为何越减越肥?——限制性饮食者过度进食的心理机制及影响因素

限制性饮食作为一种被越来越多的女性所采用的减肥策略, 并不是一个有效的维持和降低体重的方法, 在许多情况下, 限制性饮食者反而比非限制性饮食者更容易发生过度进食, 本文回顾了国内外关于限制性饮食者过度进食的研究, 总结了限制性饮食者过度进食的心理机制以及预加载、情绪唤醒、自我损耗、认知资源分散、人格与社会五大影响因素, 并对现有的不足进行了探讨和对今后的研究提出了展望。     

友谊质量与青少年直觉进食：链式中介模型及性别差异

基于积极心理学, 采用友谊质量量表、自我怜悯量表、身体欣赏量表和直觉进食量表, 对2438名初中生进行调查, 并运用结构方程模型探讨友谊质量与青少年直觉进食的关系、作用机制及其性别差异。结果表明：(1)友谊质量与直觉进食呈显著正相关; (2)自我怜悯和积极身体意象在友谊质量与直觉进食间起中介作用, 且该中介作用包含三条路径：自我怜悯的单独中介作用、积极身体意象的单独中介作用以及自我怜悯-积极身体意象的链式中介作用; (3)中介效应性别差异仅出现在友谊质量与直觉进食(分维度)的关系中, 即“无条件地允许进食”和“进食不受情绪影响”两个维度。研究结果为促进青少年形成积极身体意象、健康饮食行为提供了参考建议和干预指导。     

卡车驾驶员的夜间视力研究

运用ＹＪＳ—ＩＩ型夜间视觉检查仪对２３８名男性卡车驾驶员的暗适应时间和夜间视力进行了测试。结果表明：卡车驾驶员暗适应时间的９５％上限值为５９．６７秒;卡车驾驶员暗适应时间和夜间视力的年龄阈值为４０岁;事故组与安全组卡车驾驶员暗适应时间存在显著差异（Ｐ＜０．０５）,事故组卡车驾驶员的暗适应时间较长,表明卡车驾驶员的暗适应能力差是引起夜间交通事故的重要因素。研究结果为驾驶员的选拔,安全教育以及制订预防夜间交通事放对策提供一定的理论依据。     

生命早期环境不可预测性对过度进食的影响:基于生命史理论

在生命史理论的视角下, 本研究通过两个研究揭示了生命早期环境不可预测性对过度进食的影响及其作用机制。研究1招募处于生命早期阶段的91名初中生(年龄12~14岁), 采用饱食进食(Eating in the absence of hunger, EAH)范式, 结果发现生命早期环境不可预测性能够显著正向预测个体饱食状态下的高热量食物选择(即过度进食); 研究2招募新冠病毒疾病(COVID-19)暴发背景下301名武汉市居民(高死亡威胁组)和179名其他省市居民(控制组) (年龄18~60岁)为被试, 通过问卷法回溯性地测量生命早期环境不可预测性并探究其影响当前过度进食的机制, 结果发现生命早期环境不可预测性通过生命史策略的中介作用间接影响过度进食。同时, 死亡威胁(新冠病毒疫情)扩大了环境不可预测性通过生命史策略间接影响过度进食的效应, 而社会支持则能缓冲这一效应。研究结果为COVID-19背景下和灾后居民的健康进食干预提供了依据。     

澳门博彩业建筑夜间光污染优化策略研究

澳门特别行政区是一个以博彩业闻名世界的地方,更因其博彩业的巨额收入引起了全世界投资者的关注。随着澳门特区政府对于博彩专营权开放,六家经营公司开始投入巨额资金打造博彩娱乐场,博彩业建筑也拔地而起,这些建筑的外貌及形态风格都给澳门注入了全新的元素,改变了其原有的城市风貌。随着居民夜晚活动时间延长和夜间出行率的提升,澳门的夜间景观也开始受到关注。目前澳门的夜景照明仍存在光污染、过度亮化等问题。文章通过搜集已有文献,发现我国目前虽然已有对于城市光污染的研究,但多集中于内地地区,澳门地区尚属于研究空白,文章针对澳门进行了小范围的研究,整理了LED及霓虹灯的相关概念,并以澳门为例对其博彩业建筑夜间照明的光污染问题进行了研究,总结出澳门博彩业建筑的光污染优化策略。     

