ENThe article presents a research aimed to determine externality – internality and causal attribution style peculiarities and links among 1st and 4th form gymnasium students. During the research it was determined that girls are more internal personalities than boys, also there was determined a statistically significant connection between student externality – internality and causal attribution style, i.e. with the increase of internality events are interpreted in a more optimistic way. It was determined, that externality – internality does not differ among 1st and 4th form gymnasium students, and there are mostly internal personalities. There were no statistically significant causal attribution style differences determined among 1st and 4th form gymnasium students and among boys and girls.