About the Authors

Ross E. Vanderwert

Affiliation Department of Human Development, University of Maryland, College Park, Maryland, United States of America

Peter J. Marshall

Affiliation Department of Psychology, Temple University, Philadelphia, Pennsylvania, United States of America

Charles A. Nelson III

Affiliation Division of Developmental Medicine, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, United States of America

Charles H. Zeanah

Affiliation Department of Psychiatry and Neurology, Tulane University, New Orleans, Louisiana, United States of America

Nathan A. Fox

fox@umd.edu

Affiliation Department of Human Development, University of Maryland, College Park, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PJM CNI CHZ NF. Performed the experiments: REV. Analyzed the data: REV. Wrote the paper: REV.