A demonstration is presented of how automated reasoning tools can be used to check the
predictability of a user interface. Predictability concerns the ability of a user to determine the …

Differential formal analysis is a new user interface analytic evaluation method based on
stochastic user simulation. The method is particularly valuable for evaluating safety critical user …

We define the predictability of a user interface as the property that an idealised user can
predict with sufficient certainty the effect of any action in a given state in a system, where state …

User interfaces that employ the same display and buttons may look the same but can work
very differently depending on how they are implemented. In healthcare, it is critical that …

User interfaces that employ the same display and buttons may look the same but can work
very differently depending on exactly how they are implemented. In healthcare, it is critical …

Number entry systems on medical devices are safety critical and it is important to get them
right. Interaction design teams can be multidisciplinary, and in this work we present a process …

The design of medical devices directly affects the way healthcare practitioners carry out their
daily tasks. Users welcome design that takes into account the clinical environment, in which …

Empirical methods and analytic methods have been used independently to analyse and
improve number entry system designs. This paper identifies key differences in exploring number …

Differential Formal Analysis (DFA) is an evaluation method based on stochastic simulation
for evaluating safety critical user interfaces with subtle programming differences. This method …

We report on a case study investigating current practice in the use of a programmable infusion
pump. We start by formalising an existing description of the procedure followed by nurses …