I can’t stop looking at them: Interactive effects of body mass index and weight dissatisfaction on attention towards body shape photographs

Although attentional biases toward body-related information contribute to the etiology and maintenance of body dissatisfaction (BD) and eating disorders (EDs), attentional disengagement in women with BD and EDs is not clear. The present study investigated the association between weight dissatisfaction and attentional disengagement from body-related pictures and the possible moderating effect of body mass index (BMI) on this relation. Two hundred and four undergraduate women engaged in an experiment using a pictorial spatial cueing paradigm including fat/thin bodies and neutral household photos. Partial correlations and simple slopes regression analyses were conducted with attentional disengagement index scores of each category of cues. Findings suggested that independent of BMI, weight dissatisfaction was directly associated with attentional disengagement from both fat and thin pictures. In addition, among women with low and medium BMIs, the more they were dissatisfied with their bodyweight, the more difficulty they had disengaging their attention from fat body pictures.     

Does body satisfaction differ between gay men and lesbian women and heterosexual men and women? A meta-analytic review

Studies investigating body image satisfaction among groups of different sexual orientations (i.e., gay men, lesbian women, and heterosexual men and women) have produced equivocal findings. To synthesise the available research, 27 studies (20 published and 7 unpublished) were meta-analysed (N=5220). Comparisons between heterosexual (n=1397) and gay men (n=984) produced a small effect size, with the former being slightly more satisfied with their bodies. An even smaller difference was observed for studies comparing heterosexual (n=1391) and lesbian women (n=1448), with greater levels of body satisfaction being evidenced by the latter group. Tests of homogeneity for each effect size were found to be highly significant. In an attempt to identify variables that may be responsible for the observed heterogeneity, the following categorical factors were assessed: the measures used to evaluate body satisfaction, date of study (1980s versus 1990s+), publication status (published or unpublished), and body weight. The results of this exploratory search for potential moderator variables as well as limitations of the current meta-analysis are discussed.     

From implicit skills to explicit knowledge: a bottom-up model of skill learning

This paper presents a skill learning model CLARION. Different from existing models of mostly high-level skill learning that use a top-down approach (that is, turning declarative knowledge into procedural knowledge through practice), we adopt a bottom-up approach toward low-level skill learning, where procedural knowledge develops first and declarative knowledge develops later. Our model is formed by integrating connectionist, reinforcement, and symbolic learning methods to perform on-line reactive learning. It adopts a two-level dual-representation framework (Sun, 1995), with a combination of localist and distributed representation. We compare the model with human data in a minefield navigation task, demonstrating some match between the model and human data in several respects.     

Context and Prior Impression Effects on Attention, Judgment Standards, and Ratings: Contrast Effects Revisited

The present study extended research on contrast effects by (a) examining the effect of context performances on ratings of a target performance when a prior impression of the target performer already exists, and (b) clarifying the issue of whether contrast is caused by attention to context-discrepant behavior or shifts in judgment standards. The results demonstrated that the existence of a prior impression mitigates the influence of context performances on ratings. Judgment standards were found to be unstable and dependent on information provided to raters by the experimental manipulations. Regression analyses showed that both attention and standards of judgment mediate the relationship between context and ratings. Implications of these findings for contrast effects, performance ratings, and the importance of reliable judgment standards for real-world performance appraisals are discussed.     

A Meta-analysis of Prereferral Intervention Teams: Student and Systemic Outcomes

Although prereferral intervention teams (PIT) are common in public schools, there is little and conflicting research to support them. The current article conducted an empirical meta-analysis of research on PITs by reviewing 72 articles. Nine of the articles matched the inclusion criteria for the study and 57 effect size (ES) coefficients were computed, which resulted in a mean ES of 1.10. The studies were further broken down by category of dependent variable (DV), and resulted in a mean ES of 1.15 for student outcomes and 0.90 for systemic outcomes. PITs that were implemented by university faculty resulted in a mean ES of 1.32, but field-based PITs resulted in a mean ES of only .54. Studies that used random assignment resulted in higher ES coefficients than those that used nonrandom assignment. Implications for research and cautious suggestions for practice are discussed.     

