That's the percentage of introverts in the American population according to the research of the Center for the Application of Pyschological Type. Their study, completed in 2003, along with two other studies conducted independently by other organizations, surveyed over 900,000 people.
This flies in the face of all the old research that introverts make up between 1/4 and 1/3 of the population. CAPT says it's NOT that there are now more introverts in the population than there were previously, it's that the sample size is broader and the study is more comprehensive. The old findings were based on research conducted in the 1960's(!)
This is pretty huge, because the assumption all along has been that the extroverted bias in our culture (and in churches) owed to the majority status that extroverts occupied. But now that we know that introverts are actually in the majority, it only demonstrates our culture's prejudice towards introverted ways of thinking and acting even more.
What's your response? Where do you want to take this?