Last summer, researchers at Michigan State University reported that one in five Michigan adults, or about 1.7 million people, don’t want children and therefore are child-free. Although that number was surprisingly large to many data has now been confirmed in a follow-up study.
“We found that 20.9% of adults in Michigan do not want children, which closely matches our earlier estimate of 21.6%, and means that over 1.6 million people in Michigan are child-free,” said Jennifer Watling Neal, MSU professor of psychology and co-author of the study. “Michigan is demographically similar to the United States as a whole, so this could mean 50 million to 60 million Americans are child-free.”
The new study published in PLOS ONE attempted to replicate the original study by using the same methods, but with a new sample of people. The researchers used data from a representative sample of 1,000 adults who completed MSU’s State of the State Survey, conducted by the university’s Institute for Public Policy and Social Research. To avoid any risk of cherry-picking results, the researchers preregistered the study by recording in advance exactly how the study would be conducted and what they expected to find.
“Many adults are child-free, and there do not seem to be differences by age, education or income,” said Zachary Neal, associate professor of psychology at MSU and co-author of the study. “However, being child-free is somewhat more common among adults who identify as male, white or who have always been single.”