Table 1.

Cognitive performance scores

No drugNMPH conditionNChange (Δ)% ChangeZp
IQ110.4 ± 12.114
TMT-A (s)17.5 ± 4.51916.4 ± 3.520−1.17−6.67−1.1870.235
TMT-B (s)34.1 ± 9.21933.5 ± 9.820−0.62−1.82−0.5230.601
Stroop interference30.0 ± 8.12029.2 ± 8.120−0.74−2.47−0.7090.478
Decision bias β0.64 ± 0.90190.34 ± 0.08820−0.3−53.13−1.9330.053
Sensitivity d′2.00 ± 0.90192.23 ± 0.93200.2311.50−1.0230.306
dsCPT hits6.74 ± 2.02197.20 ± 1.79200.466.82−0.7420.458
d2 concentration performance246.0 ± 30.919260.8 ± 28.12014.86.02−2.8650.004*