About the Authors

Joshua M. Plotnik, Nicola S. Clayton
Department of Psychology, University of Cambridge, Cambridge, United Kingdom

Joshua M. Plotnik, Jennifer J. Pokorny, Christine Webb
Think Elephants International, Stone Ridge, New York, United States of America

Joshua M. Plotnik, Titiporn Keratimanochaya, John Roberts
Golden Triangle Asian Elephant Foundation, Chiang Saen, Chiang Rai, Thailand

Jennifer J. Pokorny
Center for Mind and Brain, University of California Davis, Davis, California, United States of America

Christine Webb
Department of Psychology, Columbia University, New York, New York, United States of America

Hana F. Beronja, Alice Hennessy, James Hill, Virginia J. Hill, Rebecca Kiss, Caitlin Maguire, Beckett L. Melville, Violet M. B. Morrison, Dannah Seecoomar, Benjamin Singer, Jehona Ukehaxhaj, Sophia K. Vlahakis, Dora Ylli, Emilie L. Fure, Alicia P. Duchatelier, David Getz
M.S. 114, East Side Middle School, New York, New York, United States of America

Corresponding Author

Joshua.Plotnik@gmail.com

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.