Design guidelines for web readability

Reading is fundamental to interactive-system use, but around 800 million of people might struggle with it due to literacy difficulties. Few websites are designed for high readability, as readability remains an underinvestigated facet of User Experience. Existing readability guidelines have multiple issues: they are too many or too generic, poorly worded, and often lack cognitive grounding. This paper developed a set of 61 readability guidelines in a series of workshops with design and dyslexia experts. A user study with dyslexic and average readers further narrowed the 61-guideline set down to a core set of 12 guidelines - an acceptably small set to keep in mind while designing. The core-set guidelines address reformatting - such as using larger fonts and narrower content columns, or avoiding underlining and italics - and may well aply to the interactive system other than websites. © 2017 Copyright is held by the owner/author(s)

Visual impressions of mobile app interfaces

First impressions are formed very fast but they last. Consecutive approach-avoidance behavior is formed almost instantly and persists over time. The effect of the first impression of graphical user interfaces (GUIs) of desktop webpages on subsequent evaluation is well documented in the literature. Less research has focused on mobile interfaces. To cover this gap, this paper reports two studies. The first study confirmed the persistence of first impressions on mobile interfaces evaluation, although it suggested that exposure time may be longer. The second study extends previous work on automatic evaluation from desktop to mobile interfaces. The linking theme between the studies is that of visual complexity, which is a more objective, yet powerful, predictor of aesthetic evaluation. Using six automatic metrics (color depth, dominant colors, visual clutter, symmetry, figure-ground contrast and edge congestion), in study 2 we explained 40 of variation in subjective complexity scores and 36 of variation in aesthetics scores

Visual impressions of mobile app interfaces

First impressions are formed very fast but they last. Consecutive approach-avoidance behavior is formed almost instantly and persists over time. The effect of the first impression of graphical user interfaces (GUIs) of desktop webpages on subsequent evaluation is well documented in the literature. Less research has focused on mobile interfaces. To cover this gap, this paper reports two studies. The first study confirmed the persistence of first impressions on mobile interfaces evaluation, although it suggested that exposure time may be longer. The second study extends previous work on automatic evaluation from desktop to mobile interfaces. The linking theme between the studies is that of visual complexity, which is a more objective, yet powerful, predictor of aesthetic evaluation. Using six automatic metrics (color depth, dominant colors, visual clutter, symmetry, figure-ground contrast and edge congestion), in study 2 we explained 40 of variation in subjective complexity scores and 36 of variation in aesthetics scores.</p