Hitting the Benchmark: Ensuring a Best‐in‐Class User Experience for SAP Fiori Tools (2021) Lafleur, C. (2021, September 16). Hitting the Benchmark: Ensuring a Best‐in‐Class User Experience for SAP Fiori Tools. SAP Blogs. https://blogs.sap.com/2021/09/16/hitting-the-benchmark-ensuring-a-best-in-class-user-experience-for-sap-fiori-tools/
In the fast‐paced and ever‐changing landscape of software development, SAP Fiori tools helps streamline and improve the efficiency of developing SAP Fiori applications. It provides developers with the right support at the right time in a user‐friendly manner. However, without regular benchmark usability testing, it can be difficult to know where the product stands and where to take it next.
Predicting Percieved Screen Clutter by Feature Congestion (2011)
Lafleur, C., & Rummel, B. (2011). Predicting Perceived Screen Clutter by Feature Congestion. Mensch & Computer 2011, 101–109. doi:10.1524/9783486712742.101 (Download)
Adding functionality to a computer user interface frequently results in adding more visual features to the screen. The question of when, exactly, a screen becomes too crowded is often answered arbitrarily, or via expensive usability testing. The present study investigates an algorithm presented by Rosenholtz et al. to calculate “Feature Congestion” as a measure of visual clutter on the screen, and whether or not it can accurately predict users’ experiencing a screen as being cluttered (2005, 2007a). Screenshots of websites which were equidistant in Feature Congestion were subject to a psychophysical paired comparison scaling experiment with 29 participants. Results from the experiment indicate that the Feature Congestion model can accurately predict perceptions of visual clutter on a computer user interface. Practical implications of the present findings are also discussed.
Subset Search for Icons of Different Spatial Frequencies (2009)
Rauschenberg, R.,Lin, J. J.-W., Zheng, S., & Lafleur, C., (2009). Subset Search for Icons of Different Spatial Frequencies 2009, 53(17). doi:10.1518/107118109X12524443345113 (Download)
In the present paper, we report two experiments out of series of studies designed to examine various aspects of visual search for icons of differing spatial frequencies. Specifically, the present experiments explore whether there exists a search asymmetry between high and low spatial frequency icons (A amongst B > B amongst A), and whether observers can limit their search to the relevant set of items in a display containing both types of icons. Our results show that a classic search asymmetry does not exist for spatial frequency; that, rather, both types of targets ‘pop out’; that search for a high spatial frequency target amongst high spatial frequency distractors is less efficient than search for a low spatial frequency target amongst low spatial frequency distractors; and that observers are partially able to limit their search to the relevant subset in mixed displays. Implications for the design of touch screen user interfaces are discussed.
Where’s the toolbar? An unmoderated online study on toolbar placement (2016, German Language)
Rummel, B. & Lafleur, C., (2016). Wohin mit der Toolbar? Eine unmoderierte Online‐Studie. In: Hess, S. & Fischer, H. (Hrsg.), UP 2016. Aachen: Gesellschaft für Informatik e.V. und die German UPA e.V. (Download)
Today, business software needs to run on a variety of different sizes of devices, with designs responsively adapting to a variety of different screen sizes; taking this into consideration, users have an expectation of consistency between the desktop and on mobile devices. Placing the toolbar at the bottom of the display is most common in mobile devices, but proves problematic for users on large screen monitors. In an unmoderated online study, we investigated three different variants of an application toolbar with regards to error rates, time efficiency, user preference, and, user satisfaction on a desktop monitor. The entry contains a discussion about the study design, results and overall experience with Userzoom.