Two datasets of socioeconomic data was obtained from different sources. Both were factor analyzed and revealed a general factor (S factor). These factors were highly correlated with each other (.79 to .95), HDI (.68 to .93) and with cognitive ability (PISA; .70 to .78). The federal district was a strong outlier and excluding it improved results.
Method of correlated vectors was strongly positive for all 4 analyses (r’s .77 to .92 with reversing).
Key words: intelligence, IQ, general socioeconomic factor, S factor, inequality, Mexico, Mexican states