River,
Here are some of the stats I had in mind. One of the books I was thinking of in particular, has been borrowed out. However, here is some pertinent information about church stances on doctrine and how that relates to people coming to or leaving the faith.
91% of formerly unchurched people claimed that doctrine was an important reason why they joined their church.
89% of people who transferred churches claimed that doctrine was an important reason.
Thom Rainer writes, "The formerly unchurched, however, were not just interested in the facts of doctrine; they were insistent that the churches should be uncompromising in their stand. These facts fly in the face of an increasingly pluralistic and theologically tolerant culture."
Rainer says that the sentiments of those they interviewed continued to coincide with a book written 30 years earlier entitled "Why Conservative Churches are Growing" by Dean Kelley. Reasons were that people wanted in their faith...
1) churches that believe the Bible and make no apology for their beliefs
2) distinctive code of conduct that emanates from the conviction of their beliefs
3) commit significant resources to their causes based on the teachings of Scripture
4) have missionary zeal that comes from belief that eternal salvation comes from Christ alone and eternal damnation is a reality without Christ.
Rainer also quotes Barna's Study saying, "Doctrine is important. Both our research and Barna's research indicate that it is the single most critical issue in reaching people. When will churches in America grasp t his reality?"
Then the study took another turn. After 9 out of 10 said doctrine was very important to them in choosing a church, they were asked "Why." Thom Rainer writes, "The most frequent response was their desire to know truth or absolutes."
Rainer also says, "One question we routinely asked in our interviews was, "What brought you back to church?" We received answers such as the following relating to the issue of certitude.
"The church is uncompromising on the Word."
"The pastor spoke the Word of God as truth. Didn't 'fluff-up' sermon. Called 'sin' sin in a loving way."
"You could tell that people really believed what was taught and preached."
"All the material they gave to visitors in the worship service tells you clearly that the church has convictions about what it believes."
"I have never been to a Sunday school class where the teacher was so well prepared and taught with so much authority and conviction."
He concludes the chapter on this aspect of the research with these points:
*More formerly unchurched spoke of the importance of doctrine in their decision-making process than any other factor.
*The doctrine that attracted the formerly unchurched was not just any belief system, but a theology that could best be described as conservative, evangelical, and uncompromising.
*Many indicated that their interest in doctrine was a consequence of their desire to discover absolutes in a culture where few absolutes are perceived to exist.
*Those who spoke of the importance of doctrine could discern easily where churches were strong or weak in their affimation of beliefs. The formerly unchurched were attracted to churches that had doctrinal certitude.
*The pastor was the key person to whom the formerly unchurched look for certitude of beliefs. They did not look to the pastor alone, however, but to the entire congregation.
*It appears that doctrinal conviction not only attracts the unchurched, but it may have a major role in their assimilation after they become Christians.
*Without exception, when the formerly unchurched told us of their attraction to churches with doctrinal conviction, they never described the spirit of the churches with such negative words as harsh, judgmental, or legalistic. When they described the spirit or ethics of people of the church they typically used words that could best be summarized as, "speaking the truth in love."
Now this book, "Surprising Insights from the Unchurched" focused specifically on research done with the formerly unchurched. Another book (the one I do not have at the moment) deals with growing and healthy churches. It is entitled "Breakout Churches." The research here shows the same type of statistics with churches that are healthy and growing. Believers are more likely to leave and the churches shrink if their doctrine is not classified as conservative, evangelical and uncompromising.
Here is another article of note. You can find it at:
http://www.huffingtonpost.com/william-b-bradshaw/mainline-churches-past-pr_b_4087407.html
There is no question that the very significant contributions Mainline Protestant denominations have made to the United States deserve mention in our history books. But times are changing.
Every year since the early years of our country until the mid-1960s the membership of each of these denominations and the number of their respective churches increased. Every year since about 1965 the membership of each of these denominations and the number of their respective churches have decreased. Studying official membership figures of the Mainline denominations reveals that in the early fifties the combined membership of these denominations was somewhere in the neighborhood of forty million members or active attendees. Now that number has shrunk to approximately 15 million -- a startling decline of nearly sixty percent.
At the same time, the number of evangelical, fundamentalist, and/or charismatic Protestant denominations and independent churches and the number of people they represent have increased every year -- by even greater numbers than the losses recorded by the Mainline Protestant Churches.
So again, I would say that it is not the rigid, doctrinally conservative churches that are more likely to have their children give up their faith at the secular university. Rather the more liberal or "progressive" churches are the ones in steep decline. Id say both camps are seeing their children lose faith at the secular university, but statistics show that conservative evangelicals are not losing members while the mainline denominations are losing them very rapidly.