Getting to the root causes of usability errors and accessibility problemsUser Vision

Perception–Cognition–Action (PCA) analysis is a method of uncovering the root causes of usability errors and accessibility challenges in systems. By understanding these underlying issues, designs can be enhanced in order to avoid hazardous situations and cater to a wide array of user needs.

The approach is particularly recommended for medical devices, and is described in the international standard IEC 62366 on the application of usability engineering to medical devices. But this powerful technique can go so much further than that. It can help us understand how to improve usability and accessibility for a wide range of products.

My article for the User Vision website describes how the Perception–Cognition–Action approach works, how it aligns with established accessibility best practice, and how we at User Vision have applied it to transform a complex medical system used by both patients and healthcare practitioners.

I will also be speaking about the technique at this week’s UX Edinburgh meetup, which is an accessibility special in recognition of Global Accessibility Awareness Day. If you are around on Thursday 16 May at 18:30, it would be great to see you there.

The term “responsive web design” has failedFrances Berriman

Those words (originally from a slide by Alex Russell) may seem rather provocative. But it is a fair reminder that design isn’t just about how it looks.

In this case, most people (including, at times, myself) have fallen foul of the trap described here. That of thinking that setting a few breakpoints for smaller screens is enough to be responsive.

It reminded me of Jakob Nielsen’s 2012 article in which he advocated building a complete separate mobile site. This was a controversial viewpoint at a time when responsive design was becoming seriously trendy.

But seven years on, can we truly say the mobile web is a great experience?

Security design: Stop trying to fix the user

On the tendency of security approaches to rely on somehow educating users on this complex problem.

I’ve read dozens of studies about how to get people to pay attention to security warnings. We can tweak their wording, highlight them in red, and jiggle them on the screen, but nothing works because users know the warnings are invariably meaningless. They don’t see “the certificate has expired; are you sure you want to go to this webpage?” They see, “I’m an annoying message preventing you from reading a webpage. Click here to get rid of me.”…

We must stop trying to fix the user to achieve security. We’ll never get there, and research toward those goals just obscures the real problems. Usable security does not mean “getting people to do what we want.” It means creating security that works, given (or despite) what people do.

The same could be said for usability of any kind — but it seems especially vital in this case.

Via Khürt Williams.

6 mistakes that prevent UX teams from having boardroom influence

A good list of don’ts when you’re trying to set up an effective user experience function.

In particular, the pitfalls of “cargo cult usability” could do with being more widely understood. But I also enjoyed this point about being too insular.

Newly formed UX teams have a tendency to quickly turn inwards and focus heavily on their own practices, tools and methods: heads down, working in a vacuum, doing great work that doesn’t actually influence anything. As a result, we hear frustrated stakeholders say things like: “I don’t involve the UX team because they always seem too busy”. We’ve even heard UX team members themselves complain that, “We’re so busy and so mired in the day-to-day that we don’t have time to work alongside the development team.”

This reminds me of the (hilarious but true) story of the Staffordshire UK bus company. In 1976 it was reported that the buses on the Hanley to Bagnall route were not stopping to pick up passengers. People complained that buses would drive right by long lines of waiting passengers. The complaints prompted Councillor Arthur Cholerton to make transport history by stating that if the buses stopped to pick up passengers it would disrupt the timetable!