Figure 1. Neuropsychological assessment. A significant decrease in attention performance was observed in cannabis users when assessed by the direct spatial span test (A) but not the direct digit span test (B) . No significant differences between groups were observed in terms of working memory, assessed by the inverse digit span test (C) and the inverse spatial span test (D) . Executive functions were evaluated with the verbal fluency test(E) , and social and emotional cognition was assessed with the emotion recognition test (F) : * p < 0,05 (Student’s t-test : Control subjects n = 7, Cannabis users n = 6).