. Author manuscript; available in PMC: 2008 Oct 28.

Published in final edited form as: Vis cogn. 2006;14(4-8):749–780. doi: 10.1080/13506280500195292

Table 2.

Testing the hypothesis that performance on WAS trials in Experiment 4 differs from chance (25%).

	Mean	DF	t-Value	P-Value	95% Lower	95% Upper
unattended	.289	9	.792	.4490	.178	.400
2-back	.742	9	16.781	<.0001	.676	.808
4-back	.416	9	5.772	.0003	.351	.481
8-back	.310	9	1.687	.1258	.230	.390
12-back	.292	9	.931	.3764	.190	.394