Usability review materials


When conducting a usability review, you can use a word processor to note issues as you identify them.
We use a simple table like the one below.

Drawing of a table showing: Issue number, Issue, Principle violated, Severity and Recommendation

Some reviewers prefer to make hand-written notes. However, working online reduces the need for re-keying.
You should also note the principle (heuristic) violated as you identify each issue. This makes it easier to
sort the issues subsequently, and reduces the amount of time needed to write a report.

The following is an example of the table completed for one issue:

Drawing of a table showing: Issue number, Issue, Principle violated, Severity and Recommendation

You can
download a PDF version of the table
(File size: 88 KB).

Tips

If you do not have a word processor when reviewing, consider using Notepad (in Windows) or a
similar editing package.

Whatever format you choose, try to be consistent in your layout. This greatly reduces the effort needed to analyse the data and produce a report.

Avoid listing an issue as violating multiple principles, as this makes it more difficult
to position it appropriately within the report.

If you have a lot of issues, consider printing them out and conducting an affinity diagramming exercise
to help come to grips with them.

If the principles listed do not adequately meet your requirements, add your own. For example,
we added ‘Marketing’ as a principle in a report for one client.

Severity rating

Severity ratings are difficult. You can use a simple matrix as a guide. The following matrix
includes Frequency (how often will the user encounter the issue?) and Impact (how big an affect will
it have?). However, you should consider changing a rating if the matrix yields a result
that seems to be inappropriate.

Drawing of a severity matrix showing Frequency and Impact. The matrix is expressed in words in the following text.

This can also be expressed as follows:

  • Low + Low = Low
  • Low + Medium = Medium
  • Low + High = Medium
  • Medium + Medium = Medium
  • Medium + High = High.