About the Authors

Joshua M. Plotnik

Joshua.Plotnik@gmail.com

Affiliations Department of Psychology, University of Cambridge, Cambridge, United Kingdom, Think Elephants International, Stone Ridge, New York, United States of America, Golden Triangle Asian Elephant Foundation, Chiang Saen, Chiang Rai, Thailand

Jennifer J. Pokorny

Affiliations Think Elephants International, Stone Ridge, New York, United States of America, Center for Mind and Brain, University of California Davis, Davis, California, United States of America

Titiporn Keratimanochaya

Affiliation Golden Triangle Asian Elephant Foundation, Chiang Saen, Chiang Rai, Thailand

Christine Webb

Affiliations Think Elephants International, Stone Ridge, New York, United States of America, Department of Psychology, Columbia University, New York, New York, United States of America

Hana F. Beronja

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Alice Hennessy

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

James Hill

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Virginia J. Hill

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Rebecca Kiss

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Caitlin Maguire

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Beckett L. Melville

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Violet M. B. Morrison

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Dannah Seecoomar

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Benjamin Singer

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Jehona Ukehaxhaj

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Sophia K. Vlahakis

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Dora Ylli

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Nicola S. Clayton

Affiliation Department of Psychology, University of Cambridge, Cambridge, United Kingdom

John Roberts

Affiliation Golden Triangle Asian Elephant Foundation, Chiang Saen, Chiang Rai, Thailand

Emilie L. Fure

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Alicia P. Duchatelier

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

David Getz

Affiliation M.S. 114, East Side Middle School, New York, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JMP JJP TK CW HFB AH JH VJH RK CM BLM VMBM DS BS JU SKV DY NSC JR ELF APD DG. Performed the experiments: JMP TK. Analyzed the data: JMP JJP CW HFB AH JH VJH RK CM BLM VMBM DS BS JU SKV DY ELF APD. Wrote the paper: JMP JJP NSC.