夜间收缩压与体质量指数对高血压患者新发房颤的预测价值

观察夜间收缩压与体质量指数对高血压患者新发房颤的预测价值。通过对2013年3月~2016年3月在笔者所在医院治疗的279例高血压患者临床资料进行分析,分为新发房颤组和窦性心律组,采用Logistic回归及受试者工作特征(ROC)曲线分析夜间收缩压和体质量指数与高血压患者新发房颤的关系。夜间收缩压升高、肥胖为高血压患者新发房颤的危险因素。多因素Logistic回归显示夜间收缩压升高与体质量指数均可以独立预测高血压患者房颤的发生。体质量指数判定发生房颤的ROC曲线下面积要高于夜间收缩压,将二者联合的ROC曲线下面积均高于各自的预测值(P均0.05)。夜间血压升高、肥胖为导致新发房颤的危险因素。故应积极采取相关措施,控制夜间血压,控制体质量,这样可有效防止房颤的发生。     

暴食症的影响因素及其机制

暴食症表现为反复发作的暴饮暴食症状, 并伴随着强烈的沮丧感, 个体在进食时通常感觉失去控制, 进食大量食物。暴食行为受到应激、负性情绪、冲动性人格、身体不满意与限制性进食以及父母的喂养方式影响。关于暴食症发生和维持的理论模型主要有情感调节理论、食物成瘾模型、人际关系模型以及完美主义模型。未来要进一步探究影响暴食的因素, 完善暴食症的理论模型, 运用脑成像等技术深入研究暴食症的认知神经机制并加强对暴食症的干预与治疗研究。     

进食障碍亚临床状态的概念及诊断

自编异常进食行为问卷对南京地区703名青少年进行调查,通过分析80名高分被试出现的共同症状来界定进食障碍亚临床状态的概念和诊断。研究揭示,界定亚临床状态,要综合考察个体对身体的态度,体重,异常进食行为出现的频率、持续时间和严重程度等指标。     

具身认知视角的饮食消费行为——基于心理模拟“具身”方式

随着具身认知理论的发展,基于心理模拟"具身"方式的饮食消费行为研究得到了一些新颖、有趣的研究结果,为过食与肥胖、食品营销等问题的解决提供了新视角。心理模拟既能促进进食也能抑制进食;心理模拟容易性因素与动机性因素是影响心理模拟程度的两大类主要前因变量;未来需要进一步探索心理模拟的容易性因素与动机性因素、心理模拟提高消费欲望与产生腻厌反应的边界条件,以及利用心理模拟探讨肥胖高危人群——高奖赏敏感性个体过食的深层次内在机制等。     

睡眠时间参数对学前儿童问题行为的影响:消极情绪性的调节作用

本研究以338名学前儿童为被试,采用母亲报告法探究了学前儿童睡眠时间与问题行为之间的关系,以及儿童消极情绪性的调节作用。结果发现：（1）睡眠总时长对儿童内化和外化问题行为的主效应显著,而睡眠总时长与消极情绪性对儿童内化和外化问题行为的交互作用不显著;（2）夜间睡眠比对儿童内化问题行为的主效应显著,对儿童外化问题行为的主效应不显著;夜间睡眠比与消极情绪性对儿童内化问题行为的交互作用显著,即对高消极情绪性的儿童,夜间睡眠比能够显著负向预测其内化问题行为,而对低消极情绪性的儿童,夜间睡眠比对其内化问题行为的预测并不显著;夜间睡眠比与消极情绪性对儿童外化问题行为的交互作用不显著。     

Visual Attention to Pictorial Food Stimuli in Individuals With Night Eating Syndrome: An Eye-Tracking Study

