How Physical Presence Overrides Emotional (Coping) Effects in HRI: Testing the Transfer of Emotions and Emotional Coping in Interaction with a Humanoid Social Robot

The increasing pressure on healthcare systems calls for innovative solutions, such as social robots. However, healthcare situations often are highly emotional while little is known about how people’s prior emotional state may affect the perception and acceptance of such robots. Following appraisal theories of emotion, the appraisal of coping potential related to one’s emotions was found to be important in acting as mediator between emotional state and perceptions of a robot (Spekman et al. in Comput Hum Behav 85:308–318, 2018. 10.1016/j.chb.2018.03.043; in Belief in emotional coping ability affects what you see in a robot, not the emotions as such, Dissertation, Vrije Universiteit Amsterdam, Amsterdam, 2018), though this has not yet been tested in relation to actual emotional coping nor in an actual encounter with a robot. Hence, the current study focused on how actual emotional coping influences subsequent robot perceptions in two experiments. In Study 1 (N = 101) and Study 2 (N = 110) participants encountered a real humanoid robot after a manipulation to induce various emotions and coping potential. Manipulations in both studies were effective, yet the results in Study 1 were potentially confounded by a novelty effect of participants’ first encounter with a real robot that talked to them. Therefore, in Study 2, participants interacted briefly with the robot before the actual experiment. Results showed an interaction effect of prior emotions and (manipulated) coping potential on robot perceptions, but not the effects expected based on previous studies. An actual interaction with a robot thus seems to provoke different reactions to the robot, thereby overruling any emotional effects. These findings are discussed in light of the healthcare context in which these social robots might be deployed.

Sadness, but not all negative emotions, heightens addictive substance use

Do negative feelings in general trigger addictive behavior, or do specific emotions play a stronger role? Testing these alternative accounts of emotion and decision making, we drew on the Appraisal Tendency Framework to predict that sadness, specifically, rather than negative mood, generally, would 1) increase craving, impatience, and actual addictive substance use and 2) do so through mechanisms selectively heightened by sadness. Using a nationally representative, longitudinal survey, study 1 (n = 10,685) revealed that sadness, but not other negative emotions (i.e., fear, anger, shame), reliably predicted current smoking as well as relapsing 20 years later. Study 2 (n = 425) used an experimental design, and found further support for emotion specificity: Sadness, but not disgust, increased self-reported craving relative to a neutral state. Studies 3 and 4 (n = 918) introduced choice behavior as outcome variables, revealing that sadness causally increased impatience for cigarette puffs. Moreover, study 4 revealed that the effect of sadness on impatience was more fully explained by concomitant appraisals of self-focus, which are specific to sadness, than by concomitant appraisals of negative valence, which are general to all negative emotions. Importantly, study 4 also examined the topography of actual smoking behavior, finding that experimentally induced sadness (as compared to neutral emotion) causally increased the volume and duration of cigarette puffs inhaled. Together, the present studies provide support for a more nuanced model regarding the effects of emotion on tobacco use, in particular, as well as on addictive behavior, in general.

Does it matter if we approach or withdraw when reading? A comparison of fear-related words and anger-related words

The main aim of the present research was to explore the role of affective features beyond valence and arousal (i.e., the approach-withdrawal dimension) in visual word processing. For this purpose, fear-related words and anger-related words were compared in three tasks: a lexical decision task (LDT), a valence decision task (VDT) and an approach-distancing decision task (ADDT). Although these two types of words did not differ in the first two tasks, faster 'distancing' responses were given to anger-related words than to fear-related words in the ADDT. As long as these two types of words were matched in valence and arousal (among other variables), these results illustrate the need to consider other emotional dimensions (in this case, the approach-withdrawal dimension) beyond the two-dimensional perspective in order to account for the emotional effects in visual words processing and to describe how the affective space is organized. In addition, the results suggest a task-dependence effect: differential effects of fear and anger only emerged when participants were explicitly focused on the approach-withdrawal dimension. These findings are discussed in relation to motivationally-based mechanisms.

