I found more data (from the Survey of Inmates in Local Jails) on the question of whether criminals have fewer kids than non-criminals because of being locked up. I calculated the mean number of kids--biological, step, and adopted--of jail inmates ages 45-54 (sample size = 537). It's 3.04--not lower than the general population. Let's see if family size falls with a more serious criminal history:
Mean number of children
One lifetime arrest 3.00
More serious criminals have just as many kids as minor ones, and as many as non-criminals. The correlation between number of offspring and number of arrests is .04--basically non-existent. Evidently, criminals are sufficiently alpha to have as many kids as anyone else, in spite of their low social status and time behind bars.
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