About the Authors

Hyunjoo Yoo

Contributed equally to this work with: Hyunjoo Yoo, Pumpki Lei Su

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

hyoo3@ua.edu

Affiliation Department of Communicative Disorders, College of Arts & Sciences, The University of Alabama, Tuscaloosa, Alabama, United States of America

Pumpki Lei Su

Contributed equally to this work with: Hyunjoo Yoo, Pumpki Lei Su

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Department of Speech, Language and Hearing, School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, Texas, United States of America

Gordon Ramsay

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – review & editing

Affiliations Spoken Communication Laboratory, Marcus Autism Center, Children’s Healthcare of Atlanta, Atlanta, Georgia, United States of America, Department of Pediatrics, Emory School of Medicine, Atlanta, Georgia, United States of America

Helen L. Long

Roles Conceptualization, Data curation, Investigation, Validation, Visualization, Writing – review & editing

Affiliation Waisman Center, University of Wisconsin–Madison, Madison, Wisconsin, United States of America

Edina R. Bene

Roles Conceptualization, Data curation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – review & editing

Affiliation Origins of Language Laboratory, School of Communication Sciences and Disorders, University of Memphis, Memphis, Tennessee, United States of America

D. Kimbrough Oller

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliations Origins of Language Laboratory, School of Communication Sciences and Disorders, University of Memphis, Memphis, Tennessee, United States of America, Institute for Intelligent Systems, University of Memphis, Memphis, Tennessee, United States of America, Konrad Lorenz Institute for Evolution and Cognition Research, Klosterneuburg, Austria

Competing Interests

D. K. Oller is an unpaid member of the LENA Scientific advisory board. However, this does not alter our adherence to PLOS ONE policies on sharing data and materials.