Effects of the Activation of Affective Information on Stereotyping: When Sadness Increases Stereotype Use

Two studies explored the impact of mere activation of affective information on the use of stereotypes in social judgment. These studies provided consistent results showing that the activation of information related to sadness increases reliance on stereotypes, whereas the activation of information related to happiness decreases it. These results were obtained in the absence of affective state changes among the participants and with the use of two different priming procedures (Study 1: scrambled sentences, Study 2: subliminal priming) and two different judgment tasks (Study 1: impression formation, Study 2: guilt judgment). Complementing the informational view of affective states, it is suggested that affective information of which people are not conscious activates behavioral tendencies of approach or of avoidance associated with the related emotion.

Facial mimicry in its social setting

In interpersonal encounters, individuals often exhibit changes in their own facial expressions in response to emotional expressions of another person. Such changes are often called facial mimicry. While this tendency first appeared to be an automatic tendency of the perceiver to show the same emotional expression as the sender, evidence is now accumulating that situation, person, and relationship jointly determine whether and for which emotions such congruent facial behavior is shown. We review the evidence regarding the moderating influence of such factors on facial mimicry with a focus on understanding the meaning of facial responses to emotional expressions in a particular constellation. From this, we derive recommendations for a research agenda with a stronger focus on the most common forms of encounters, actual interactions with known others, and on assessing potential mediators of facial mimicry. We conclude that facial mimicry is modulated by many factors: attention deployment and sensitivity, detection of valence, emotional feelings, and social motivations. We posit that these are the more proximal causes of changes in facial mimicry due to changes in its social setting.

Automatic contrast: Evidence that automatic comparison with the social self affects evaluative responses

The aim of the present research was to investigate whether unconsciously presented affective information may cause opposite evaluative responses depending on what social category the information originates from. We argue that automatic comparison processes between the self and the unconscious affective information produce this evaluative contrast effect. Consistent with research on automatic behaviour, we propose that when an intergroup context is activated, an automatic comparison to the social self may determine the automatic evaluative responses, at least for highly visible categories (e.g. sex, ethnicity). Contrary to previous research on evaluative priming, we predict automatic contrastive responses to affective information originating from an outgroup category such that the evaluative response to neutral targets is opposite to the valence of the suboptimal primes. Two studies using different intergroup contexts provide support for our hypotheses.

Judgment under emotional certainty and uncertainty: the effects of specific emotions on information processing

The authors argued that emotions characterized by certainty appraisals promote heuristic processing, whereas emotions characterized by uncertainty appraisals result in systematic processing. The 1st experiment demonstrated that the certainty associated with an emotion affects the certainty experienced in subsequent situations. The next 3 experiments investigated effects on processing of emotions associated with certainty and uncertainty. Compared with emotions associated with uncertainty, emotions associated with certainty resulted in greater reliance on the expertise of a source of a persuasive message in Experiment 2, more stereotyping in Experiment 3, and less attention to argument quality in Experiment 4. In contrast to previous theories linking valence and processing, these findings suggest that the certainty appraisal content of emotions is also important in determining whether people engage in systematic or heuristic processing.

Emotion, regulation, and moral development

Research and theory on the role of emotion and regulation in morality have received considerable attention in the last decade. Much relevant work has concerned the role of moral emotions in moral behavior. Research on differences between embarrassment, guilt, and shame and their relations to moral behavior is reviewed, as is research on the association of these emotions with negative emotionality and regulation. Recent issues concerning the role of such empathy-related responses as sympathy and personal distress to prosocial and antisocial behavior are discussed, as is the relation of empathy-related responding to situational and dispositional emotionality and regulation. The development and socialization of guilt, shame, and empathy also are discussed briefly. In addition, the role of nonmoral emotions (e.g. anger and sadness), including moods and dispositional differences in negative emotionality and its regulation, in morally relevant behavior, is reviewed.