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COVID update:
TorCHI is moving our events online.

April 7, 2020 

Perceived usability: Usefulness and measurement of this construct

In addition to efficiency and effectiveness, perceived usability is an important component of the classical conception of usability. However, there have been recent criticisms of the usefulness of perceived usability. This talk will survey this literature.

Over many years, several scales have been developed to measure perceived usability or similar concepts, including SUS, UMUX-LITE, TAM, and NPS. This talk will review leading scales, with an in-depth focus on practical guidance on UMUX-LITE.

PRESENTER: James R. (Jim) Lewis is Distinguished User Experience Researcher at He has published influential papers on the topic of this talk, the assessment of perceived usability, and written books on the the broader topic of quantitative user research, including Quantifying the User Experience (with Jeff Sauro).  As well, Jim has had a long and broad career designing and evaluating user interfaces (graphical, spoken, mobile), including the first smart phone, the Simon. He holds a master's degree in human factors psychology and PhD in psycholinguistics. 

WHEN: Tuesday, April 7th, 2020,   7:00 PM - 8:30 PM

WHERE: Online web meeting. Details provided to registrants.

      Register      FREE online Zoom Event 

Join TorCHI    Membership $20/year

Past Events

From Postcards to Virtual Reality
and Back

Bill Buxton, Microsoft 

April 12, 2018

Bill Buxton-Postcards to VR and Back

Does AI Mean Data Visualization is Dead 

Jamie Waese, Anne Stevens, Afrooz Samaei, IBM 

January 29, 2020 

AI & Info Viz Talk IBM Cognos Team


World Usability Day 2019: Designing Worlds We Can Live In: Inclusive Design in Practice

  Cheryl Li & Colin Clark, OCADU, IDRC 

November 14, 2019


About TorCHI

TorCHI is a professional association of people in the Toronto UX community.

Our diverse membership includes people with backgrounds in Human-Computer Interaction (HCI), Engineering, User Experience (UX), User Experience Research (UXR), Information Architecture (IA), Design Thinking, Usability, and Design among others. As well, our members include professionals, academics, and students.

TorCHI was founded in 1990  as the local chapter of ACM's SIGHI, the Special Interest Group on Computer-Human Interaction.

We offer ways to learn, share and network.

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