Table 3.

Summary of problems identified in usability testing and solutions incorporated into second prototype of the ADHD personal health application

Identified Problem	Severity Description/Reason	Design Features Embedded Within the Second Prototype
Purpose of system unclear	Moderate with regard to satisfaction with user experience	Revised introductory video to better explain system
Visually bland	Minor in short term for testing purposes, more significant for actual use in field	No changes for performance prototype
Confusion with meaning of dose and frequency	Severe in that total daily dose exposure cannot be calculated	Revised semantics in plainer language
Entry of too much detail into dynamic search creates errors	Severe in that medication name is primary branch point for all other details	Limited algorithmic matching to first five alphabetical characters entered
Navigation within behavioral survey problematic	Moderate with regard to increased frustration and potential for missing data	Behavioral survey with simplified layout and introductory video explaining navigational features
Confusion with terminology in behavioral survey	Moderate with regard to potential inaccuracies in responses	Text-specific help feature added