A meta‐analysis of serotonin metabolite 5‐HIAA and antisocial behavior

During the past 25 years, researchers have examined the relationship between neurochemical variables and antisocial behavior in human adults, but none has been studied more intensely than the serotonin metabolite 5‐hydroxyindoleacetic acid (5‐HIAA). The goal of the current study was to employ meta‐analytic procedures to quantitatively evaluate selected evidence on the relationship between 5‐HIAA and antisocial behavior. It was expected that antisocial groups would show reduced cerebrospinal fluid 5‐HIAA compared with non–antisocial groups. This study also aimed to assess moderators that could influence the relationship between 5‐HIAA and antisociality. An electronic search and strict inclusion criteria identified 20 reports used in this meta‐analysis. Results showed a significant overall mean effect size (ES = –.45, P < .05) in the direction of lowered 5‐HIAA in antisocial vs. non–antisocial groups. A significant moderating effect for age indicated that groups comprised of antisocial individuals younger than 30 years exhibited larger negative effect sizes (ES = –1.37, P < .05) than groups with older subjects (ES = –.31, P < .05). There were no moderating effects for gender, target of violence, history of suicide, and alcoholism. Age effects may help explain age‐related declines in crime. The fact that effects did not differ based on other moderating variables supports models of reduced serotonin in antisocial individuals, regardless of type of crime or psychiatric problems. Aggr. Behav. 28:299–316, 2002. © 2002 Wiley‐Liss, Inc.     

A Comparison of Latent Inhibition and Learned Irrelevance Pre-Exposure Effects in Rabbit and Human Eyeblink Conditioning

The learning of an association between a CS and a US can be retarded by unreinforced presentations of the CS alone (termed latent inhibition or LI) or by un-correlated presentations of the CS and US (termed learned irrelevance or LIRR). In rabbit eyeblink conditioning, there have been some recent failures to replicate LI. LIRR has been hypothesized as producing a stronger retardation effect than LI based on both empirical studies and computational models. In the work presented here, we examined the relative strength of LI and LIRR in eyeblink conditioning in rabbits and humans. In both species, a number of preexposure trials sufficient to produce LIRR failed to produce LI (Experiments 1 & 3). Doubling the number of CS pre-exposures did produce LI in rabbits (Experiment 2), but not in humans (Experiment 4). LI was demonstrated in humans only after manipulations including an increased inter-trial interval or ITI (Experiment 5). Overall, it appears that LIRR is a more easily producible pre-exposure retardation effect than LI for eyeblink conditioning in both rabbits and humans. Several theoretical mechanisms for LI including the conditioned attention theory, stimulus compression, novelty, and the switching theory are discussed as possible explanations for the differences between LIRR and LI. Overall, future work involving testing the neural substrates of pre-exposure effects may benefit from the use of LIRR rather than LI.     

快速节俭启发式--基于有限理性和生态理性的简单决策规则

本文阐述了德国“马克斯．普朗克人类发展研究所”以Gerd Gigerenzer教授为代表的“适应行为与认知中心”简称“ABC研究中心(组)”关于判断、推理和决策制定简单启发式研究的理论背景、研究思路和技术路线,着重介绍了该研究中心在有限理性和生态理性假设基础上提出的一系列极富创意的快速节俭启发式规则,并对围绕这些简单决策规则开展的研究活动作了简要介绍。     

A Fine Risk To Be Run? The Ambiguity of Eros and Teacher Responsibility

Teachers are often placed in a space of tensionbetween responding to students as persons andresponding to students through theirinstitutionally-defined roles. Particularlywith respect to eros, which has becomeincreasingly the subject of strictinstitutional legislation and regulation,teachers have little recourse to a language ofresponsibility outside an institutional frame. By studying the significance of communicativeambiguity for responsibility, this paperexplores what is ethically at stake forteachers in erotic forms of communication. Specifically, it is Levinas's own ambiguousunderstanding of the ethical significance oferos, and what we have to learn from it, thatoffers a way of reading the place of eros inresponsibility. I conclude my discussion withsome thoughts on what a renewed understandingof responsibility might mean at the personaland institutional levels.