About the Authors

Nathan F. Lepora

Affiliations Department of Engineering Mathematics, University of Bristol, Bristol, United Kingdom, Bristol Robotics Laboratory (BRL), University of Bristol and University of the West of England, Bristol, United Kingdom

Giovanni Pezzulo

giovanni.pezzulo@istc.cnr.it

Affiliation Institute of Cognitive Sciences and Technologies, National Research Council, Rome, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NFL GP. Performed the experiments: NFL GP. Analyzed the data: NFL GP. Contributed reagents/materials/analysis tools: NFL GP. Wrote the paper: NFL GP.