Joost Broekens

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Emotions are an important aspect of life. Persons have emotions while using products and technology. It is becoming more and more important to be able to assess these emotions for multiple reasons: (a) to develop better products, (b) to better understand how the user interacts with products, and (c) because the affective state of the user is of importance(More)
Mood contagion is an automatic mechanism that induces a congruent mood state by means of the observation of another person's emotional expression. In this paper, we address the question whether robot mood displayed during an imitation game can (a) be recognized by participants and (b) produce contagion effects. Robot mood was displayed by applying a generic(More)
Affective computing has proven to be a viable field of research comprised of a large number of multidisciplinary researchers resulting in work that is widely published. The majority of this work consists of computational models of emotion recognition, computational modeling of causal factors of emotion and emotion expression through rendered and robotic(More)
Negotiation support systems (NSS) can enhance humans’ performance in negotiations. Much research in this area focuses on finding optimal bids. However, there is little research on human factors in technological negotiation support. We believe an in-depth analysis of the task involving experts and users is needed to build a new generation of NSS focusing on(More)
There is a lot of evidence for the phenomenon describing the spread of emotion from one person to another, called emotional contagion. Although there is a large body of research on this topic, research containing evidence for factors that moderate the process of emotional contagion, is limited and inconclusive. Furthermore most of these studies are done in(More)
Two problems may arise when an intelligent (recommender) system elicits users’ preferences. First, there may be a mismatch between the quantitative preference representations in most preference models and the users’ mental preference models. Giving exact numbers, e.g., such as “I like 30 days of vacation 2.5 times better than 28 days” is difficult for(More)
Computer models can be used to investigate the role of emotion in learning. Here we present EARL, our framework for the systematic study of the relation between emotion, adaptation and reinforcement learning (RL). EARL enables the study of, among other things, communicated affect as reinforcement to the robot; the focus of this chapter. In humans, emotions(More)
Cognitive appraisal theories (CATs) explain human emotions as a result of the subjective evaluation of events that occur in the environment. Recently, arguments have been put forward that discuss the need for formal descriptions in order to further advance the field of cognitive appraisal theory. Formal descriptions can provide detailed predictions and help(More)
It is well known that our emotional response is related to our bodily state, and more specifically that our bodily state can directly influence particular emotions we feel. It appears, however, that this fact has so far not had a significant influence in the entertainment industry. We first review existing work on physical emotion induction. Based on this(More)