Alle Publikationen
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2016
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(2016): Promoting Interactions Between Humans and Robots Using Robotic Emotional Behavior. In: IEEE Trans Cybern 46 (12), S. 2911-2923. DOI: 10.1109/TCYB.2015.2492999
DOI: https://doi.org/10.1109/TCYB.2015.2492999 Abstract: The objective of a socially assistive robot is to create a close and effective interaction with a human user for the purpose of giving assistance. In particular, the social interaction, guidance, and support that a socially assistive robot can provide a person can be very beneficial to patient-centered care. However, there are a number of research issues that need to be addressed in order to design such robots. This paper focuses on developing effective emotion-based assistive behavior for a socially assistive robot intended for natural human-robot interaction (HRI) scenarios with explicit social and assistive task functionalities. In particular, in this paper, a unique emotional behavior module is presented and implemented in a learning-based control architecture for assistive HRI. The module is utilized to determine the appropriate emotions of the robot to display, as motivated by the well-being of the person, during assistive task-driven interactions in order to elicit suitable actions from users to accomplish a given person-centered assistive task. A novel online updating technique is used in order to allow the emotional model to adapt to new people and scenarios. Experiments presented show the effectiveness of utilizing robotic emotional assistive behavior during HRI scenarios.
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(2016): Anticipating Human Activities Using Object Affordances for Reactive Robotic Response. In: IEEE transactions on pattern analysis and machine intelligence 38 (1), S. 14-29. DOI: 10.1109/TPAMI.2015.2430335
DOI: http://www.ncbi.nlm.nih.gov/pubmed/26656575 Abstract: An important aspect of human perception is anticipation, which we use extensively in our day-to-day activities when interacting with other humans as well as with our surroundings. Anticipating which activities will a human do next (and how) can enable an assistive robot to plan ahead for reactive responses. Furthermore, anticipation can even improve the detection accuracy of past activities. The challenge, however, is two-fold: We need to capture the rich context for modeling the activities and object affordances, and we need to anticipate the distribution over a large space of future human activities. In this work, we represent each possible future using an anticipatory temporal conditional random field (ATCRF) that models the rich spatial-temporal relations through object affordances. We then consider each ATCRF as a particle and represent the distribution over the potential futures using a set of particles. In extensive evaluation on CAD-120 human activity RGB-D dataset, we first show that anticipation improves the state-of-the-art detection results. We then show that for new subjects (not seen in the training set), we obtain an activity anticipation accuracy (defined as whether one of top three predictions actually happened) of 84.1, 74.4 and 62.2 percent for an anticipation time of 1, 3 and 10 seconds respectively. Finally, we also show a robot using our algorithm for performing a few reactive responses.
Keywords: Affordance, affordances, Affordanz, Algorithms, Aniticipation, Human Activities, Humans, Imaging, Intentionserkennung (Roboter erkennt Menschenintention), J. J. Gibson's theory of affordance, machine learning, MODELS, Movement, PERCEPTION, Psychological, Robotics, Soziosensitive Systeme, Soziosensitivität, Statistical, Three-Dimensional, Video Recording 2014
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(2014): Aging and social perception. So far, more similarities than differences. In: Psychology and Aging 29 (3), S. 451-453. DOI: 10.1037/a0037555
DOI: http://www.ncbi.nlm.nih.gov/pubmed/25244466 Abstract: Despite the pervasiveness of social perception in everyday life, relatively little is known about how the way we see ourselves and other people changes with age. The central questions to consider are if and how the perceiver's age and the perceived person's age affect fundamental processes of social perception. The current collection of 9 articles addresses both questions. Taking Brunswik's lens model of social perception as an overarching theoretical framework, this introduction concludes on the basis of these 9 articles that age as a characteristic of the perceiver does not appear to have a strong effect on social judgments. In contrast, the age of the perceived person or group seems to affect the perceiver's social inferences, interpretation of facial stimuli, or expectations of gains and losses in various domains of functioning. Thus, the articles presented here suggest that, although age is an important social category when perceiving another person, processes of social perception demonstrate more similarities than differences between age groups.
