Table 4.

Comparison of User Engagement Scale results across 15 participants for the assessment session (original version) and across 4 participants who opted for the training sessions (improved version), averaging 3 recordings per participant.^a

	Focused attention subscale	Perceived usability subscale	Esthetic appeal subscale	Reward factor subscale	Overall engagement score (out of 20)
Assessment session (original version), mean (SD)	3.486 (0.438)	3.667 (0.452)	3.907 (0.696)	4.007 (0.465)	15.07 (1.526)
Training sessions (improved version), mean (SD)	3.345 (0.238)	3.938 (0.172)	4.200 (0.452)	4.000 (0.141)	15.483 (0.415)

^aHigh engagement was observed for all sessions (overall engagement score of >15 out of 20).