Hi, Ahmed El Hady and I are writing to you to request your participation in a brief survey (less than 10 minutes). We are interested in how people from different disciplines define “behavior”. If you are willing to answer some questions on what constitutes behavior, please take the survey (link below)! Survey participants can enter to win a $50 Amazon gift card. Survey link: https://princetonsurvey.az1.qualtrics.com/jfe/form/SV_aWUZqxtDbUCFGg5 Your participation in the survey is completely voluntary and all of your responses will be kept confidential. No personally identifiable information will be associated with your responses to any reports of these data. The Princeton Institutional Review Board has approved this survey. Should you have any comments or questions, please feel free to contact me at adamjc@princeton.edu. Thank you very much for your time and cooperation. Sincerely, Adam Calhoun and Ahmed El Hady