Table 4.

Example of a goal-action encoding for identifying all of the areas that contain more than one partial-area.

Task:	Determine how many areas have more than one partial-area
Goal:	Count the number of boxes with more than one partial area.
	Visually, areas are identified as a colored box and partial-areas are identified as white boxes within the colored area box. The user must identify the colored area boxes with more than one white partial-area box
	Alternatively, the user can identify the list of areas in the “Areas in Taxonomy” list in the Partial-area Taxonomy Details Display and sort them according to their number of partial-areas.
Duration (m:s)	4:32 (video time stamp: 13:36–18:08)
Problems	Usability problem: Screen complexity, Granularity
	• User looks for a way to identify solution without having to count boxes. Selects button “Derivation Options” on top of screen and reads options. Does not identify a way to help him solve a problem, so the user counts the boxes on the screen.
	• User counts three times to obtain correct result. Inconsistency/difficulty is likely because participant can't view the entire partial-area taxonomy while completing the task.
Prompts	The user was not prompted with any information
Result	The user was able to identify the areas that contained more than one partial-area