Night eating syndrome (NES) is characterized by excessive evening and/or nocturnal eating episodes. Studies indicate an attentional bias towards food in other eating disorders. For NES, however, evidence of attentional food processing is lacking. Attention towards food and non-food stimuli was compared using eye-tracking in 19 participants with NES and 19 matched controls without eating disorders during a free exploration paradigm and a visual search task. In the free exploration paradigm, groups did not differ in initial fixation position or gaze duration. However, a significant orienting bias to food compared to non-food was found within the NES group, but not in controls. A significant attentional maintenance bias to non-food compared to food was found in both groups. Detection times did not differ between groups in the search task. Only in NES, attention to and faster detection of non-food stimuli were related to higher BMI and more evening eating episodes. The results might indicate an attentional approach-avoidance pattern towards food in NES. However, further studies should clarify the implications of attentional mechanisms for the etiology and maintenance of NES.     

High self-reported rates of neglect and emotional abuse, by persons with binge eating disorder and night eating syndrome

This study compared rates of self-reported childhood maltreatment in three groups diagnosed using semi-structured interviews: binge eating disorder (BED; n=176), night eating syndrome (NES, n=57), and overweight/obese comparison (OC, n=38). We used the Childhood Trauma Questionnaire (CTQ) to assess childhood maltreatment and the Beck Depression Inventory-II to assess depression levels. Reports of maltreatment were common in patients with BED (82%), NES (79%), and OC (71%). The BED group reported significantly more forms of maltreatment above clinical cut-points (2.4) than the OC (1.4) group but not the NES (1.8) group. The BED and NES groups reported more emotional abuse than the OC group. A higher proportion of the BED group reported emotional neglect and a higher proportion of the NES group reported physical neglect. Depression levels, which were higher in BED and NES than OC, were associated with higher levels of physical and emotional abuse and neglect. In conclusion, reported rates of physical and sexual abuse differed little across groups, whereas reports of neglect and emotional abuse were higher in the BED and NES groups than in the OC group and were associated with elevated depression levels.     

Objective and subjective bulimic episodes in the classification of bulimic-type eating disorders: Another nail in the coffin of a problematic distinction

We sought to further explore the validity of the distinction between objective bulimic episodes (OBEs) and subjective bulimic episodes (SBEs) in the study of bulimic-type eating disorders. Drawing on data obtained at the second, interview phase of a large-scale epidemiological study, we identified mutually exclusive subgroups of women with bulimic-type eating disorders who engaged in regular OBEs but not SBEs (n = 37) or regular SBEs but not OBEs (n = 52). These subgroups were compared on a wide range of outcomes, including socio-demographic characteristics, current levels of eating disorder psychopathology, general psychological distress and impairment in role functioning, current and lifetime impairment in quality of life specifically associated with an eating problem, (self)-recognition of an eating problem, health service utilization and use of psychotropic medication. The only difference between groups was that participants who reported regular OBEs were heavier than those who reported regular SBEs. The findings converge with those of previous research in suggesting that bulimic-type eating disorders characterized by regular SBEs, but not OBEs, do not differ in any clinically meaningful way from those characterized by regular OBEs, but not SBEs. Inclusion of bulimic-type eating disorders characterized by regular SBEs as a provisional category requiring further research in DSM-V appears warranted.     

The relationship between neuroticism and night eating: exploring the mediating roles of psychological distress and maladaptive coping

Night Eating Syndrome has been shown to be associated with various negative physical and psychological consequences. This study explored the relationship between neuroticism and night eating, which had not been studied before. We also examined the possible mediating roles of psychological distress and maladaptive coping for the relationship between neuroticism and night eating. A sample of 578 Chinese college students were assessed on several measures: The Revised Eysenck Personality Questionnaire Short Scale, the Night Eating Questionnaire, the Depression Anxiety Stress Scales, and the Simplified Coping Style Questionnaire. Results indicated that neuroticism was significantly and positively related to night eating (r = .38, p < .01), and the relationship between neuroticism and night eating was partially mediated by psychological distress, but not by maladaptive coping. The results not only revealed a medium-sized relationship between neuroticism and night eating, but also pointed out the importance of psychological distress as related to the relationship between neuroticism and night eating. Unlike neuroticism, which is a personality trait, psychological distress is an emotional state, and it is much more malleable through appropriate intervention. The treatment and intervention for night eating may benefit from our attention to the psychological distress.     

