An extended protocol for usability validation of medical devices: Research design and reference model

This paper proposes and demonstrates an extended protocol for usability validation testing of medical devices. A review of currently used methods for the usability evaluation of medical devices revealed two main shortcomings. Firstly, the lack of methods to closely trace the interaction sequences and derive performance measures. Secondly, a...

With how many users should you test a medical infusion pump? Sampling strategies for usability tests on high-risk systems

Usability testing is recognized as an effective means to improve the usability of medical devices and prevent harm for patients and users. Effectiveness of problem discovery in usability testing strongly depends on size and representativeness of the sample. We introduce the late control strategy, which is to continuously monitor effectiveness of...

Usability engineering for mobile maps

because interaction with these maps can be laborious the applications are often hard to use. Therefore, the usability of maps on mobile devices must be improved. In this paper we review the research that has been done to solve technical, environmental, and social challenges of mobile map use. We will discuss interaction, visualization, and...

Evaluating spoken dialogue systems according to de-facto standards: A case study

In the present paper, we investigate the validity and reliability of de-facto evaluation standards, defined for measuring or predicting the quality of the interaction with spoken dialogue systems. Two experiments have been carried out with a dialogue system for controlling domestic devices. During these experiments, subjective judgments of...

Usability trade-offs for adaptive user interfaces: Ease of use and learnability

An analysis of context-aware user interfaces shows that adaptation mechanisms have a cost-benefit trade-off for usability. Unpredictable autonomous interface adaptations can easily reduce a system's usability. To reduce this negative effect of adaptive behaviour, we have attempted to help users building adequate mental models of such systems. A...

Gebruiksgericht ontwerpen van Elektronische Patiënten Dossiers

Binnen het project ‘Gebruiksvriendelijkheid van Elektronische Patiënten Dossiers’ wordt met behulp van enkele voorbeelden een vereenvoudigde, algemene ontwerpaanpak beschreven voor het bereiken van gebruiksgemak en toegankelijkheid van informatie voor verschillende gebruikersgroepen binnen het EPD. Er zijn een aantal hoofdlijnen van voorwaarden...