Measuring the duration of perception

An analysis is presented of ways in which the total duration of perception of transient visual stimuli may be determined by means of psychophysical judgments of the simultaneity (or relative precedence) of two sensory events. This analysis yields a new method for measuring the duration of perception that only requires judgments of the simultaneity of the offset of one visual target with the onset of another (“offset-onset” judgments), and is thus free of differential biases between onset-onset and offset-onset judgments of simultaneity which could be involved in previous measurements. When three or more perceived durations need to be determined, the new method is more efficient than earlier methods; it requires measurement of only one PSE in order to evaluate one response duration as compared to two PSEs per response duration for previous methods. We also describe ways of determining the presence of some kinds of biases and quantitatively evaluating the magnitude of bias in the new method, as well as bias in onset-onset or offset-offset judgments of simultaneity alone; such evaluations of differential bias were not possible for the earlier methods. An experimental example of a bias analysis is described. No significant biasing effects were detected in the measures of perceived duration that were extracted as either retinal location or background luminance was changed, although background luminance itself markedly influenced the values of perceived duration.     

Top-down influences in social perception

The present chapter makes a case for the importance of the study of social perception as a phenomenon separate from impression formation and social categorisation, and of great significance for social psychology. We claim specifically that the development of tasks for studying perception is critical for addressing the question of whether top-down processes influence perception. Three series of studies conducted by the authors, and which relied on newly developed tasks, are presented. The first two series examine the effects of emotion and adult attachment orientation on the perception of facial expression of emotion. The third examines the influences of emotion concepts on perceptual memory for facial expression. The studies together provide good support for influences of emotional state, personality factors, and prior knowledge on the perception of facial expression of emotion, and call, we hope, for greater attention to perceptual processes in social psychology.     

Emotional intelligence and social perception

One of the key facets of emotional intelligence (EI) is the capacity of an individual to recognise emotions in others. However, this has not been tested cross-culturally, despite the body of research indicating that people are better at recognising facial affect of members of their own culture. Given the emotion recognition aspect of EI, it would seem that EI should be related to correctly identifying emotion in others regardless of race. In order to test this, a social perception inspection time task was carried out in which participants (41 Caucasian and 46 Far-East Asian) were required to identify the emotion on Caucasian and Far-East Asian faces that were happy, sad, or angry. Results from this study indicate that EI was not related to correctly identifying facial expressions. The results did confirm that participants are better able to recognise people of their own ethnicity, though this was only applicable to negative emotions.     

Psychiatric labeling and social perception

The present study explores the effects of three types of psychiatric labeling on attribution of causality and impression formation. It was found that observers tended to be more person-oriented in their attributions when explaining an accident of a person being labeled formerly mentally ill and formerly psychiatrically hospitalized, as compared to a non-psychiatric control label. However, no such tendency towards person-orientation in causal attribution was found for a problems-of-living label. These effects were found to be independent of variation in amount of neutral context information about the person being labeled. The effect of labeling on impression formation was found to be inconclusive, and reasons for this are discussed. Context information was found to affect impression formation in that the person was evaluated more positively. No sex differences in attribution of causality and impression formation was found.     

Behavioral confirmation in social interaction: From social perception to social reality

A perceiver's actions, although based upon initially erroneous beliefs about a target individual may channel social interaction in ways that cause the behavior of the target to confirm the perceiver's beliefs. To chart this process of behavioral confirmation, we observed successive interactions between one target and two perceivers. In the first interaction, targets who interacted with perceivers who anticipated hostile partners displayed greater behavioral hostility than targets whose perceivers expected nonhostile partners. Only when targets regarded their actions as reflections of personal dispositions did these behavioral differences in hostility persevere into their subsequent interactions with naive perceivers who had no prior knowledge about them. Theoretical implications of the behavioral confirmation construct for social perception processes are discussed.     

