A Framework of the Training Module for Untrained Observers in Usability Evaluation Motivated by COVID-19: Enhancing the Validity of Usability Evaluation for Children’s Educational Games

Table 2

Dimension criteria.

Dimension	Measurement items
Learnability [53]	(i) Selection of menu to start the game
	(ii) The command on navigational controls from one activity to another
	(iii) The level of completion of the task given to the user
	(iv) The level of completion of the task within the time frame given to the user
	(v) The number of errors committed while performing a task
	(vi) Fixation and scan path duration
Ease of Use [54]	(i) The amount of trouble it takes to move from one activity to another
	(ii) Time spent on understanding a process (game step)
	(iii) Time spent on watching a process (game step)
	(iv) Time spent on understanding (how and when) to pause the game
	(v) Time spent on understanding (how and when) to move from one level to another
Memorability [55]	(i) The time spent in accomplishing the first level of the game in the first attempt
	(ii) The time spent in accomplishing the second level of the game in the second attempt
	(iii) The difference in timings between the first and second attempts
Enjoyment [56]	(i) The level of concentration of the user when playing the game
	(ii) The level of immersion in the game that is experienced by the user
	(iii) The ease of distracting the user from the game
	(iv) The strength of feeling and sense of control over the game experienced by the user
	(v) The strength of motivation of the user to play again