This study aims to analyze the quality of decision-making (DM) of male volleyball school athletes, comparing the situations of setting (SE) and blocking (BL). Fifteen male volleyball school athletes from Federal District participated (on the mean of age 16.6±1.1 years old; systematized training time of 2.8±1.6 years). Scenes of SE and BL of Declarative Tactical Knowledge Test in Volleyball (DTKT:VB) were used a...