A comparison between laboratory and wearable sensors in the context of physiological synchrony

Measuring concurrent changes in autonomic physiological responses aggregated across individuals (Physiological Synchrony - PS) can provide insight into group-level cognitive or emotional processes. Utilizing cheap and easy-to-use wearable sensors to measure physiology rather than their high-end laboratory counterparts is desirable. Since it is...

An Accessible Tool to Measure Implicit Approach-Avoidance Tendencies Towards Food Outside the Lab

Implicit approach-avoidance tendencies can be measured by the approach-avoidance task (AAT). The emergence of mobile variants of the AAT enable its use for both in-the-lab and in-the-field experiments. Within the food domain, use of the AAT is concentrated in research on eating disorders or healthy eating and is seldom used as an implicit...

On conversational agents with mental states

Embodied conversational agents (ECAs) have been put forward as a promising means for the training of social skills. The traditional approach to drive the behaviour of ECAs during human-agent dialogues is to use conversation trees. Although this approach is easy to use and very transparent, an important limitation of conversation trees is that...

An ontology-based question system for a virtual coach assisting in trauma recollection

Internet-based guided self-therapy systems provide a novel method for Post-Traumatic Stress Disorder patients to follow therapy at home with the assistance of a virtual coach. One of the main challenges for such a coach is assisting patients with recollecting their traumatic memories, a vital part of therapy. In this paper, an ontology-based...

Design and implementation of home-based virtual reality exposure therapy system with a virtual eCoach

Current developments of virtual reality exposure therapy (VRET) system focus mainly on systems that can be used in health clinics under the direct supervision of a therapist. Offering patients however the possibility to do this treatment at home would make VRET more accessible. In this paper we therefore present a home-based VRET system for the...

An operational and denotational approach to non-context-freeness

The main result of this paper is a description of linguistically motivated non-context-free phenomena equivalently in terms of regular tree languages (to express the recursive properties) and both a logical and an operational perspective (to establish the intended linguistic relations). The result is exemplified with a particular non-context...