Contributions of visual and embodied expertise to body perception

Recent research has demonstrated that our perception of the human body differs from that of inanimate objects. This study investigated whether the visual perception of the human body differs from that of other animate bodies and, if so, whether that difference could be attributed to visual experience and/or embodied experience. To dissociate differential effects of these two types of expertise, inversion effects (recognition of inverted stimuli is slower and less accurate than recognition of upright stimuli) were compared for two types of bodies in postures that varied in typicality: humans in human postures (human-typical), humans in dog postures (human-atypical), dogs in dog postures (dog-typical), and dogs in human postures (dog-atypical). Inversion disrupts global configural processing. Relative changes in the size and presence of inversion effects reflect changes in visual processing. Both visual and embodiment expertise predict larger inversion effects for human over dog postures because we see humans more and we have experience producing human postures. However, our design that crosses body type and typicality leads to distinct predictions for visual and embodied experience. Visual expertise predicts an interaction between typicality and orientation: greater inversion effects should be found for typical over atypical postures regardless of body type. Alternatively, embodiment expertise predicts a body, typicality, and orientation interaction: larger inversion effects should be found for all human postures but only for atypical dog postures because humans can map their bodily experience onto these postures. Accuracy data supported embodiment expertise with the three-way interaction. However, response-time data supported contributions of visual expertise with larger inversion effects for typical over atypical postures. Thus, both types of expertise affect the visual perception of bodies.     

At the same time or apart in time? The role of presentation timing and retrieval dynamics in generalization

Several bodies of research have found different results with regard to presentation timing, categorization, and generalization. Both presenting instances at the same time (simultaneous) and presenting instances apart in time (spacing) have been shown to facilitate generalization. In this study, we resolved these results by examining simultaneous, massed, and spaced presentations in 2-year-old children's (N = 144) immediate and long-term performance on a novel noun generalization task. Results revealed that, when tested immediately, children in the simultaneous condition outperformed children in all other conditions. However, when tested after 15 min, children in the spaced condition outperformed children in all other conditions. Results are discussed in terms of how retrieval dynamics during learning affect abstraction, retention, and generalization across time.     

Using dynamic risk and protective factors to predict inpatient aggression: Reliability and validity of START assessments

The Short-Term Assessment of Risk and Treatability (START; C. D. Webster, M. L. Martin, J. Brink, T. L. Nicholls, & S. L. Desmarais, 2009; C. D. Webster, M. L. Martin, J. Brink, T. L. Nicholls, & C. Middleton, 2004) is a relatively new structured professional judgment guide for the assessment and management of short-term risks associated with mental, substance use, and personality disorders. The scheme may be distinguished from other violence risk assessment instruments because of its inclusion of 20 dynamic factors that are rated in terms of both vulnerability and strength. This study examined the reliability and validity of START assessments in predicting inpatient aggression. Research assistants completed START assessments for 120 male forensic psychiatric patients through review of hospital files. They also completed Historical-Clinical-Risk Management-20 (HCR-20; C. D. Webster, K. S. Douglas, D. Eaves, & S. D. Hart, 1997) and Hare Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995) assessments. Outcome data were coded from hospital files for a 12-month follow-up period using the Overt Aggression Scale (OAS; S. C. Yudofsky, J. M. Silver, W. Jackson, J. Endicott, & D. W. Williams, 1986). START assessments evidenced excellent interrater reliability and demonstrated both predictive and incremental validity over the HCR-20 Historical subscale scores and PCL:SV total scores. Overall, results support the reliability and validity of START assessments and use of the structured professional judgment approach more broadly, as well as the value of using dynamic risk and protective factors to assess violence risk. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Smiling virtual agent in social context

A smile may communicate different communicative intentions depending on subtle characteristics of the facial expression. In this article, we propose an algorithm to determine the morphological and dynamic characteristics of virtual agent’s smiles of amusement, politeness, and embarrassment. The algorithm has been defined based on a virtual agent’s smiles corpus constructed by users and analyzed with a decision tree classification technique. An evaluation, in different contexts, of the resulting smiles has enabled us to validate the proposed algorithm.     

