This blog has shown over and over again that religious people tend to be better-behaved than secular folks. Is this due to a tendency among church attenders to exaggerate, perhaps because they care more about what others think of them?
The Add Health Study asked participants if they never get sad. A fully honest people would not answer that they never get sad. I calculated the percentages of those who agree or strongly agree with the statement (sample size = 3,667, whites only):
Percent agreeing that they never get sad
Never attends 15.1
Less than once a month 12.0
Between once a month and once a month 12.7
Once a week or more 13.3
Those who never go to church have the highest percentage of people not telling the truth, but none of the differences is statistically significant. There is no evidence here that religious people are prone to give socially desirable answers.