About the Authors

Patricia K. Kuhl

pkkuhl@u.washington.edu

Affiliation Institute for Learning & Brain Sciences, University of Washington, Seattle, Washington, United States of America

Sharon Coffey-Corina

Affiliation Center for Mind and Brain, University of California Davis, Davis, California, United States of America

Denise Padden

Affiliation Institute for Learning & Brain Sciences, University of Washington, Seattle, Washington, United States of America

Jeffrey Munson

Affiliation Department of Psychiatry, University of Washington, Seattle, Washington, United States of America

Annette Estes

Affiliation Department of Speech and Hearing Sciences, University of Washington, Seattle, Washington, United States of America

Geraldine Dawson

Affiliations Department of Psychiatry, University of North Carolina, Chapel Hill, North Carolina, United States of America, The Autism Speaks Foundation, New York, New York, United States of America

Competing Interests

All authors except GD declare no competing interests. GD is the co-author of a book describing the Early Start Denver Model Intervention, from which she receives royalties. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Analyzed the data: SCC DP JM. Wrote the paper: PKK. Designed the Time 1 ERP experiment: PKK SCC. Designed the randomized, controlled trial from which the participants and Time 1 and Time 2 behavioral data were derived: GD. Designed the follow up study from which the Time 3 behavioral data were derived: GD AE JM. Conducted the Time 1 ERP experiment: SCC DP.