In the safetyand time-critical context of pre-hospital medical care, usability is a major challenge that needs to be addressed, because interaction problems or errors may have serious consequences for patients as well as employees of Emergency Medical Services (EMS). In this regard, a user-centered human-computer interface is a crucial factor for efficient usage as well as user acceptance. Well...

Kommt intuitive Benutzbarkeit als übergeordnetes Usability-Ziel infrage? Wenn ja, unter welchen Bedingungen? Wie wird geprüft, ob das Ziel erreicht wurde? Nach einer Klärung des Konzepts wird die Frage bearbeitet, inwiefern sich intuitive Benutzbarkeit mit dem UsabilityQualitätsmodell der ISO 9241-Serie vereinbaren lässt. Abschließend werden Implikationen der vorgestellten Überlegungen für den ...

The original conceptualization of usability was ease of use, this was later expanded into a multi-dimensional construct in ISO standards and usability literature. Such an expansion is seen as an improvement, since cross-study comparison or benchmarking cannot objectively be done without a common set of usability components being defined. The current issue lies in how these components are operat...

This paper makes seven recommendations to HCI researchers wishing to construct Fitts’ law models for either movement time prediction, or for the comparison of conditions in an experiment. These seven recommendations support (and in some cases supplement) the methods described in the recent ISO 9241-9 standard on the evaluation of pointing devices. In addition to improving the robustness of Fitt...

In den letzten Jahren ist der Funktionsumfang von Softwareanwendungen immer stärker angestiegen. Solche hochfunktionellen Anwendungen (HFA) sind sehr komplex geworden, weil sie die Bedürfnisse großer und heterogener Gruppen von Benutzern mit unterschiedlichem Kenntnisstand, unterschiedlicher Erfahrung und auch für verschiedene Aufgabenbereiche zufrieden stellen müssen (Fischer 2001). Trotzdem s...

The ISO 9241 Part 9 standard [2] pointing task is used to evaluate passive haptic feedback in target selection in a virtual environment (VE). Participants performed a tapping task using a tracked stylus in a CAVE both with, and without passive haptic feedback provided by a plastic panel co-located with the targets. Pointing throughput (but not speed nor accuracy alone) was significantly higher ...

There is an increasing demand for software that matches real user needs in a working environment. The paper describes the new framework for software product quality developed for ISO/IEC 9126-1: internal quality (static properties of the code), external quality (behaviour of the software when it is executed) and quality in use (the extent to which the software meets the needs of the user). Qual...