Table 3.

Bivariate Spearman rank-order correlation values (ρ) between substance use frequency in the past year and cognitive variables

	Alcohol	Cannabis	Amphetamine	MDMA	MA
Trial 1	−.25	−.15	−.11	.06	−.25
Trial 5	−.39	−.39	−.02	−.33	−.41**
Cued recall	−.27	−.29	.08	−.23	−.14
Go/noGo	.08	.16	.01	..10	.13
Alertness	.02	.03	−.07	.21	.23

Notes: ** p < 0.01; trial 1, number of words recalled on trial 1 of the VLMT; trial 5, number of words recalled on trial 5 of the VLMT; cued recall, number of words of the VLMT correctly recognized after a delay, corrected for recognition mistakes; go/noGo, inverse efficiency score of the “go/noGo” subtest of the TAP; alertness, mean reaction time of the “alertness” subtest of the TAP in milliseconds; VLMT, Verbal Learning Memory Test; TAP, Test of Attentional Performance; MDMA, 3,4-methylenedioxymethamphetamine (“ecstasy”); MA, methamphetamine