New sources of data for survey research: challenges and opportunities 1
|Convenor||Mr Arnaud Wijnant (CentERdata – Tilburg University )|
Responding to open-ended questions is more time-consuming compared to closed questions. In case of mobile devices, it is plausible to assume that open-ended questions are skipped more often or answers could be shorter than if the survey were completed on a computer.
Using survey data, we demonstrate that there are fewer differences linked to the participation channel as expected. We do not find any evidence for skipping the open-ended questions. However, the answers provided on a mobile device are significantly shorter. Furthermore, there are no differences concerning the use of “don’t know” options.
The contemporaneous salience of issues in the public is an important concept in the study of politics and public opinion. Standard survey-based measures have well-known drawbacks. Most importantly, conducting surveys is costly, which makes tracking of salience over time difficult and limited to few topics. In this paper, I propose an alternative measure that builds upon Wikipedia page view statistics. I present validation efforts in which I compare time series based on Wikipedia page view statistics with traditional salience measures from political polls as well as figures from Google Trends.
What if one wanted to measure public opinion, but public opinion polls did not exist? How to assess public opinion? First, how was public opinion measured before the advent of public opinion polls in the 1930s? Second, even in the public opinion polling era, alternatives have been advanced as either substitutes for or supplements to public opinion polls. A case study of Hong Kong in 2014 illustrates possibilities. Finally, in the alleged post-public opinion polling period, Internet/ social media/Big Data alternatives to public opinion polls are being advocated. Advantages and disadvantage of public opinion polls and their alternatives
Measuring physical activity presents challenges. Most large-scale studies use self-reports to measure physical activity, which is subject to biases. Devices that measure activity directly offer a solution.
The sixth sweep of the Millennium Cohort Study collects data from study members when they are 14 years old and includes data collection using activity monitors.
This paper details two pilot studies conducted before the survey, which assessed the feasibility of collecting activity monitor data from 14-year olds and compared two different devices. The findings have informed the data collection approach taken, and provide insight into the implementation of activity