
Researchers found the cause of the “noise” when they compared the cellphone results with the results of their online survey: social desirability bias. According to studies of polling methods, people answer questions differently when they’re speaking to another human. It turns out that sometimes people overstate their Bible reading if they suspect the people on the other end of the call will think more highly of them if they engaged the Scriptures more. Sometimes, they overstate it a lot…
Smith said that when Pew first launched the trend panel in 2014, there was no major difference between answers about religion online and over the telephone. But over time, he saw a growing split. Even when questions were worded exactly the same online and on the phone, Americans answered differently on the phone. When speaking to a human being, for example, they were much more likely to say they were religious. Online, more people were more comfortable saying they didn’t go to any kind of religious service or listing their religious affiliation as “none.”…
After re-weighting the online data set with better information about the American population from its National Public Opinion Reference Survey, Pew has decided to stop phone polling and rely completely on the online panels…
Pew’s analysis finds that, today, about 10 percent of Americans will say they go to church regularly if asked by a human but will say that they don’t if asked online. Social scientists and pollsters cannot say for sure whether that social desirability bias has increased, decreased, or stayed the same since Gallup first started asking religious questions 86 years ago.
This shift regarding studying religion highlights broader considerations about methodology that are always helpful to keep in mind:
- Both methods and people/social conditions change. More and more surveying (and other data collection) is done via the Internet and other technologies. This might change who responds, how people respond, and more. At the same time, actual religiosity changes and social scientists try to keep up. This is a dynamic process that should be expected to change over time to help researchers get better and better data.
- Social desirability bias is not the same as people lying to researchers or being dishonest with researchers. That implies an intentional false answer. This is more about context: the mode of the survey – phone or online – influences who the respondent is responding to. And with a human interaction, we might respond differently. In an interaction, we with impression management in mind where we want to be viewed in particular ways by the person with whom we are interacting.
- Studying any aspect of religiosity benefits from multiple methods and multiple approaches to the same phenomena under study. A single measure of church attendance can tell us something but getting multiple data points with multiple methods can help provide a more complete picture. Surveys have particular strengths but they are not great in other areas. Results from surveys should be put alongside other data drawn from interviews, ethnographies, focus groups, historical analysis, and more to see what consensus can be reached. All of this might be out of the reach of individual researchers or single research projects but the field as a whole can help find the broader patterns.