Publications
Publications
Below is a list of published or accepted papers. Preprint versions of all publications are accessible via Psyarxiv.
In Progress
Coffey, J., Spelke, E., & Snedeker, J. (preregistered). Linking adult input to children's vocabulary growth in Ghana. [pdf]
Under Review
Walker, S., Delavande, A., Grosjean, P., & Coffey, J. (under review). Siblings: new evidence on the language environment of young children. [pdf]
Man, H., Coffey, J., & Snedeker, J. (under review). Re-examining the noun bias in Mandarin Chinese using word-level models of acquisition. [pdf]
Coffey, J., Koziol, A., Scaff, C., Natovich, T., Cychosz, M., VanDam, M., Warlaumont, A., Cristia, A., & Havron, N. (under review). Multiparty speech predominates in children's language environments across diverse cultural settings. [pdf]
Scaff, C., Tey, K. J., Abdou, M., Borst, L., Coffey, J., & Gautheron, L. (under review). Diurnal patterns in early language environments across cultures: Validating automated approaches to naturalistic data. [pdf]
Tsuji, S., Tey, K.J., Scaff, C., Horton-Mastin, A., Khentout, M., Gautheron, L., Coffey, J., Abdou, M., & Cristia, A. (under review). A tutorial for navigating ethical dilemmas in research: the case of early language interventions. [pdf]
2026
Coffey, J. & Spelke, E. (2026). Developing an open multi-domain assessment battery using laboratory tasks for children in low- and middle-income countries. Open Mind. [pdf]
Coffey, J., & Scaff, C. (2026). Making peer culture audible: Long-form recordings and the case for early child-to-child input. Behavioral and Brain Sciences. [pdf]
Coffey, J., Baranov, V., Hu, X., Contreras Suarez, D., Cameron, L., & Cristia, A. (2026). Talking in Timor-Leste: Urbanization, peer input, and other influences on children's verbal environments. Developmental Science. [pdf]
2025
Coffey, J., Spelke, E., & Snedeker, J. (2025). Examining the lexical development of multilingual children in Ghana using a caregiver reported checklist. First Language. [pdf]
Scaff, C., Coffey, J., & Cristia, A. (2025). A meta-analysis of the correlation between socioeconomic status and direct measures of young children's word comprehension. Infancy. [pdf]
Coffey, J. & Snedeker, J. (2025). How strong is the relationship between caregiver speech and language development? A meta-analysis. Journal of Child Language. [pdf]
Kunze, T., Métais, M., Titeux, H., Elbert, H., Gautherson, L., Coffey, J., Dupoux, E., Cristia, A., & Lavechin, M. (2025). Challenges in automated processing of speech from child wearables: the case of Voice Type Classifier. Interspeech 2025. [pdf]
2024
Coffey, J., Rasanen, O., Scaff, C., & Cristia, A. (2024). The difficulty and importance of estimating the lower and upper bounds of infant speech exposure. Interspeech 2024. [pdf]
Coffey, J. & Snedeker, J. (2024). Disentangling the roles of age and knowledge in early language acquisition: a fine-grained analysis of the vocabularies of infant and child language learners. Cognitive Psychology. [pdf]
Coffey, J. & Cristia, A. (2024). Long-form recordings to study children’s language input and output in under-resourced contexts. Resources for African Indigenous Languages @ LREC-COLING 2024. [pdf]
Coffey, J., Zeitlin, M., Crawford, J., & Snedeker, J. (2024). It's all in the interaction: Early acquired words are both frequent and highly imageable. Open Mind. [pdf]
Pre-2023
Coffey, J. (2023). Examining the robustness of input-outcome associations in children’s language development and evaluating the effectiveness of a novel assessment in rural Ghana. Doctoral Dissertation, Harvard University Graduate School of Arts and Sciences. [pdf]
Coffey, J., Shafto, C. L., Geren, J. C., & Snedeker, J. (2022). The effects of maternal input on language in the absence of genetic confounds: Vocabulary development in internationally adopted children. Child Development. [pdf]
Buerkin-Pontrelli, A., Coffey, J., & Swingley, D. (2018). Outputs as inputs: Sequential models of the products of infant statistical learning of language. CogSci 2018.
Coffey, J. (2017). Effects of Atypical White Matter Development and Lateralization on Language in Children with Autism Spectrum Disorder. Undergraduate Honors Thesis, University of Pennsylvania School of Arts and Sciences. [pdf]
Popular Press
Coffey, J. & Tsuji, S. (2024). How well do you understand your child's development? for BOLD