Keywords: Aging, Alter, Gerontologie, Humans, Judgment, MODELS, Psychological, PSYCHOLOGY, Social Perception, Sozialpsychologie 2013
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(2013): Being and feeling in sync with an adaptive virtual partner. Brain mechanisms underlying dynamic cooperativity. In: Cerebral cortex (New York, N.Y. : 1991) 23 (11), S. 2592-2600. DOI: 10.1093/cercor/bhs243
DOI: http://www.ncbi.nlm.nih.gov/pubmed/22892422 Abstract: Cooperation is intrinsic to the human ability to work together toward common goals, and depends on sensing and reacting to dynamically changing relationships between coacting partners. Using functional magnetic resonance imaging (fMRI) and a paradigm in which an adaptive pacing signal simulates a virtual partner, we examined the neural substrates underlying dynamic joint action. A single parameter controlled the degree to which the virtual partner adapted its behavior in relation to participant taps, thus simulating varying degrees of cooperativity. Analyses of fMRI data using objective and subjective measures of synchronization quality found the relative balance of activity in two distinct neural networks to depend on the degree of the virtual partner's adaptivity. At lower degrees of adaptivity, when the virtual partner was easier to synchronize with, cortical midline structures were activated in conjunction with premotor areas, suggesting a link between the action and socio-affective components of cooperation. By contrast, right lateral prefrontal areas associated with central executive control processes were recruited during more cognitively challenging interactions while synchronizing with an overly adaptive virtual partner. Together, the reduced adaptive sensorimotor synchronization paradigm and pattern of results illuminate neural mechanisms that may underlie the socio-emotional consequences of different degrees of entrainment success.
Keywords: Acoustic Stimulation, adaptation, Adult, Anpassung, BRAIN, Brain Mapping, Cooperative Behavior, Emotions, Female, Gehirnfunktion, Humans, Kognitionswissenschaft/Social Sciences/Humanities, Kognitive Skills/Social Cognition, Kooperation, Magnetic Resonance Imaging, Male, Photic Stimulation, physiology, Psychological, Sensory Feedback, User-Computer Interface, Young Adult 2010
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(2010): Incorporating the cultural value of respeto into a framework of Latino parenting. In: Cultural Diversity and Ethnic Minority Psychology 16 (1), S. 77-86
Abstract: Latino families face multiple stressors associated with adjusting to United States mainstream culture that, along with poverty and residence in inner-city communities, may further predispose their children to risk for negative developmental outcomes. Evidence-based mental health treatments may require culturally informed modifications to best address the unique needs of the Latino population, yet few empirical studies have assessed these cultural elements. The current study examined cultural values of 48 Dominican and Mexican mothers of preschoolers through focus groups in which they described their core values as related to their parenting role. Results showed that respeto, family and religion were the most important values that mothers sought to transmit to their children. Respeto is manifested in several domains, including obedience to authority, deference, decorum, and public behavior. The authors describe the socialization messages that Latina mothers use to teach their children respeto and present a culturally derived framework of how these messages may relate to child development. The authors discuss how findings may inform the cultural adaptation of evidence-based mental health treatments such as parent training programs. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
Keywords: Acculturation, Adult, Child, Child development, Childhood Development, Cultural Characteristics, cultural values, decorum, Dominican Republic, Einzelstudie / spezifisch, Ethnic Values, Female, Gesundheit, Hispanic Americans, Humans, Intergenerational Relations, Kulturforschung/ kulturelle Unterschiede, Latinas, Latino parenting, Latinos, Mexican Americans, MODELS, Parent Child Relations, Parenting, Preschool, preschoolers, Psychological, respect, respeto, Social Values, Socialization, United States, VALUES -
(2010): A conceptual and computational model of moral decision making in human and artificial agents. In: Topics in cognitive science 2 (3), S. 454-485. DOI: 10.1111/j.1756-8765.2010.01095.x
