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. 2014 Dec 29;9(12):e115645. doi: 10.1371/journal.pone.0115645

Table 3. Mean, Standard Deviation, and Range of Verbal Memory Variables According to Group and Gender.

Ecstasy Users (N = 48) Marijuana Users (N = 17) (E-MJ) z-score difference)
Males (N = 26) Females (N = 22) Males (N = 8) Females (N = 9)
CVLT-2 Variable M SD Range M SD Range M SD Range M SD Range Men Women
Trial 1 −.48 .90 3.00–1.50 −.40 1.29 −1.50–1.00 .25 1.31 −1.00–2.50 .25 1.31 −1.00–2.50 −.73 −.65
Trial B −.94 .95 −3.00–.50 −.60 .22 −1.00–−.50 –1.00 .96 –3.00−0 −1.00 .96 −1.00–2.50 .06 .40
SDFR −.40 1.05 −2.00–1.50 −.20 .84 −1.50–.50 0 .54 −.50–1.00 0 .53 −3.00–0 −.40 −.20
SDCR −.52 .92 −2.50–1.00 −.50 1.23 −2.00–1.00 .19 .70 −1.00–1.00 .19 .70 −.50–1.00 −.72 −.69
LDFR −.67 1.15 −3.00–1.00 −.60 1.08 −2.00–.50 .19 .84 −1.00–1.00 .19 .84 −1.00–1.00 −.86 −.79
LDCR −.69 1.05 −3.00–1.00 −.60 1.34 −2.50–.50 .13 .84 −1.00–1.00 .13 .84 −1.00–1.00 −.82 −.73
LDFR vs. SDFR −.27 .87 −2.50–2.00 −.40 .42 −1.00–0 .19 .53 −.50–1.00 .19 .53 −.50–1.00 −.46 −.59
Recall Disc. −.50 .88 −2.00–1.50 −.50 .71 −1.50–0 .25 1.20 −1.50–2.00 .25 1.20 −1.50–2.00 −.75 −.75
Recog. −.50 .91 −2.50–1.00 −.10 .55 −1.00–.50 −.06 .68 −1.00–1.00 −.06 .68 −1.00–1.00 −.44 −.04

Z-scores are reported except retention (positive scores indicate poorer retention). (E-MJ) indicates the difference in mean scores between the ecstasy (E) and MJ users for all components of verbal memory except retention. Abbreviations: SDFR  =  Short Delay Free Recall, SDCR  =  Short Delay Cued Recall, LDFR  =  Long Delay Free Recall, LDCR  =  Long Delay Cued Recall, LDFR vs. SDFR =  Long Delay Free Recall vs. Short Delay Free Recall, Recall Disc.  =  Recall discriminability, Recog.  =  Total recognition.