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Supplemental Information

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Daniela Zahn conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables.

Christoph Scheepers conceived and designed the experiments, analyzed the data, prepared figures and/or tables, reviewed drafts of the paper.

Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Ethic approval has been obtained in 2010 from the Ethics committee of the Faculty of Mathematics and Science, Glasgow University (now Ethics Committee of the College of Science & Engineering). Reference number FIMS 00734

Data Deposition

The following information was supplied regarding the deposition of related data:

http://www.psy.gla.ac.uk/~danielaz/Data_DZChS.zip

Funding

The authors received no funding for this work.


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