DOI: https://doi.org/10.1111/j.1756-8765.2010.01095.x Abstract: Recently, there has been a resurgence of interest in general, comprehensive models of human cognition. Such models aim to explain higher‐order cognitive faculties, such as deliberation and planning. Given a computational representation, the validity of these models can be tested in computer simulations such as software agents or embodied robots. The push to implement computational models of this kind has created the field of artificial general intelligence (AGI). Moral decision making is arguably one of the most challenging tasks for computational approaches to higher‐order cognition. The need for increasingly autonomous artificial agents to factor moral considerations into their choices and actions has given rise to another new field of inquiry variously known as Machine Morality, Machine Ethics, Roboethics, or Friendly AI. In this study, we discuss how LIDA, an AGI model of human cognition, can be adapted to model both affective and rational features of moral decision making. Using the LIDA model, we will demonstrate how moral decisions can be made in many domains using the same mechanisms that enable general decision making. Comprehensive models of human cognition typically aim for compatibility with recent research in the cognitive and neural sciences. Global workspace theory, proposed by the neuropsychologist Bernard Baars (1988), is a highly regarded model of human cognition that is currently being computationally instantiated in several software implementations. LIDA (Franklin, Baars, Ramamurthy, & Ventura, 2005) is one such computational implementation. LIDA is both a set of computational tools and an underlying model of human cognition, which provides mechanisms that are capable of explaining how an agent’s selection of its next action arises from bottom‐up collection of sensory data and top‐down processes for making sense of its current situation. We will describe how the LIDA model helps integrate emotions into the human decision‐making process, and we will elucidate a process whereby an agent can work through an ethical problem to reach a solution that takes account of ethically relevant factors. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
Keywords: artificial general intelligence, Artificial intelligence, Cognition, computational model, Computational modeling, Computer Simulation, conceptual model, Decision Making, global workspace theory, Humans, intelligent agents, machine ethics, Machine morality, MODELS, Moral & Ethik, moral decision making, Morality, Morals, Psychological 2008
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(2008): Sexual coercion and the misperception of sexual intent. In: Clinical psychology review 28 (1), S. 48-66. DOI: 10.1016/j.cpr.2007.03.002
DOI: http://www.ncbi.nlm.nih.gov/pubmed/17462798 Abstract: Misperceiving a woman's platonic interest as sexual interest has been implicated in a sexual bargaining process that leads to sexual coercion. This paper provides a comprehensive review of sexual misperception, including gender differences in perception of women's sexual intent, the relationship between sexual coercion and misperception, and situational factors that increase the risk that sexual misperception will occur. Compared to women, men consistently perceive a greater degree of sexual intent in women's behavior. However, there is evidence to suggest that this gender effect may be driven largely by a sub-group of men who are particularly prone to perceive sexual intent in women's behavior, such as sexually coercive men and men who endorse sex-role stereotypes. Situational factors, such as alcohol use by the man or woman, provocative clothing, and dating behaviors (e.g., initiating the date or making eye contact), are all associated with increased estimates of women's sexual interest. We also critique the current measurement strategies and introduce a model of perception that more closely maps on to important theoretical questions in this area. A clearer understanding of sexual perception errors and the etiology of these errors may serve to guide sexual-assault prevention programs toward more effective strategies.
Keywords: Alcohol Drinking, Biologische Marker, Coercion, Control, degree of acquaintance, eye-contact, Female, Gender Identity, Gestik, Humans, Individuality, Intention, Interpersonal Relations, Male, Mimik, MODELS, Numerical Data, Perceptual Distortion, Postkasten, Prevention, Psychological, Psychologie, PSYCHOLOGY, Rape, Sex Factors, Sexual Behaviour, Social Perception, Statistics, Status, SV 2007
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(2007): Language as context for the perception of emotion. In: Trends in cognitive sciences 11 (8), S. 327-332. DOI: 10.1016/j.tics.2007.06.003
DOI: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2225544 Abstract: In the blink of an eye, people can easily see emotion in another person's face. This fact leads many to assume that emotion perception is given and proceeds independently of conceptual processes such as language. In this paper we suggest otherwise and offer the hypothesis that language functions as a context in emotion perception. We review a variety of evidence consistent with the language-as-context view and then discuss how a linguistically relative approach to emotion perception allows for intriguing and generative questions about the extent to which language shapes the sensory processing involved in seeing emotion in another person's face.
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