I recently asked if Mormons are alone among sizable population subgroups in the US in experiencing eugenic fertility patterns.
I failed to even evaluate Jews (there go my alt right credentials!). My thought process was the orthodox have lots of kids while secular Jews don’t and the former are dullards while the latter have the highest mean IQ in the world. Ergo, Jewish fertility must be dysgenic.
There are limitations inherent in the GSS data on the 2% that make those assumptions difficult to put to the test here. Of the total Jewish survey sample, only 5% identify as orthodox. A plurality identifies as reform with the rest being conservative or “none of these”. With only a handful of orthodox responses to work with, they can’t be reliably separated out from the rest of the Jewish sample.
There is also the issue of Jewishness as a religion, an ethnicity, or some combination of the two. The survey only asks about Jewishness in the context of religion, not of ethnicity. Consequently, some portion of ethnic Jews surely identified as having no religion rather than as Jewish. Yet a lot of irreligious Jews must also be religiously identifying as Jewish as well, because the survey’s contingent of religiously-identified Jews is, much to Isaac’s relief, not particularly godly:
That said, among the mostly reform and conservative Jewish sample (n = 449), those with more on the ball make more out of their balls. Their fertility pattern is directionally similar to Mormons, but the Jewish fertility curve is shifted considerably to the left of the LDS one. For good measure, those who indicated they had no religion (n = 3,167) are also included, but only a fraction of this group is ethnically Jewish. To avoid language fluency issues, responses are restricted to those born in the US:
GSS variables used: JEW, RELIG(1)(2)(3)(4)(9), BORN(1), WORDSUM(0-5)(6-7)(8-10), GOD(1-2)(3-5)(6)