%ABahirat, Paritosh%AHe, Yangyang%AKnijnenburg, Bart%D2018%I %K %MOSTI ID: 10072411 %PMedium: X %TExploring Defaults and Framing effects on Privacy Decision Making in Smarthomes %XResearch has shown that privacy decisions are affected by heuristic influences such as default settings and framing, and such effects are likely also present in smarthome privacy de- cisions. In this paper we pose the challenge question: How exactly do defaults and framing influence smarthome users’ privacy decisions? We conduct a large-scale scenario-based study with a mixed fractional factorial design, and use sta- tistical analysis and machine learning to investigate these effects. We discuss the implications of our findings for the designers of smarthome privacy-setting interfaces. Country unknown/Code not availableOSTI-MSA