Neuropsychological test battery scores (group means ( SD), n=28 in each group) and results of ANOVA (p) and post-hoc group comparisons. Significant group differences are indicated by bold characters
| Scores | p Value | Scheffé | |||||
|---|---|---|---|---|---|---|---|
| Ecstasy users | Cannabis users3-150 | Non-users | E/N | E/C | C/N | ||
| Tonic alertness: | |||||||
| RT (ms) | 218.9 (28.2) | 221.1 (26.3) | 218.7 (27.5) | NS | |||
| Phasic alertness: | |||||||
| RT (ms) | 214.8 (24.8) | 214.0 (26.7) | 214.7 (25.2) | NS | |||
| Selective attention (go/no go): | |||||||
| RT (ms) | 532.0 (65.4) | 484.4 (57.9) | 478.6 (48.4) | <0.002 | + | + | |
| Divided attention: | |||||||
| RT (ms) | 671.6 (57.0) | 625.0 (35.1) | 638.7 (69.7) | <0.01 | − | + | − |
| Intermodal integration (attention): | |||||||
| RT (ms) | 412.2 (80.7) | 364.9 (44.8) | 380.5 (49.2) | <0.02 | + | ||
| Visual scanning: | |||||||
| Non-critical trial RT (ms) | 3281.1 (1017.1) | 3416.3 (868.2) | 3782.2 (808.6) | NS (0.10) | |||
| Critical trial RT (ms) | 1958.5 (493.7) | 1921.3 (445.7) | 1985.1 (465.1) | NS | |||
| Correlation RT/position (Z transformed) | 0.663 (0.480) | 0.854 (0.410) | 0.872 (0.413) | NS (0.14) | |||
| Stroop test: | |||||||
| Interference factor | −3.84 (4.38) | −3.86 (6.13) | −3.10 (6.00) | NS | |||
| Corsi (visual-spatial memory span) | 5.82 (0.77) | 6.18 (0.90) | 6.04 (1.04) | NS | |||
| Digit span: | |||||||
| Forward | 8.54 (1.84) | 8.93 (1.51 | 8.89 (1.29) | NS | |||
| Backward | 7.00 (2.34) | 8.00 (1.87 | 9.11 (2.67) | <0.01 | + | − | − |
| VLMT (verbal learning/memory): | |||||||
| Immediate recall | 7.82 (1.93) | 8.71 (2.03 | 9.82 (2.28) | <0.002 | + | − | − |
| Learning performance over five rehearsals | 6.25 (2.07) | 5.71 (2.11 | 5.07 (2.26) | NS | |||
| Interference effect by second list | 2.14 (2.07) | 1.50 (1.77) | 0.89 (1.55) | <0.05 | + | − | − |
| Memory performance after 30 minutes | 13.79 (1.75) | 14.43 (1.07) | 14.21 (1.03) | NS (0.12) | |||
| Number of repetitions required for learning | 4.46 (0.79) | 3.71 (1.15) | 3.29 (1.12) | <0.001 | + | + | − |
| VIG (visual learning / memory): | |||||||
| Immediate recall | 4.54 (1.62) | 5.57 (1.53) | 5.71 (1.24) | <0.01 | + | + | − |
| Learning performance over five rehearsals | 2.14 (1.46) | 1.43 (1.45) | 1.57 (1.60) | NS (0.14) | |||
| Number of repetitions required for learning | 4.61 (0.96) | 4.00 (1.41) | 4.11 (1.13) | NS (0.12) | |||
| Word fluency: | |||||||
| Phonological | 17.64 (3.62) | 18.87 (3.49) | 20.37 (6.37) | NS (0.15) | |||
| Semantic | 25.25 (7.64) | 28.00 (5.46) | 28.54 (6.49) | NS (0.09) | |||
| With alternating criterion | 15.30 (2.77) | 16.04 (2.60) | 16.68 (3.91) | NS | |||
| LPS-4 (logical thinking, problem solving) | 25.96 (4.10) | 29.46 (4.19) | 29.50 (3.64) | <0.001 | + | + | − |
| Mosaic test (visuoconstruction, strategical planning) | 36.11 (6.09) | 40.86 (5.57) | 40.39 (7.50) | <0.01 | + | + | − |
| General knowledge | 15.29 (3.44) | 17.82 (3.44) | 17.61 (2.63) | <0.01 | + | + | − |
| Score questionnaire for memory problems | 27.0 (10.61) | 29.86 (10.95) | 24.04 (8.0) | NS (0.09) | |||
+Significant group difference; E/N=ecstasy users/Non-users; E/C=ecstasy users/cannabis users; C/N=cannabis users/Non-users.
↵3-150 Cannabis users=persons who were matched for cannabis use with the ecstasy users.