Assertion: thc's significance | /r/HasProperty | placebo
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Source sentences:
text: Significance of placebo vs. THC was tested by paired t-test (two-tailed) in Experiment 1 (placebo vs. 15 mg THC) and tested by one-way repeated-measures analysis of variance (ANOVA) in Experiment 2 (within-subjects factor Drug containing three levels: Placebo, 7.5 mg THC, and 15 mg THC).