There is reason to believe that a Darwinian outlook increases fertility among elites.
Using GSS data, I formed two groups. The first is of math, computer, and physical scientists (n = 126). The second group includes biologists, agricultural and medical scientists, physicians, and veterinarians (n = 85). I followed this strategy on the assumption that the two groups are similar but that evolutionary realities are closer to the center of the latter group’s worldview.
Next, I calculated the mean number of offspring. I limited the sample to people between the ages of 45 and 69. For the first group, the average is 1.62 children. It’s 2.04 for the biological group. Confidence intervals overlap just a bit, so the difference is not statistically significant at the .05 alpha level (two-tail test).
I still take this as evidence that a Darwinian view might encourage smart people to have more kids. In an age where fewer and fewer elites find religion credible, we need to be Darwin’s evangelists. Of course, values cannot be derived logically from the fact of evolution, but I think natalism could be psychologically compelling to many if their worldview were Darwinian.