Conference Proceedings

Context-Informed Scheduling and Analysis: Improving Accuracy of Mobile Self-Reports

Niels van Berkel, Jorge Goncalves, Peter Koval, Simo Hosio, Tilman Dingler, Denzil Ferreira, Vassilis Kostakos

Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems - CHI '19 | ASSOC COMPUTING MACHINERY | Published : 2019

Abstract

Mobile self-reports are a popular technique to collect participant labelled data in the wild. While literature has focused on increasing participant compliance to self-report questionnaires, relatively little work has assessed response accuracy. In this paper, we investigate how participant context can affect response accuracy and help identify strategies to improve the accuracy of mobile self-report data. In a 3-week study we collect over 2,500 questionnaires containing both verifiable and non-verifiable questions. We find that response accuracy is higher for questionnaires that arrive when the phone is not in ongoing or very recent use. Furthermore, our results show that long completion ti..

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