The relationship between some specific hormones (Testosterone - Thyroid-Stimulating HormoneProlactin-Thyroxine) and some predictive factors of mathematical performance in university students has been investigated in this study. According to the forty tests (twenty for males and twenty for females) performed in this research, six significant differences were found between low and high hormone groups and predictive factors of mathematical performance. As can be inferred from the results of this study, hormones in question have more effects on predictive factors of mathematical performance for female students than male ones. Five significant differences found for female students, in contrast just one significant difference were found for male students. Also it should be mentioned that hormones in question have more effects on cognitive style of students than other variables in this study.

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