Table 3 Cronbach’s α coefficients, by rater and subscale

Engagement

.85 (.76–.91)

.84 (.75–.90)

Functionality

.77 (.63–.87)

.87 (.79–.92)

Aesthetics

.92 (.86–.95)

.88 (.81–.93)

Information^a

.73 (.57–.84)

.71 (.54–.83)

MARS total score

.90 (.85–.94)

.91 (.87–.94)

Subjective quality

.95 (.92–.97)

.93 (.89–.96)