's language acquisition and recommends using this method for monitoring language development in preschool-aged children.