Introduction: High perceived self-efficacy in teamwork is significant for the accomplishment of objectives typical of adolescence. The levels of trait-anxiety and state-anxiety among children and teenagers grow with age. Anxiety can be provoked by both situations at school and lack of acceptance from one's peer group. Girls with high levels of anxiety are more likely than boys to perceive themselves in negative terms. The objective of the study: The purpose of this study was to identify the relationship between self-efficacy in relation to teamwork and the level of anxiety considered as either a state or a trait (defined as a relatively fixed disposition). Resources and methodology: The survey covered 66 first-year schoolchildren from lower--secondary schools in Lublin. Tools used: The Self-Efficacy in Teamwork Questionnaire and
The State-Trait Anxiety Inventory for Children (STAIC).Study findings: A statistically significant correlation was found between gender and state--anxiety levels (r = 0.254, p <0.05), and trait-anxiety levels (r = 0.323, p <0.01), and the level of self-discovery as a result of social interaction (r = -0.265; p <0.05). Persons with low levels of self-discovery, concerning especially the determination of their preference for teamwork, achieved high scores in state-anxiety (37.5%). The obtained results prove that schoolchildren with high levels of trait-anxiety, and, consequently, state-anxiety, do not prefer teamwork. The proposed hypothesis was confirmed by the results of the study.