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

Table 2

Test-retest reliability of VWMA based on statistical analysis using Cronbach’s alpha coefficient.

Format	Task		Intraclass correlation^b	95% confidence interval		test with true value 0
				Lower bound	Upper bound	Value
Computerized test	-back	Single measures	.80^a	.68	.87	8.84	.00
		Average measure	.89^c	.81	.93	8.84	.00
	-back with auditory interference	Single measures	.79^a	.68	.87	8.72	.00
		Average measure	.89^c	.81	.93	8.72	.00
	-back with visual interference	Single measures	.78^a	.66	.86	8.09	.00
		Average measure	.88^c	.79	.93	8.09	.00
	Running memory	Single measures	.98^a	.97	.99	117.03	.00
		Average measure	.99^c	.99	.99	117.03	.00
	Running memory with auditory interference	Single measures	.98^a	.96	.99	83.41	.00
		Average measure	.99^c	.98	.99	83.41	.00
	Running memory with visual interference	Single measures	.79^a	.68	.87	8.70	.00
		Average measure	.89^c	.81	.93	8.70	.00
Tabletop test	-back	Single measures	.44^a	.21	.62	2.56	.00
		Average measure	.61^c	.35	.77	2.56	.00
	-back with auditory interference	Single measures	.43^a	.20	.62	2.51	.00
		Average measure	.60^c	.33	.76	2.51	.00
	-back with visual interference	Single measures	.35^a	.10	.55	2.06	.00
		Average measure	.51^c	.19	.71	2.06	.00
	Running memory	Single measures	.35^a	.11	.56	2.09	.00
		Average measure	.52^c	.19	.71	2.09	.00
	Running memory with auditory interference	Single measures	.42^a	.19	.61	2.46	.00
		Average measure	.59^c	.32	.76	2.46	.00
	Running memory with visual interference	Single measures	.46^a	.23	.64	2.70	.00
		Average measure	.63^c	.38	.78	2.70	.00