T&T Supermarket – Heuristic Evaluation Overview
T&T is a well-known and respected supermarket chain with a loyal network of in-person shoppers. In order to expand T&T’s online customer base, my group conducted a heuristic evaluation of their website; focusing on an important customer task flow: buying dinner.
Task Flow: Buying Groceries
Being able to browse online for specific items is very important. After all, shopping in-store is not always possible. Because of this, my group focused on improving the user’s experience when it comes to buying dinner.
We conducted the evaluation based on Neilson Norman’s heuristic measures.
Visibility of System Status
Tell the user what’s happening…
User Control and Freedom
Does the user have an emergency exit?
The best designs foresee errors and prevent them.
Flexibility and Efficiency of Use
Efficiency for new and returning users
Help Users Recognize and Recover from Errors
Clear error messages and markers telling the user what to do
Match Between System and the Real World
Will the user recognize it? Is it familiar?
Consistency and Standards
Users shouldn’t have to worry if different words mean the same thing.
Recognition Rather than Recall
The design should not depend on the user remembering information.
Aesthetic and Minimalist Design
If it’s not relevant, keep it out.
Help and Documentation
Can the user find help?
Based on the severity of usability problems, a number is assigned to each heuristic using a 1 to 5 rating scale.
0 = This is not a usability problem
1 = Cosmetic problem only: need not be fixed unless extra time is available
2 = Minor usability problem: fixing this should be given low priority
3 = Major usability problem: important to fix, should be given high priority
4 = Usability catastrophe: imperative to fix this
T&T Brand Style
My group started out by establishing the core style elements, based on the existing T&T brand guidelines. This was to help maintain consistency throughout our redesigned solutions.