社交媒体中自拍相关行为对身体映像的影响

社交媒体已经成为人们生活中的一部分, 其中自拍是社交媒体上常见的以外貌为核心的信息。研究发现, 自拍相关行为与用户的身体映像密切相关。社交媒体上的自拍相关行为包括自拍投入、自拍操纵、发布自拍、浏览自拍和自拍反馈投入等。由于个体在社交媒体上兼具信息发布者和接收者的双重身份, 所以可以将自拍投入、自拍操纵和发布自拍归类为发布者的主动性自拍行为, 将浏览自拍、自拍反馈投入归类为接收者的反应性自拍行为, 同时可以从主动性和反应性两个视角分析自拍相关行为对身体映像的影响, 并将作用过程分成身体监测、标准内化、外貌比较, 然后从个人、人际、环境三个层面列举可能影响自拍相关行为和身体映像的关系及作用过程的因素。未来研究可以从丰富被试取样、优化研究设计、细究自拍行为、关注调节变量和环境因素等方面进一步探讨自拍相关行为对身体映像的影响, 并从理论层面探讨网络空间中建构自我的过程。     

Consequences of Repeated Critical Versus Neutral Body Checking in Women With High Shape or Weight Concern

Body checking is a repeated behavior conducted in an attempt to gain information about one’s shape, weight, size, or body composition. Body checking is associated with negative behavioral, emotional, and cognitive outcomes and may maintain body dissatisfaction and eating disorders. The precise function and consequences of body checking remain less well understood. Specifically, immediate and delayed impacts of repeated critical body checking (CBC) have not been determined. The current study randomly assigned 142 young women with high shape/weight concern to daily 10-min CBC, neutral body checking (NBC), or a non-body critical checking (NBCC) comparison condition, examining their immediate and delayed (one-week follow-up) effects on body satisfaction, self-esteem, and negative affect. Multilevel modeling and follow-up planned comparisons found that compared to NBCC, CBC participants’ body satisfaction and self-esteem immediately decreased, but negative affect improved from baseline to follow-up. Compared to CBC, NBC participants’ self-esteem and negative affect improved immediately, and their self-esteem improved over time compared to NBCC. Over time, all participants’ state body satisfaction improved, regardless of condition. Our findings suggest a 10-min CBC session may function differently than typical (harmful) in vivo body checking. However, reasons for this difference are unclear. Additional research is needed to distinguish (harmful) in vivo body checking from CBC procedures such as this and other mirror exposure interventions. Research is needed to examine the effects of varying CBC duration and instructions during body exposure to further clarify mechanisms of change during body exposures.     

Body Investment as a Protective Factor in the Relationship Between Acquired Capability for Suicide and Suicide Attempts

Acquired capability for suicide is associated with increased suicide risk and behaviors, but little research has examined factors that may qualify this relationship. Body investment is proposed as one such factor, as it may engage self-preservation instincts and serve as a buffer to capability for suicide. It was expected that facets of body investment (body feelings, body care, comfort with touch, and body protection) would moderate the relationship between acquired capability for suicide and suicide attempts. The current study included a sample of 1,150 undergraduate students with a mean age of 19.74 (3.44). The majority of the sample identified as female (71%) and White/Caucasian (78%). Participants completed self-report measures of body investment (Body Investment Scale [BIS]), acquired capability (Acquired Capability for Suicide Scale [ACSS]), suicide thoughts and attempt history (Self-Harm Behavior Questionnaire [SHBQ]), and demographic information. Four moderation analyses were run using the PROCESS macro; one for each body investment subscale. All facets of body investment showed significant moderation except for body care. Acquired capability was significantly associated with suicide attempts when body feelings, comfort with touch, and body protection were low, but not when they were high. Results indicate that fostering aspects of body investment may be important for suicide prevention.     

