Stroop, Letter-Number Sequency Task, WSCT and FrsBe means (standard deviation).

The ANOVA column shows results for the main effect of Group (ayahuasca users vs. controls). df = degrees of freedom. Ayahuasca = ayahuasca-using group. W-Words; C-Colors; IW-Color incongruent words; RI-Resistence to Interference. LNS = Letter-Number sequency; N_tot = number of total errors; N_pers = number of perseverative errors; N_nonpers = number of non-perseverative errors; N_cat = number of achieved categores; Fail = failures no maintain set.