A usability study of a multicomponent video game-based training for older adults

Table 2 Results of questionnaire ratings

Questionnaires	T2 (n = 20)	T3 (n = 19)	z	p	r
System Usability Scale (SUS)	75.0 (67.5; 87.5)	75.0 (70.0; 85.0)	−0.240	.823	0.04
Game Experience Quesionnaire (GEQ)
Competence	2.5 (2.2; 2.7)	2.3 (2.2; 3.0)	−0.081	.945	0.01
Immersion	1.9 (1.5; 2.5)	2.3 (1.5; 2.7)	−0.881	.395	0.14
Flow	1.3 (0.7; 1.8)	1.0 (0.7; 1.5)	−1.281	.210	0.21
Tension	0.2 (0.0; 0.5)	0.2 (0.0; 0.3)	−1.279	.229	0.21
Challenge	1.2 (1.0; 1.5)	1.2 (0.7; 1.5)	−1.455	.157	0.24
Negative Affect	0.2 (0.0; 0.6)	0.5 (0.2; 0.8)	−3.134	.001*	0.51
Positive Affect	2.8 (2.4; 3.2)	2.8 (2.0; 3.3)	−0.569	.590	0.09

Data are median values (interquartile range). T2 = after three training sessions (between-measuement), T3 = after training intervention (post-measurement). *p < .05, p-values are exact sig. Two-tailed. T2-T3 differences were evaluated using Wilcoxon signed-rank test (n = 19). An effect size of r = 0.10 indicates a small effect, r = 0.30 a medium effect, and r ≥ 0.50 a large effect [86]. SUS scale ranges from 0 to 100. GEQ scale ranges from 0 = “not at all” to 4 = “extremly”. Two categories of the GEQ (tension, negative affect) have to be evaluated reversely which means a low score is favorable.

ISSN: 1861-6909