Interface design guidelines encourage designers to provide high-performance mechanisms
for expert users. However, research shows that many expert interface components are …

The potential for using stroke gestures to enter, retrieve and select commands and text has
been recently unleashed by the popularity of touchscreen devices. This monograph …

We studied the memorability of free-form gesture sets for invoking actions. We compared
three types of gesture sets: user-defined gesture sets, gesture sets designed by the authors …

This paper presents Flower menu, a new type of Marking menu that does not only support
straight, but also curved gestures for any of the 8 usual orientations. Flower menus make it …

An important problem for HCI researchers is to estimate the parameter values of a cognitive
model from behavioral data. This is a difficult problem, because of the substantial complexity …

Spatial memory is an important facet of human cognition–it allows users to learn the
locations of items over time and retrieve them with little effort. In human-computer interfaces …

Interface guidelines encourage designers to include shortcut mechanisms that enable high
levels of expert performance, but prior research has demonstrated that few users switch to …

The investment of effort into personal communication can be highly meaningful to people,
and has particular significance for the mediation of close relationships. This paper presents …

Gesture-based interfaces are becoming more prevalent and complex, requiring non-trivial
learning of gesture sets. Many methods for learning gestures have been proposed, but they …

It is still unknown whether the very application of gaze for interaction has effects on cognitive
strategies users employ and how these effects materialize. We conducted a between-subject …