The Influence of Early Respondents

Daniel M. Romero, Katharina Reinecke, Lionel P. Robert
2017 Proceedings of the Tenth ACM International Conference on Web Search and Data Mining - WSDM '17  
Sequential group decision-making processes, such as online event scheduling, can be subject to social influence if the decisions involve individuals' subjective preferences and values. Indeed, prior work has shown that scheduling polls that allow respondents to see others' answers are more likely to succeed than polls that hide other responses, suggesting the impact of social influence and coordination. In this paper, we investigate whether this difference is due to information cascade effects
more » ... n which later respondents adopt the decisions of earlier respondents. Analyzing more than 1.3 million Doodle polls, we found evidence that cascading effects take place during event scheduling, and in particular, that early respondents have a larger influence on the outcome of a poll than people who come late. Drawing on simulations of an event scheduling model, we compare possible interventions to mitigate this bias and show that we can optimize the success of polls by hiding the responses of a small percentage of low availability respondents.
doi:10.1145/3018661.3018725 dblp:conf/wsdm/RomeroRR17 fatcat:bnp2wlbirbgj5jmvgkh5a5xnke