About the Authors

Michele Tumminello

Affiliations Dipartimento di Scienze Statistiche e Matematiche “Silvio Vianelli”, University of Palermo, Palermo, Italy, Department of Social and Decision Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America

Salvatore Miccichè

Affiliation Dipartimento di Fisica e Chimica, University of Palermo, Palermo, Italy

Jan Varho

Affiliation Department of Physics and Astronomy, University of Turku, Turku, Finland

Jyrki Piilo

Affiliation Department of Physics and Astronomy, University of Turku, Turku, Finland

Rosario N. Mantegna

rn.mantegna@gmail.com

Affiliations Dipartimento di Fisica e Chimica, University of Palermo, Palermo, Italy, Center for Network Science and Department of Economics, Central European University, Budapest, Hungary

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MT SM JP RNM. Analyzed the data: MT SM JV JP RNM. Wrote the paper: MT SM JV JP RNM.