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Cambridge Language Sciences

Interdisciplinary Research Centre
Areas of Interest: 
Phonological acquisition in first and second languages
Properties of and variation in child-directed speech
Speech variability
Social variation in language
Language contact, dialects and ethnolinguistic repertoires

My PhD project looks at variation in child-directed speech and its impact on phonological acquisition in bilingual children. 


Key publications: 

Sim, J. H. (in press). Negotiating social meanings in a plural society: social perceptions of variants of /l/ in Singapore English. Language in Society. [preprint]

Sim, J. H. (2021). Sociophonetic variation in English /l/ in the child-directed speech of English-Malay bilinguals. Journal of Phonetics, 88. DOI:

Sim, J. H. & Post, B. (2021). Variation in quality of maternal input and development of coda stops in English-speaking children in Singapore. Journal of Child Language. DOI:

Sim, J. H. (2019). “But you don’t sound Malay!”: Language dominance and variation in the accents of English-Malay bilinguals in Singapore. English World-Wide40(1), 79-108. DOI:

Teaching and Supervisions

Research supervision: 

2019 – 2020: Li6 Phonetics (undergraduate supervision)

Graduate Student
Departments and institutes: