About the Authors

Amber Watts

Contributed equally to this work with: Amber Watts, Ryan W. Walters

amberwatts@ku.edu

Affiliation Department of Clinical Psychology, KU Alzheimer’s Disease Center, University of Kansas, Lawrence, Kansas, United States of America

Ryan W. Walters

Contributed equally to this work with: Amber Watts, Ryan W. Walters

Affiliation Department of Medicine, Creighton University, Omaha, Nebraska, United States of America

Lesa Hoffman

Affiliation Research Design and Analysis Unit, Schiefelbusch Institute for Lifespan Studies, University of Kansas, Lawrence, Kansas, United States of America

Jonathan Templin

Affiliation Department of Educational Psychology, University of Kansas, Lawrence, Kansas, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AW RW LH JT. Performed the experiments: AW RW. Analyzed the data: RW. Wrote the paper: AW RW LH JT. Conceived, designed, and funded the accelerometry project, oversaw acquisition of the data, and interpreted the statistical results: AW. Contributed to conception of data analysis and interpretation of results, and contributed to critical revisions of the manuscript for important intellectual content: LH. Contributed to conception of data analysis and interpretation of results, and contributed to critical revisions of the manuscript for important intellectual content: JT.