Father’s occupational statusa | Son’s occupational status (%) | ||
Lower | Same | Higher | |
Upper white collar (IQ of 120+) | 46 | 54 | Not applicable |
Lower white collar (IQ of 110+) | 37 | 18 | 45 |
Upper blue collar (IQ of 100+) | 32 | 28 | 40 |
Lower blue collar (IQ of 90+) | 9 | 36 | 56 |
Size-unweighted simple average | 31% | 34% | 35% |