Relationship of some variables on the battery performance of children of the Eysenck personality Zagazig Faculty of Education. The effect of using a form Robert Jane offenders education on academic achievement and retention in the geography of the students of general education in the Kingdom of Saudi Arabia College of Education Menoufia / 1992 Relationship to the locus of control to achievement motivation in college students in the Sultanate Oman Psychological studies . The relationship between extroversion / introversion and cognitive independence in a sample of students Omani/Psychological. Studies. Following the interaction of the organizations developed and extraversion / introversion on academic achievement of college students Psychological studies. Study of the relationship between motivation for achievement and neuroticism and cognitive style on a sample Of Omani students