About the Authors
Nutrition and Behaviour Unit, School of Experimental Psychology, University of Bristol, Bristol, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JMB DF. Performed the experiments: NRS JMC LLW OMM. Analyzed the data: JMB ECH. Wrote the paper: JMB PJR DF ECH. Designed and constructed soup-bowl apparatus: JFB.