phonetics (experimental phonetics), phonology (laboratory phonology), language documentation (Berber languages), documentation of the phonetics and phonology of Kabyle-Tamazight (known as Berber), phonological development, phonetics and phonology of bi-/multilinguals, neuro-phonology
broad – first and second language acquisition, bilingualism, with a focus on African (i.e., Ghanaian) languages, such as Akan, Ga, and Ewe; narrow – phonological and lexical development in bilingual and multilingual children and adults learning a second language, acquisition of variable input