Rey Junco has a new article suggesting that studies of the impact of Facebook on students need to account for the likelihood that self-reported usage times could be wrong:
If you are a regular reader of this blog, you likely already know that there is a growing body of research that examines how college students use Facebook and the outcomes of such use. For instance, researchers have examined how Facebook use is related to various aspects of the college student experience including learning, student engagement, multitasking, political activity, life satisfaction, social trust, civic engagement, and political participation, development of identity and peer relationships, and relationship building and maintenance.
All of the previous research has relied on self-reported measures of Facebook use (that is, survey questions). We know from research in other areas of human behavior that there are significant differences between actual and self reported behaviors. One of my favorite examples is a study where researchers found that up to 50% of self-reported non-smoking head and neck cancer patients were indeed smoking as measured by exhaled carbon monoxide levels and levels of a nicotine metabolite in their blood.
As you might imagine, differences between self-reported and actual uses of Facebook could drastically change or even negate findings of how Facebook use is related to the aforementioned outcomes. My latest paper published in Computers in Human Behavior, Comparing actual and self-reported measures of Facebook use examines these differences.