Introduction: The aim of this study is contribute to clinical practice of bilinguals around the globe, as well as to add to our understanding of bilingual aphasia processing, by analysing confrontation naming data from four Afrikaans/English bilingual individuals with acquired aphasia due to a left hemisphere stroke.Methods: This is a case series analysis of four Afrikaans/English bilingual aphasic individuals following a left cerebrovascular accident. Error analysis of confrontation naming data in both languages was performed. Research questions were directed toward the between language differences in lexical retrieval abilities, types of errors produced and degree of cognate overlap.Results: Three of the four participants showed significantly higher naming accuracy in first acquired language (L1) relative to the second acquired language (L2) and the largest proportion of error type for those three participants in both L1 and L2 was omission. One of the four participants (linguistically balanced) showed no between language accuracy difference. Regarding cognate overlap, there was a trend for higher accuracy for higher cognate words (compared to low).Discussion: This study showed that naming performance in these four individuals was reflective of their relative language proficiency and use patterns prior to their stroke. These findings are consistent with the hierarchical model, in normal bilingual speakers and with persons with bilingual aphasia.

This article deals with phonological interference, as a phenomenon when phonological rules or sounds of one language affect the pronunciation and sound system of another language, often found in bilingual or multilingual speakers. This type of interference can lead to changes in speech production affecting articulation, stress patterns, and intonation, which can create communication problems or misunderstandings between speakers of different languages. This can significantly affect the way bilingual speakers communicate in their second language, forcing them to apply phonetic rules from the first language. This can lead to errors or unusual stress patterns that can make them difficult for second-language speakers to understand. As a result, effective communication can be disrupted, especially if the interference is constant and noticeable. Phonological interference can manifest itself at various levels: segmental (individual sounds) and supersegmental (stress, intonation, rhythm of speech). At the segment level, this is expressed in the replacement or distortion of the sounds of the second language, which is especially noticeable in the presence of phonemes that are absent in the native language. At the supersegmental level, it manifests itself in a change in intonation constructions or the rhythmic pattern of speech, which can lead to difficulties in understanding. The study of phonological interference plays an important role in the field of linguistics and methods of teach