The analysis finds that people who have switched faiths (or joined a faith after being raised unaffiliated with a religion) are indeed slightly more religious than those who have remained in their childhood faith, as measured by the importance of religion in their lives, the frequency with which they attend religious services and other measures of religious commitment.
However, the analysis also finds that the differences in religious commitment between converts and nonconverts are generally very small and are more apparent among some religious groups than among others.
One of the most striking findings of the U.S. Religious Landscape Survey, conducted by the Pew Forum in 2007, was the large number of people who have left their childhood faith.
According to the survey, roughly half of all Americans say they have left the faith in which they were raised to adopt another faith or no faith at all, or if they were not raised in a religion, they have since joined one.