Athletes’ Personality Traits, Psychological Skills, and Psychophysiological Performance

This dataset includes measures of athletes’ personality traits, psychological skills, and psychophysiological performance indicators. The data were collected to examine how individual differences in self-regulation and personality relate to performance under cognitive and emotional load in sport contexts. Psychological measures were obtained using the Latvian Personality Inventory (LPI-v3s) and the Psychological Skills Inventory for Sport (PSIS-R5-L). Psychophysiological performance was assessed using the Vienna Test System (VTS) batteries. Raw item responses were processed according to validated scoring guidelines, with reverse-coded items recoded and subscale scores calculated as mean values.