Аннотация:Research on mental toughness (MT) in sport performance (Loehr, 1994; Goldberg,
1998; Connaughton, 2008; Gucciardi et al., 2015 etc.) has been limited by lack of a valid
measure for the construct in Russian. The questionnaire «Complex Assessment of Mental
Toughness and Adaptation in Sport» (Russian acronym - «COMPAS») was developed and
initially validated to assess MT in athletes. The purpose of current study was to examine the
factorial and construct validity of the nine-factor model of MT.