Observation of another's action but not eye gaze triggers allocentric visual perspective

In the present paper, we investigated whether observation of bodily cues—that is, hand action and eye gaze—can modulate the onlooker's visual perspective taking. Participants were presented with scenes of an actor gazing at an object (or straight ahead) and grasping an object (or not) in a 2?×?2 factorial design and a control condition with no actor in the scene. In Experiment 1, two groups of subjects were explicitly required to judge the left/right location of the target from their own (egocentric group) or the actor's (allocentric group) point of view, whereas in Experiment 2 participants did not receive any instruction on the point of view to assume. In both experiments, allocentric coding (i.e., the actor's point of view) was triggered when the actor grasped the target, but not when he gazed towards it, or when he adopted a neutral posture. In Experiment 3, we demonstrate that the actor's gaze but not action affected participants' attention orienting. The different effects of others' grasping and eye gaze on observers' behaviour demonstrated that specific bodily cues convey distinctive information about other people's intentions.     

社会行为的效价信息对注意捕获的影响：基于帮助和阻碍行为的探讨

采用学习-测验两任务范式, 通过3项实验探讨了社会行为的效价信息对注意捕获的影响。在学习阶段, 被试观看具有积极效价的帮助行为(某智能体帮助另一智能体爬山)和消极效价的阻碍行为(某智能体阻碍另一智能体爬山), 以及与各自运动特性匹配的无社会交互行为, 其目的为建立不同智能体颜色与社会行为效价信息的联结关系。在测验阶段, 则分别检验社会行为中的施动方(帮助者和阻碍者)颜色和受动方(被帮助者和被阻碍者)颜色的注意捕获效应。结果发现, 消极社会行为中施动方颜色和受动方颜色均更容易捕获注意, 而积极社会行为效价信息并没有改变联结特征值的注意捕获效应; 且相比于受动方, 与消极社会行为效价建立联结的施动方颜色的注意捕获效应更强。该结果提示, 存在消极社会行为效价驱动的注意捕获, 且消极的效价信息与卷入社会行为所有个体的特征建立联结, 但该联结中施动方物理特征具有更高的注意优先性。这一发现暗示, 声誉信息与对社会交互行为的整体表征可能综合作用于对社会交互事件的注意选择。     

The Uncanny Self in Love: Divorced Catholic Women Remember Abortion in Romania

This essay presents an ethnographic account of two divorced Catholic women's memories of praying to the Virgin Mary while seeking illegal abortions under the Romanian socialist regime. These women's stories focused on troubling memories of being in love, reflections that were retrospectively shaped by divorce. Drawing on Sigmund Freud's notion of the uncanny, I call these recollections uncanny memories of the self in love. Uncannily remembering one's self in love combines experiential self‐examination and ethical assessment of actions. The notion of the uncanny self in love thus helps bridge the divide between experience‐ and action‐oriented approaches to lived ethics. I argue that the ethical significance of the Virgin Mary's actions depended on my acquaintances’ approach to love. For one woman seeking to stay estranged from her ex‐husband, the Virgin Mary's actions accentuated his ethical immaturity. My other acquaintance harbored more ambivalent feelings toward her ex‐husband; for her, talking about the Virgin Mary helped her relativize feelings of ethical indignation. As a core implication of this argument, I urge greater awareness of the problematic tendency to include the need for greater awareness of tendencies in theories of lived ethics to reify socially situated perspectives on love.     

Age-Related Changes in Children's and Adults’ Explanations of Interpersonal Actions

We investigated the content of children's and adults’ explanations of interpersonal actions. Participants were 5-, 7-, and 9-year-old children, as well as adults, who were presented with 8 stories containing either prosocial or antisocial target actions, and asked to explain why each actor performed that action. In half of the stories, an interpersonal event preceded the action. Children and adults provided situational and mental-state explanations, but mental-state explanations were especially common for antisocial actions not preceded by an interpersonal event. With increasing age, participants explained prosocial actions by referring to the actor's goals, but referred to the actor's emotions and beliefs to explain antisocial actions. Finally, adults were most likely to mention psychological goals. These results suggest that (a) elementary school children provide a variety of explanations for interpersonal events; (b) children use different types of explanations flexibly, depending on the context and nature of the target action; (c) the frequency of different types of explanations for interpersonal actions changes during childhood; and (d) between middle childhood and adulthood, the recognition of psychological goals increases greatly.     

Imagining nice and nasty events in childhood or adulthood: recent positive events show the most imagination inflation

We explored whether event recency and valence affect people’s susceptibility to imagination inflation. Using a three-stage procedure, subjects imagined positive and negative events happening in their distant or recent past. First, subjects rated how confident they were that they had experienced particular positive and negative events in childhood or adulthood using a Life Events Inventory (LEI). Two weeks later, they imagined two positive and two negative events from the LEI. Finally, they rated their confidence on the LEI a second time. For positive events, subjects showed more imagination inflation for adulthood than childhood events. For negative events, they showed no difference in imagination inflation for adulthood and childhood events. We discuss factors that may influence source confusions for memories of the past and highlight directions for future research.     

