Fig 1.
Processes carried out to develop heuristics for the evaluation of interactive systems for children with ASD.
Table 1.
Group of similar heuristics.
Fig 2.
Mapping between guidelines and original heuristics.
Fig 3.
Grouping of remaining guidelines and creation of heuristics.
Table 2.
Modified set of heuristics.
Table 3.
Demographic profiles of experts.
Table 4.
Questions and options.
Table 5.
Descriptions of questions.
Table 6.
Comments of experts and the actions performed.
Table 7.
Demographic information of participants.
Fig 4.
Hypothesis model.
Fig 5.
Number of usability problems and average severity ratings found in System 1 by both groups.
Fig 6.
Number of usability problems and average severity ratings found in System 2 by both groups.
Table 8.
Number of problems and average severity rating using different types of heuristics in both of the systems reported by control and experimental groups.
Fig 7.
Number of usability problems and average severity ratings found in System 1 and System 2 using 5 new heuristics of the modified set.
Table 9.
Examples of problems found using 5 improved heuristics.
Table 10.
Examples of problems found by frequently violated heuristics.
Fig 8.
Estimated marginal means of problem identification by both sets of heuristics.
Fig 9.
Estimated marginal means of problem identification among four groups at different severity levels.
Fig 10.
Estimated marginal means of problem identification by groups 2 and 4 at different severity levels.
Fig 11.
Analysed model when a = 0.
Fig 12.
Analysed model when a≠0.
Table 11.
Results of both phases of study.