Table 3.

Descriptive statistics of the behavioral tasks (i.e., n-back and go/no-go) performed in the scanner. Notably, for reaction time, we found significant reductions during the n-back task post-consumption for WCCE but not for the placebo. For accuracy, we found that accuracy during the go/no-go task declined post-consumption of the placebo but not post-consumption of WCCE.

N-back Behavioral Results
		Descriptives						t-Statistics
		Pre			Post						95% Confidence Interval of the Difference
		M	SD	SEM	M	SD	SEM	M	SD	SEM	Lower	Upper	t	df	Sig. (1-Tailed)
Post WCCE > Pre WCCE	Number of Errors	2.125	2.532	0.895	2.625	2.774	0.981	0.500	2.070	0.732	−1.231	2.231	0.683	7	0.258
	Reaction Time for Correct Trials	574.670	84.335	29.817	536.527	82.185	29.057	−38.144	29.567	10.454	−62.863	−13.425	−3.649	7	0.004
Post Placebo > Pre Placebo	Number of Errors	3.250	3.770	1.333	3.000	2.828	1.000	−0.250	1.389	0.491	−1.411	0.911	−0.509	7	0.313
	Reaction Time for Correct Trials	568.838	111.814	39.532	559.269	86.193	30.474	−9.569	66.678	23.574	−65.314	46.175	−0.406	7	0.349
Go/No-Go Behavioral Results
		Descriptives						t-Statistics
		Pre			Post						95% Confidence Interval of the Difference
		M	SD	SEM	M	SD	SEM	M	SD	SEM	Lower	Upper	t	df	Sig. (1-Tailed)
Post WCCE > Pre WCCE	Reaction Time for Successful Trials	387.953	38.729	15.811	381.654	44.676	18.239	−6.299	23.166	9.457	−30.610	18.011	−0.666	5	0.2675
	Accuracy	242.000	5.967	2.436	242.333	4.082	1.667	0.333	2.805	1.145	−2.610	3.277	0.291	5	0.3915
Post Placebo > Pre Placebo	Reaction Time for Successful Trials	397.013	26.611	9.408	395.563	41.291	14.599	−1.450	25.287	8.940	−22.591	19.691	−0.162	7	0.438
	Accuracy	242.125	5.463	1.931	239.625	7.170	2.535	−2.500	2.563	0.906	−4.643	−0.357	−2.758	7	0.014