Infants' Understanding of Looking,Pointing, and Reaching as Cues to Goal-Directed Action

Phillips, Wellman, and Spelke (2002) provided experimental evidence indicating that by the age of 12 months infants use information about an adult's gaze-direction and emotional expression to predict action. We investigate the generality of this ability, using Phillips et al.'s paradigm across different referential gestures. If infants have a rich concept of people as intentional agents, they should encode the person-goal relation and predict action from a variety of referential gestures (such as looking and pointing), as well as from (goal-directed) reaching and grasping actions. Results of Studies 1 and 2 (within-subjects design) and Study 3 (between-subjects design) converge in indicating that Phillips et al.'s basic finding generalizes to reach-and-gaze as cue condition. In Study 3b generalization was demonstrated for point-and-gaze as cue condition. Whereas these findings suggest a general understanding of referential intent at 12 months, a control experiment (Study 4) showed that infants' action expectations could be reversed following a psychologically inconsistent habituation phase (actor points at Object A and subsequently picks up Object B) in the point-and-gaze condition, although no such reversal was obtained in the reach-and-gaze condition. These findings indicate that 1-year-old infants have well-established expectations about action goals signaled by an actor's gaze-direction and reaching and grasping movements but that an understanding of pointing as a cue to action intentions may develop later and follow a different route of acquisition.     

Action identity: evidence from self-recognition, prediction, and coordination

Prior research suggests that the action system is responsible for creating an immediate sense of self by determining whether certain sensations and perceptions are the result of one's own actions. In addition, it is assumed that declarative, episodic, or autobiographical memories create a temporally extended sense of self or some form of identity. In the present article, we review recent evidence suggesting that action (procedural) knowledge also forms part of a person's identity, an action identity, so to speak. Experiments that addressed self-recognition of past actions, prediction, and coordination provide ample evidence for this assumption. The phenomena observed in these experiments can be explained by the assumption that observing an action results in the activation of action representations, the more so, when the action observed corresponds to the way in which the observer would produce it.     

Object Perception,Attention, and Memory 2008 Conference Report 16th Annual Meeting,Chicago, IL,USA

We investigated how processing unfolds across time as adults view novel manual activity. Adults advanced through slideshows of an actor performing sleight-of-hand manoeuvres; dwell times were recorded to each slide. As in past work involving larger-scale intentional action scenarios, adults allocated more attention to slides depicting breakpoints—transitions from one event segment to the next—than slides displaying mid-stream action, indicating that dwell times are sensitive to adults' recovery of segmental structure in intricate manual activity. Adults also allocated increased attention towards slides indicative of causal structure, indicating that dwell times index processing of causally relevant information as well as segmental structure. We were additionally curious if adults' learning outcomes would differ as a function of whether they paced themselves or watched slideshows advance at a computer-controlled pace. Memory did not differ, but adults viewing computer-controlled slideshows displayed an advantage in performing the tricks. A single attentional focus may have helped adults learn to re-enact the actions, relative to a split attentional focus.     

Ten‐month‐old infants use prior information to identify an actor's goal

For adults, prior information about an individual's likely goals, preferences or dispositions plays a powerful role in interpreting ambiguous behavior and predicting and interpreting behavior in novel contexts. Across two studies, we investigated whether 10‐month‐old infants’ ability to identify the goal of an ambiguous action sequence was facilitated by seeing prior instances in which the actor directly pursued and obtained her goal, and whether infants could use this prior information to understand the actor's behavior in a new context. Experiment 1 demonstrated that the goal preview impacted infants’ subsequent action understanding, but only if the preview was delivered in the same room as the subsequent action sequence. Experiment 2 demonstrated that infants’ failure to transfer prior goal information across situations arose from a change in the room per se and not other features of the task. Our results suggest that infants may use their understanding of simple actions as a leverage point for understanding novel or ambiguous actions, but that their ability to do so is limited to certain types of contextual changes.     

Attachment styles and relationship quality: Actual,perceived, and ideal partner matching

Attachment dimension matching in dating relationships and how matching relates to relationship quality were investigated. Across 2 studies, individuals preferred similar but more secure partners (lower anxiety and lower avoidance) as reflected by their ideals. In Study 1, greater similarity between the self and perceptions of the partner's anxiety predicted more positive relationship outcomes (e.g., relationship satisfaction, trust). Similar results were found for ideal–perceived partner avoidance similarity, whereas ideal–perceived partner anxiety similarity was less important. Study 2 involved both partners in the relationship and indicated that relationship outcomes were predicted by the actor's and partner's attachment dimensions as well as by ideal–perceived partner similarity and self–perceived partner similarity.     

