Received: 7 February 2018
Accepted: 25 January 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: This experiment was approved by the University of Oregon’s Office of Research Compliance (protocol 03242011.064). Participants provided informed consent prior to beginning the experiment and received a course credit for participating in this study.
: Not applicable.
: The authors declare that they have no competing interests.
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