User agent strings

Satisficing in mobile web surveys. Device-effect or selection effect?

Last week, I wrote about the fact that respondents in panel surveys are now using tablets and smartphones to complete web surveys . We found that in the LISS panel, respondents who use tablets and smartphones are much more likely to switch devices over time and not participate in some months. The question we actually wanted to answer was a different one: do respondents who complete surveys on their smartphone or mobile give worse answers?

Which devices do respondents use over the course of a panel study?

Vera Toepoel and I have been writing a few articles over the last two years about how survey respondents are taking up tablet computers and smartphones. We were interested in studying whether people in a probability-based web panel ( the LISS panel ) use different devices over time, and whether siwtches in devices for completing surveys are associated with more or less measurement error. In order to answer this question, we have coded the User Agent Strings of the devices used by more than 6.