Parallel-cousin (FBD) marriage, Islamization, and Arabization

Islamization, along with an area's inclusion in the eighth-century Arab-Isl amic Khalifate (and its persistence within the Islamic world) is a strong a nd significant predictor of parallel-cousin (FBD) marriage. While there is a clear functional connection between Islam and FED marriage, the prescript ion to marry a FED does not appear to be sufficient to persuade people to a ctually marry thus, even if the marriage brings with it economic advantages . A systematic acceptance of parallel-cousin marriage took place when Islam ization occurred together with Arabization. (Cross-cultural research, Middl e East, marriage, Galton's problem).