1. IQ rate of identical twins among some of the students in the state Khartoum
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Abstract
This study aim at exploring the monozygotic and dizygotic twins intelligence scores in the basic and secondary school of Khartoum State and exploring the relationship of twins intelligence to some demographic factors. The researcher used the descriptive correlation method. The standard Progressive Matrices (SPM) administrated to selected sample consist of 60 children from basic and secondary schools in Khartoum state, their age range is 9 to 17 years. The number of monozygotic and dizygotic male twins is 16 (53.3%), while the number of monozygotic and dizygotic female twins is 14 (46.7%). The results proved that there is significant correlation in the intelligence of monozygotic twins and non-significant for dyzygotic twins in contribution of genetics. Also there are significant statistical difference in the intelligence scores of monozygotic and dizygotic twins in favour of monozygotic twins. In addition to a significant differences between monozygotic twins and dizygotic twins in intelligence scores due to sex factors (male and female). Meanwhile, respecting factors of UCMAS training program and father job, the significant is for monozygotic twins not for dizygotic twins.
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