Reactions to Affirmative Action: Seeking the Bases for Resistance1

It has been argued that affirmative action negatively affects the self‐perceptions of beneficiaries. In contrast, it was hypothesized that this would not occur when individual qualifications were explicitly considered and, indeed, that failure under discrimination would be more self‐detrimental. However, perceptions of reverse discrimination may buffer negative self‐attributions on the part of nonbeneficiaries. Responses in an experimental simulation indicated that, of several affirmative actions for women, passive nondiscrimination was viewed as the fairest response to discrimination. While women's self‐perceptions were not affected by affirmative actions, they did suffer under failure. The presence of affirmative actions did not alleviate the effects of failure on men's self‐perceptions. Possible alternatives for resistance to affirmative action are assessed and discussed.     

Action relevance induces an attentional weighting of representations in visual working memory

Information maintained in visual working memory (VWM) can be strategically weighted according to its task-relevance. This is typically studied by presenting cues during the maintenance interval, but under natural conditions, the importance of certain aspects of our visual environment is mostly determined by intended actions. We investigated whether representations in VWM are also weighted with respect to their potential action relevance. In a combined memory and movement task, participants memorized a number of items and performed a pointing movement during the maintenance interval. The test item in the memory task was subsequently presented either at the movement goal or at another location. We found that performance was better for test items presented at a location that corresponded to the movement goal than for test items presented at action-irrelevant locations. This effect was sensitive to the number of maintained items, suggesting that preferential maintenance of action relevant information becomes particularly important when the demand on VWM is high. We argue that weighting according to action relevance is mediated by the deployment of spatial attention to action goals, with representations spatially corresponding to the action goal benefitting from this attentional engagement. Performance was also better at locations next to the action goal than at locations farther away, indicating an attentional gradient spreading out from the action goal. We conclude that our actions continue to influence visual processing at the mnemonic level, ensuring preferential maintenance of information that is relevant for current behavioral goals.     

Stone-Tool Use in Wild Monkeys: Implications for the Study of the Body-Plus-Tool System

Handheld tools transform the actor's body into a body-plus-tool system such that the fit of the actor's body, the tool, and the task demand channel movement in action. In this study, we performed a biomechanical analysis of percussive actions in wild bearded capuchin monkeys, Sapajus libidinosus at Fazenda Boa Vista, Brazil, as they cracked open tucum nuts with anvil-and-hammer tools from the frame of reference of the body-plus-tool system. The ratio of hammer mass to body mass—the “body-scaled hammer mass”—influenced the monkeys' actions with a hammer and their performance in cracking nuts. Both body mass and hammer mass did not independently influence the monkeys' actions with a hammer and their performance in cracking nuts. These findings support the hypothesis that the properties of the body-plus-tool system are not simply the sum of the properties of the body and the tool.     

Summary statistics in the attentional blink

We used the attentional blink (AB) paradigm to investigate the processing stage at which extraction of summary statistics from visual stimuli (“ensemble coding”) occurs. Experiment 1 examined whether ensemble coding requires attentional engagement with the items in the ensemble. Participants performed two sequential tasks on each trial: gender discrimination of a single face (T1) and estimating the average emotional expression of an ensemble of four faces (or of a single face, as a control condition) as T2. Ensemble coding was affected by the AB when the tasks were separated by a short temporal lag. In Experiment 2, the order of the tasks was reversed to test whether ensemble coding requires more working-memory resources, and therefore induces a larger AB, than estimating the expression of a single face. Each condition produced a similar magnitude AB in the subsequent gender-discrimination T2 task. Experiment 3 additionally investigated whether the previous results were due to participants adopting a subsampling strategy during the ensemble-coding task. Contrary to this explanation, we found different patterns of performance in the ensemble-coding condition and a condition in which participants were instructed to focus on only a single face within an ensemble. Taken together, these findings suggest that ensemble coding emerges automatically as a result of the deployment of attentional resources across the ensemble of stimuli, prior to information being consolidated in working memory.     

Visual attention and emotional memory: recall of aversive pictures is partially mediated by concurrent task performance

The emotional enhancement of memory is often thought to be determined by attention. However, recent evidence using divided attention paradigms suggests that attention does not play a significant role in the formation of memories for aversive pictures. We report a study that investigated this question using a paradigm in which participants had to encode lists of randomly intermixed negative and neutral pictures under conditions of full attention and divided attention followed by a free recall test. Attention was divided by a highly demanding concurrent task tapping visual processing resources. Results showed that the advantage in recall for aversive pictures was still present in the DA condition. However, mediation analyses also revealed that concurrent task performance significantly mediated the emotional enhancement of memory under divided attention. This finding suggests that visual attentional processes play a significant role in the formation of emotional memories.     

