The Development and Psychometric Properties of the Visuospatial Working Memory Assessment (VWMA) for Children

Table 3

Analysis of the known-group method of the computerized test analyzed statistically using the independent sample -test ().

Format	Task		Independent -test for equality of means
				Df		Mean difference	Std. error difference	95% confidence interval of the difference
								Lower	Upper
Computerized test	-back	-back	1.61	59	.11	.74	.46	-.18	1.66
		-back with auditory interference	2.13	59	.04	.96	.45	.06	1.86
		-back with visual interference	2.48	59	.02	1.23	.50	.24	2.22
	Running memory	Running memory	5.34	59	<.001	1.57	.30	.98	2.16
		Running memory with auditory interference	6.23	59	<.001	1.69	.27	1.15	2.23
		Running memory with visual interference	5.86	59	<.001	1.60	.27	1.05	2.14
Tabletop test	-back	-back	3.52	59	<.001	1.14	.32	.49	1.78
		-back with auditory interference	5.34	59	<.001	2.01	.38	1.26	2.76
		-back with visual interference	3.05	59	<.001	1.07	.35	.37	1.78
	Running memory	Running memory	7.17	59	<.001	2.01	.28	1.45	2.57
		Running memory with auditory interference	8.40	59	<.001	2.27	.27	1.73	2.81
		Running memory with visual interference	8.03	59	<.001	2.19	.27	1.64	2.73

Note: .