Weight-related actual and ideal self-states,discrepancies, and shame,guilt, and pride: Examining associations within the process model of self-conscious emotions

The aim of this study was to examine the associations between women's actual:ideal weight-related self-discrepancies and experiences of weight-related shame, guilt, and authentic pride using self-discrepancy (Higgins, 1987) and self-conscious emotion (Tracy & Robins, 2004) theories as guiding frameworks. Participants (N = 398) completed self-report questionnaires. Main analyses involved polynomial regressions, followed by the computation and evaluation of response surface values. Actual and ideal weight self-states were related to shame (R² = .35), guilt (R² = .25), and authentic pride (R² = .08). When the discrepancy between actual and ideal weights increased, shame and guilt also increased, while authentic pride decreased. Findings provide partial support for self-discrepancy theory and the process model of self-conscious emotions. Experiencing weight-related self-discrepancies may be important cognitive appraisals related to shame, guilt, and authentic pride. Further research is needed exploring the relations between self-discrepancies and a range of weight-related self-conscious emotions.     

Thinking the voice: neural correlates of voice perception

The human voice is the carrier of speech, but also an "auditory face" that conveys important affective and identity information. Little is known about the neural bases of our abilities to perceive such paralinguistic information in voice. Results from recent neuroimaging studies suggest that the different types of vocal information could be processed in partially dissociated functional pathways, and support a neurocognitive model of voice perception largely similar to that proposed for face perception.     

Free viewing perceptual asymmetries for judgment of brightness and quantity: dependence on stimulus orientation

Previous research has indicated that normals exhibit strong leftward biases during free-viewing perceptual judgments of brightness and quantity. When participants view two symmetrical objects and they are forced to choose which object appears darker or more numerous, participants usually select the stimulus with the relevant feature on the left side. The present study investigated the possibility that these perceptual asymmetries are dependent on scanning a stimulus horizontally across the midline by administering a task with two rectangular reversed stimuli presented either horizontally or vertically. When the stimuli were presented horizontally (crossing the midline), participants exhibited leftward biases, but these biases disappeared when the stimuli were presented vertically. This result supports the position that free-viewing perceptual asymmetries are dependent on scanning the stimuli across the midline.     

Uncovering hockey fans' motivations behind their derogatory behaviors and how these motives predict psychological well-being and quality of social identity

ObjectiveThis article tested whether hockey fans' selfdetermined and non self-determined motivation for engaging in derogatory behaviors against an outgroup team predicted the frequency of these behaviors, fans' psychological well-being, and the quality of their social identity as a fan of their team. The two psychological theories we employ in the current research (i.e., self-determination theory and social identity theory) have different assumptions concerning the motivation behind derogatory fan behavior.DesignThree correlational studies were conducted among hockey fans.MethodsFans of rival hockey fans (Study 1; N = 45), fans of the Montreal Canadiens (Study 2; N = 181), and fans of NHL teams (Study 3; N = 105) completed measures of selfdetermination to engage in derogatory behaviors, frequency of these behaviors, psychological well-being, and quality of social identity. Multiple regression analyses were conducted to test if the frequency, well-being, and quality of social identity variables were predicted by the self-determined and non self-determined motivations to engage in derogatory behaviors.ResultsAs expected based on self-determination theory (SDT), the more hockey fans engage in derogatory behaviors for non self-determined reasons, the lower their well-being and the less frequently they report engaging in the derogatory behaviors. Moreover, as expected based on social identity theory (SIT), the more hockey fans engage in the derogatory behaviors for self-determined reasons, the higher their well-being, the frequency of these behaviors, and the more positive their social identity.ConclusionsTheses results are interpreted in light of SDT and SIT's theoretical propositions. Comparisons are made with prior studies conducted on this topic.     

An Interpretative Phenomenological Examination of Psychosocial Changes among Breast Cancer Survivors in their First Season of Dragon Boating

This study used an interpretative phenomenological perspective to qualitatively examine changes in body image and social support experienced by novice participants in breast cancer survivor dragon boating programs. Fourteen women were interviewed at the beginning and end of their first dragon boating season. The participants typically experienced increased perceptions of strength and fitness, and a shift towards discussing body image with respect to fitness, strength, and musculature rather than weight and appearance. Many women discussed an emerging athletic identity. Social benefits included connecting to women who understood the breast cancer experience and could share first-hand information. Some women also reported struggling with the constant reminder of being a survivor. Overall, breast cancer survivors experienced benefits, but further work should explore how they cope with challenges and how dragon boating could inform other physical activity contexts for this population.