Table 2.

Changes in Declarative Memory between Treatment Conditions

Measure	Difference	Mean	Std. Error	D.F.	t-Value	P-Value	Effect Size
RAVLT Total T-Score	Phen+HC- Pbo+HC	8.27	2.65	33.1	3.12	<.01	0.74
RAVLT Total T-Score	Phen+HC- Pbo+Pbo	4.02	2.52	33.8	1.59	.12	0.36
RAVLT Total T-Score	Phen+Pbo Pbo+Pbo	−3.46	2.37	32.7	−1.46	.15	0.31
RAVLT Total T-Score	Pbo+HC- Pbo+Pbo	−4.25	2.52	32.4	−1.69	.10	0.38