To design accessible visuals, account for color contrast, don’t rely on color alone, make interactive elements easy to identify, provide useful alternative text for images, and test your visuals with real users.
The gestalt principles for visual perception make users see some graphical user interface design elements as parts of a whole, and others as being separate, and thus different.
In application design, prevent users from being overwhelmed by putting things in predictable places, using a clear visual hierarchy, and taking advantage of progressive disclosure.
Our recent survey of UXers shows that researchers report in a matrix style. Matrix offers benefits from both a central research team and product teams.