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).