A plethora of evidence for genetic influence of American race-ethnic gaps in intelligence ...All the groups show average differences. No surprise there. What is interesting is that is shows correlations between IQ and religion.
Intelligence tests are excellent predictors of school and job performance, and racial/ethnic differences in mean IQ are common. Based on five lines of evidence, Warne (2021) builds a case for partly genetic causes of differences in general intelligence (g) across American self/parental-identified race or ethnicity (SIRE).
Okay, you are not going to get smarter by converting to a different religion. There are genetic factors at work, and you cannot do anything to change those.