Immersive VR-based instruction in vocational schools: effects on domain-specific knowledge and wellbeing of retail trainees

Empirical Research in Vocational Education and Training

Table 3 Instruments and reliability

Scales (number of items)	M (SD)	Reliability	Example item	Source
Domain-specific knowledge		EAP/PV		In-house development
Pretest (27)	8.22 (3.84)	0.69	Which of the following areas is typically found in a salesroom?
Posttest (27)	13.81 (4.34)	0.71	What is understood by the term “secondary placement”?
Motion sickness		α		Bimberg et al. (2020)
T1^a (9)	2.49 (0.99)	0.88	During today’s IVR lesson, i experienced general discomfort
T2^a (9)	2.69 (1.16)	0.94	During today’s IVR lesson, i experienced headache
T3^a (9)	2.67 (1.11)	0.92	During today’s IVR lesson, i experienced blurred vision