Education biases perception of social robots

IntroductionRecent research on human–robot interactions (HRI) emphasizes a role of user's attitudes in perceiving robot's with different robot embodiments of varying levels of human likenesses. However, other human factors such as educational background may also help understanding of what conditions contribute to enhance social perception of robot's features.ObjectivesThis study aimed to determine how people's attitudes towards and familiarization with robots influence social perception of particular features of robots.MethodFirst, we measured attitudes towards robots among undergraduate students with diverse educational background (engineering vs. psychology). Then, participants were presented with short movies showing the behaviour of three robots with different levels of sociability. Finally, participants evaluated the characteristics of these robots on a scale.ResultsPeople more familiar with social robots and with more positive attitudes towards them evaluate robots with human traits more highly.ConclusionHuman perception of social robots resembles social phenomena related to human perception of other people.     

Encapsulated social perception of emotional expressions

In this paper I argue that the detection of emotional expressions is, in its early stages, informationally encapsulated. I clarify and defend such a view via the appeal to data from social perception on the visual processing of faces, bodies, facial and bodily expressions. Encapsulated social perception might exist alongside processes that are cognitively penetrated, and that have to do with recognition and categorization, and play a central evolutionary function in preparing early and rapid responses to the emotional stimuli.     

The perception of preschool social dominance

Children's and teachers' perception of social dominance was examined using a behavioral criterion for determining accuracy of verbal judgments. Video records of agonistic interactions were obtained during approximately 60 hours of free-play at two preschool centers. Analyses of social conflict episodes ending in submission revealed linear dominance structures for both groups. Dominance perception was assessed in two ways. Both teachers and children were asked to rank-order a subgroup of children according to dominance. They were also asked to select the more dominant children in a number of predetermined pairs. Results indicated that teachers could accurately judge dyadic dominance relations, and that accuracy among children varied as a function of their status within the group hierarchy. Findings have implications for social dominance assessment methodology, and for the issue of consensual versus ecological validity in developmental studies of social perception.     

Interpersonal perception in a social context

Interpersonal perception among well-acquainted individuals in a social context was studied. High acquaintance was expected to provide perceivers with a large sample of target behaviors across situations. In turn, memory for acquaintances should be organized by social group and personality characteristics, as predicted by the social context-personality index theory. Differentiation of the target's traits in memory should produce a target effect on perception that is stronger than the perceiver effect. Furthermore, evidence for accuracy, meta-accuracy, independence of self- and other-perception, and reciprocity of affect were anticipated. A social relations analysis of data from a multiple-interaction, reciprocal design was used to study these phenomena. At the individual level, analyses indicated that perceptions of targets were determined primarily by target characteristics and secondarily by perceiver construction of the judgment. Also, perceivers judged targets as targets judged themselves, and targets knew in general how perceivers viewed them. Self- and other-perceptions were largely independent. Surprisingly, we did not observe dyadic meta-accuracy.     

Emotion perception explains age-related differences in the perception of social gaffes

Young (<36 years) and older (>59) adults viewed videos in which the same individual committed a faux pas, or acted appropriately, toward his coworkers. Older participants did not discriminate appropriate and inappropriate behaviors as well as young participants. Older participants also scored lower than young participants on an extensive battery of emotion recognition tests, and emotion performance fully mediated age differences in faux pas discrimination. The results provide further evidence for the role of emotion perception in a range of important social deficits.     

How social perception can automatically influence behavior

Do we always know the reasons for our actions? Or is our behavior sometimes unknowingly and unintentionally influenced by what we have recently perceived? It has been traditionally assumed that the automatic influence of knowledge in memory is limited to people's interpretation of the world, and stops short of shaping their actual behavior. Researchers in experimental social psychology have begun to challenge this assumption by documenting how people's behaviors can be unknowingly influenced by knowledge that is incidentally activated in memory during social perception. We review findings that suggest that the social knowledge that is incidentally activated while reading words or imagining events subsequently affects participants' behaviors across a range of ostensibly unrelated domains.