Wheelchair tennis, a Paralympic sport in constant growth, requires the extensive use of the cognitive process of decision-making, which is the process of the formation of preferences and the analysis and selection of responses. This process is influenced by many factors, and as personality profiles are also a cognitive component that guides subjects` actions and behaviours, this study aimed to analyse the personality traits that correlate with the decision-making of wheelchair tennis players. Nine athletes completed the Eysenck Personality Profiler V6 and had their decisions monitored by the Determination Test before a competition. The significance level considered was p = .05, and significant, positive and moderate correlations between the Inverse Efficiency Score (IES) and the psychoticism dimension (r = .684; p = .042) and the anxiety subscale (r = .672; p = .047), and significant, positive and strong correlations between the IES and the irresponsibility subscale (r = .777; p = .014) were identified. In conclusion, wheelchair tennis players with high irresponsibility, anxiety and psychoticism levels tend to show disadvantages in their decision-making quality prior to a competitive moment.
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