Temporal coordination between performing musicians

Many common behaviours require people to coordinate the timing of their actions with the timing of others' actions. We examined whether representations of musicians' actions are activated in coperformers with whom they must coordinate their actions in time and whether coperformers simulate each other's actions using their own motor systems during temporal coordination. Pianists performed right-hand melodies along with simple or complex left-hand accompaniments produced by themselves or by another pianist. Individual performers' preferred performance rates were measured in solo performance of the right-hand melody. The complexity of the left-hand accompaniment influenced the temporal grouping structure of the right-hand melody in the same way when it was performed by the self or by the duet partner, providing some support for the action corepresentation hypothesis. In contrast, accompaniment complexity had little influence on temporal coordination measures (asynchronies and cross-correlations between parts). Temporal coordination measures were influenced by a priori similarities between partners' preferred rates; partners who had similar preferred rates in solo performance were better synchronized and showed mutual adaptation to each other's timing during duet performances. These findings extend previous findings of action corepresentation and action simulation to a task that requires precise temporal coordination of independent yet simultaneous actions.     

Memory for actions in autism spectrum disorder

This study explored how memory for actions in children with autism spectrum disorder (ASD) and typically developing children might benefit from self-performance and experimenter demonstration, and whether these groups possess metamemory knowledge of their performance levels in this task. Children with autism were less accurate on the action memory task when they carried out each action themselves during encoding, or when no actions were implemented during this phase, but this difference was abolished when the experimenter demonstrated each action during encoding. Despite clear difficulties in the self-performed condition relative to typical children, the group with ASD also showed a beneficial effect of performing the actions themselves during instruction. Finally, children with autism were as accurate as typical children in judging the accuracy of their own memory performance, indicating an absence of metamemory difficulties for this task.     

Intention and attention in ideomotor learning

Human actions may be carried out in response to exogenous stimuli (stimulus based) or they may be selected endogenously on the basis of the agent's intentions (intention based). We studied the functional differences between these two types of action during action–effect (ideomotor) learning. Participants underwent an acquisition phase, in which each key-press (left/right) triggered a specific tone (low pitch/high pitch) either in a stimulus-based or in an intention-based action mode. Consistent with previous findings, we demonstrate that auditory action effects gain the ability to prime their associated responses in a later test phase only if the actions were selected endogenously during acquisition phase. Furthermore, we show that this difference in ideomotor learning is not due to different attentional demands for stimulus-based and intention-based actions. Our results suggest that ideomotor learning depends on whether or not the action is selected in the intention-based action mode, whereas the amount of attention devoted to the action–effect is less important.     

How and why do infants imitate? An ideomotor approach to social and imitative learning in infancy (and beyond)

It has been proposed that already in infancy, imitative learning plays a pivotal role in the acquisition of knowledge and abilities. Yet the cognitive mechanisms underlying the acquisition of novel action knowledge through social learning have remained unclear. The present contribution presents an ideomotor approach to imitative learning (IMAIL) in infancy (and beyond) that draws on the ideomotor theory of action control and on recent findings of perception–action matching. According to IMAIL, the central mechanism of imitative and social learning is the acquisition of cascading bidirectional action–effect associations through observation of own and others’ actions. First, the observation of the visual effect of own actions leads to the acquisition of first-order action–effect associations, linking motor codes to the action’s typical visual effects. Second, observing another person’s action leads to motor activation (i.e., motor resonance) due to the first-order associations. This activated motor code then becomes linked to the other salient effects produced by the observed action, leading to the acquisition of (second-order) action–effect associations. These novel action–effect associations enable later imitation of the observed actions. The article reviews recent behavioral and neurophysiological studies with infants and adults that provide empirical support for the model. Furthermore, it is discussed how the model relates to other approaches on social-cognitive development and how developmental changes in imitative abilities can be conceptualized.     

Phenomenal characteristics of memories of daily actions in checking‐prone individuals

The purpose of this study was to investigate memories of daily actions in checking‐prone participants. A sample of 419 non‐clinical participants completed a questionnaire evaluating Obsessive–Compulsive Disorder (OCD) and a questionnaire evaluating sensory details, emotions, vividness, confidence and memory perspective of seven everyday actions such as ‘brushing one's teeth’. The main results indicated that checking was related to low levels of visual, kinaesthetic and spatial details in memories for actions, more negative emotions and anxiety when performing actions and low confidence in memory quality. In addition, checking‐prone individuals more frequently reported their memories from the perspective of an external observer than non‐checking‐prone individuals. In general, these results seem to indicate that checking is associated with impersonal memories for everyday actions, as well as low confidence in these memories. The role of anxiety is also evoked, as it was significantly related to poor memory characteristics. Copyright © 2007 John Wiley & Sons, Ltd.