About the Authors

Justin O’Brien

Affiliation Centre for Research in Infant Behaviour, Department of Psychology, Brunel University, Uxbridge, United Kingdom

Janine Spencer

janine.spencer@brunel.ac.uk

Affiliation Centre for Research in Infant Behaviour, Department of Psychology, Brunel University, Uxbridge, United Kingdom

Christine Girges

Affiliation Centre for Research in Infant Behaviour, Department of Psychology, Brunel University, Uxbridge, United Kingdom

Alan Johnston

Affiliation Cognitive, Perceptual and Brain Sciences, Psychology and Language Sciences, University College London, London, United Kingdom

Harold Hill

Affiliation School of Psychology, University of Wollongong, Wollongong, New South Wales, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JS JOB HH AJ. Performed the experiments: JS JOB CG. Analyzed the data: JS JOB CG HH. Contributed reagents/materials/analysis tools: HH AJ. Wrote the paper: JOB JS CG.