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Table 3 d’, hit rate, FA (false alarm) rate, c (response bias) and reaction time (RT) for pre- and posttest, for the two strain groups, THC and THC + CBD. Means are reported with 95% within subject confidence intervals in brackets. The right columns indicate significant differences from the t-test on group differences (*: p < .05, **: p < .01)

From: Acute effects of naturalistic THC vs. CBD use on recognition memory: a preliminary study

  Strain group t test
THC THC + CBD
Pretest
d’ 1.62 [1.25–1.94] 1.93 [1.48–2.39] ns
Hit rate 0.72 [0.64–0.78] 0.77 [0.68–0.85] ns
FA rate 0.21 [0.14–0.29] 0.17 [0.13–0.22] ns
Response Bias 0.16 [−0.04–0.34] 0.07 [−0.06–0.24] ns
RT (s) 0.83 [0.78–0.90] 0.91 [0.83–1.01] ns
Posttest
d’ 0.84 [0.55–1.27] 1.99 [1.41–2.55] **
Hit rate 0.65 [0.52–0.74] 0.82 [0.74–0.89] *
FA rate 0.38 [0.28–0.45] 0.23 [0.15–0.34] *
Response bias −0.03 [− 0.24–0.41] −0.10 [− 0.24–0.04] ns
RT (s) 0.92 [0.83–1.07] 0.89 [0.79–1.02] ns