Interoceptive Abnormalities and Suicidality: A Systematic Review

Dysfunction of interoception (i.e., difficulties sensing the physiological state of one's own body) is increasingly linked to different mental health disorders and suicidal outcomes. The aim of this study was to systematically review the literature on the association between suicidality and interoception, as well as identify potential confounders and mediators of the relationship. We conducted a systematic review of four databases, allowing for critical examination of the role of different measures of interoception (accuracy, sensibility, awareness, cognitive/emotional evaluation) across the suicide continuum (ideation, plans, attempts, deaths). The search strategy identified 22 studies (14,988 participants). Preliminary but limited evidence was found for impaired interoceptive accuracy among those reporting suicide attempt histories. We found evidence of interoceptive sensibility disturbances across the suicide continuum, including experiences of not trusting one’s own body sensations and impaired abilities to sustain and control attention to such sensations. Consistent evidence was also reported for disturbances related to cognitive and emotional evaluations of interoceptive sensations. The latter was particularly pronounced for those reporting suicide attempts, relative to those reporting suicidal thinking or planning alone. Overall, this review’s results suggest that interoceptive abnormalities are potentially important indicators of risk for suicidal thinking, intentions, and behaviors. However, due to the inconsistent adjustment for variables of interest, and cross-sectional designs, it is unclear whether interoceptive changes and disturbances have a direct role, or whether the association is explained and mediated by key third variables (e.g. depression, disordered eating, emotional dysregulation). We discuss the implications with respect to suicidal risk and therapeutic interventions.     

Body image mediates an association between personality and mental health

Personality and body image have been identified as important correlates of mental and physical health. This study sought to explore whether body image mediates the association between the major dimensions of trait personality and self‐reported mental and physical health. In total, 451 Australian adults (121 men, 331 women; M_age = 21.88 ± 7.65 years) completed questionnaires at a single time‐point. After controlling for some demographic and anthropometric factors (e.g., body mass index), neuroticism was associated with all components of body image and mental and physical health. Extraversion, openness, and conscientiousness were associated with mental health and some components of body image. Multiple mediator models identified body image discrepancy and appearance evaluation as mediating the association between personality (neuroticism, extraversion, and conscientiousness) and mental health. No significant mediation effects were observed for physical health, and mediation effects were not moderated by participant gender. These findings provide evidence that personality relates to self‐reported mental health, in part, through the variance shared with body image.     

The role of the head in configural body processing: Behavioural and electrophysiological evidence from the inversion and scrambling effect

The present study aimed to further explore the role of the head for configural body processing by comparing complete bodies with headless bodies and faceless heads (Experiment 1). A second aim was to further explore the role of the eye region in configural face processing (Experiment 2). Due to that, we conducted a second experiment with complete faces, eyeless faces, and eyes. In addition, we used two effects to manipulate configural processing: the effect of stimulus inversion and scrambling. The current data clearly show an inversion effect for intact bodies presented with head and faces including the eye region. Thus, the head and the eye region seem to be central for configural processes that are manipulated by the effect of stimulus inversion. Furthermore, the behavioural and electrophysiological body inversion effect depends on the intact configuration of bodies and is associated with the N170 as the face inversion effect depends on the intact face configuration. Hence, configural body processing depends not only on the presence of the head but rather on a complete representation of human bodies that includes the body and the head. Furthermore, configural face processing relies on intact and complete face representations that include faces and eyes.     

The Effects of Appearance-Based Comments and Non-Appearance-Based Evaluations on Body Dissatisfaction and Disordered Eating Urges: An Ecological Momentary Assessment Study

The current study used ecological momentary assessment (EMA) to investigate whether appearance-based comments, social and performance-based evaluations affected levels of body dissatisfaction (BD) and urges to engage in disordered eating behaviors (DE) throughout daily life. A total of 620 participants completed a baseline questionnaire assessing sociodemographic variables. Participants then downloaded a mobile app which alerted them to complete short surveys assessing their levels of BD, DE urges, and experiences of receiving comments and evaluations six times per day for 7 days. Negative appearance-based comments predicted greater levels of state BD, while positive appearance comments predicted lower levels of state BD. Negative social and performance-based evaluations predicted an increase in state BD, while positive evaluations predicted a decrease in this outcome variable. No significant predictor was found for the DE urge outcomes. The present findings suggest that receiving negative and positive feedback in various domains of one’s life may predict opposite outcomes for body image. However, these effects do not necessarily associate with urges to engage in DE in a nonclinical population.     

身体清洁增加道德判断严苛性:来自元分析的证据

该研究采用元分析技术探讨身体清洁对道德判断影响及其调节因素。通过文献检索和筛选,共有14篇文献29个独立样本符合元分析标准(N=4184)。元分析结果显示,身体清洁对道德判断影响的效应量较小(d=-0.233),且身体清洁总体上可以增加道德判断的严苛性; 调节效应检验表明,身体清洁对道德判断的影响不受身体清洁方式、清洁启动方式与东西方文化背景的影响。