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My Portfolio / Usability Testing and Heuristic Evaluation

Usability Testing and Heuristic Evaluation

I started my career in human-computer interaction with usability research. My PhD involved testing sub-constructs of usability and investigating the impact of design decisions on reaction times. I went on to learn and apply various techniques for finding usability problems in real-life technology and systems: classic usability testing, usability heuristics and principles, cognitive walkthroughs, and the System Usability Scale (SUS).

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Usability testing omni-search functionality

Identifying usability issues (ease-of-use, speed, and success rates) with an omni-search input field in a machine learning platform for monitoring financial crime.


Heuristic evaluation of a funding search tool

Applying 10 usability heuristics to the new design of the backend of a university funding database, including recommendations for resolving potential usability issues.

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Usability testing an offline mobile payment prototype

A cognitive walkthrough, onsite usability test, and satisfaction survey for an offline mobile payment system in Nairobi, Kenya.


Informing UI changes to a data exploration tool

Assessing a data exploration tool with a cognitive walkthrough and a working session with target users to inform changes that would improve its usability.

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