[Genetic and environmental aspects of mathematical disabilities].

Mathematics has become highly important in today's high-tech life. Success in everyday life requires the presence of mathematical knowledge, which, in turn, appears to be the basis for any innovative scientific activity. However, a large percentage of the population demonstrates mathematical disabilities.

Brain derived neurotrophic factor gene (BDNF) and personality traits: the modifying effect of season of birth and sex.

Personality traits are complex phenotypes influenced by interactions of multiple genetic variants of small effect and environmental factors. It has been suggested that the brain derived neurotrophic factor gene (BDNF) is involved in personality traits. Season of birth (SOB) has also been shown to affect personality traits due to its influences on brain development during prenatal and early postnatal periods.