Daniel Swingley

Daniel Swingley is a Professor in the Department of Psychology at the University of Pennsylvania's School of Arts & Sciences. He previously served as department chair until summer 2023. His research focuses on how children learn language, with particular emphasis on infants and toddlers.

Swingley earned his Ph.D. in Psychology from Stanford University in 1997. His research program examines word recognition and lexical representation in infants and young children, lexical and phonological categorization, perceptual experiments with infants, acoustic measurements of infant-directed speech, statistical analyses of infant-directed speech corpora, and perceptual category learning in adults.

His work demonstrates that infants' language comprehension is more sophisticated than previously believed, with children showing understanding of words from about 10 months of age. Swingley's research has revealed how infants integrate phonetic, syntactic, and conceptual information during word learning, and how the developing lexicon may actually contribute to phonetic category learning. His laboratory employs the visual-world paradigm (looking-while-listening procedure) to study language processing in infants and young children.

Analysis of Swingley's recent publications reveals a strong focus on computational modeling of language acquisition processes, the relationship between phonetic clarity and referential clarity in infant-directed speech, and the developmental trajectory of phonological processing in young children. His work spans developmental psychology, cognitive science, and speech science, often employing interdisciplinary approaches that combine experimental methods with corpus analysis and computational modeling.

Swingley has mentored numerous successful researchers who have gone on to faculty positions at institutions including Harvard, UCSD, UW-Madison, and others. His lab, the Infant Language Center, has produced influential research on early language development. His work has received media attention from outlets including the BBC, New York Times, France 2, and WHYY public radio, demonstrating the broader impact of his research.

Swingley maintains an active research program with numerous publications each year, regularly presents at major conferences including the Boston University Conference on Language Development and the International Conference on Infant Studies, and has been invited to speak at universities worldwide including Columbia, Brown, UCSD, and the MPI for Psycholinguistics.