Eating Disorders—The Regulation of Positive as well as Negative Emotion Experience

Disordered eating behaviors are often conceptualized as maladaptive emotion regulation strategies. The present study investigated links between emotional experience, schematic belief systems, and psychological themes associated with eating disorders. In contrast to the majority of studies, which focus on just one or two emotions and use nonclinical samples, this study compared the full range of emotional experience in women with eating disorders to a control group. Measures used include the Differential Emotional Scale-IV, Youngs Early Maladaptive Schema Questionnaire, and Eating Disorder Inventory-2. The study provides the first empirical evidence that women diagnosed with eating disorders report experiencing pleasant as well as unpleasant emotions more frequently than do controls. A surprising finding was that pleasant emotions (joy, interest, surprise) correlated with eating disorder themes (EDI-2 subscales) more consistently than unpleasant emotions in the eating disorder group, while the reverse was true of the control group. Also of note, eating-disordered women reported significantly less anger and similar levels of fear vs. controls. While eating-disordered women scored more highly than do controls on all maladaptive schema (suggesting high levels of distress in women with eating disorders), the pattern of correlations between schema and emotion experience was distinctly different for each group and counterintuitive for the eating disorder group. In particular, pleasant emotion was highly correlated with maladaptive schema in the eating-disordered group but not in the control group. These marked group differences in the pattern of relationships between emotion experience, eating disorder themes, and belief systems suggest that it is not valid to draw conclusions about eating disorders from research that employs only nonclinical samples. The authors discuss these findings, and suggest that women with eating disorders are proficient at using disordered eating behaviors to manipulate their experience of both positive and negative emotional states, and that this dynamic should be recognized as an important maintenance factor.     

Subgrouping in obesity based on Rorschach personality characteristics

Conceptual (a priori) subgroups in obesity based on personality findings from the Rorschach Comprehensive System were suggested for 100 obese patients. The subgroups were further compared in terms of general anamnestic and behavioral data. The largest subgroup was Rorschach characterized by difficulties with emotions and a tendency towards depression. Demographic and behavioral data for this subgroup revealed intermediate or higher education, regular meals, eating disorders like binge eating, periodic variations in eating during the year and experiencing body size as having a psychological meaning. The other subgroup was characterized by coping liabilities and was further associated with a lower socio-economic level and irregular or chaotic meal patterns. For the group with emotional difficulties, the results suggest a more complex psychological pattern, where eating and emotions could be closely related. The group with coping liabilities could have difficulties other than emotional ones concerning food and eating, such as finding a structure for eating and making changes in lifestyle and habits.     

Binge Eating,Purging, and Restriction Symptoms: Increasing Accuracy of Prediction Using Machine Learning

Eating disorders are severe mental illnesses characterized by the hallmark behaviors of binge eating, restriction, and purging. These disordered eating behaviors carry extreme impairment and medical complications, regardless of eating disorder diagnosis. Despite the importance of these disordered behaviors to every eating disorder diagnosis, our current models are not able to accurately predict behavior occurrence. The current study utilized machine learning to develop longitudinal predictive models of binge eating, purging, and restriction in an eating disorder sample (N = 60) using real-time intensive longitudinal data. Participants completed four daily assessments of eating disorder symptoms and emotions for 25 days on a smartphone (total data points per participant = 100). Using data, we were able to compute highly accurate prediction models for binge eating, restriction, and purging (.76–.96 accuracy). The ability to accurately predict the occurrence of binge eating, restriction, and purging has crucial implications for the development of preventative interventions for the eating disorders. Machine learning models may be able to accurately predict onset of problematic psychiatric behaviors leading to preventative interventions designed to disrupt engagement in such behaviors.     

Overview of diagnosis and drug treatments of anxiety disorders

Anxiety disorders are common and often disabling. They fall into five main categories: panic disorder, social anxiety disorder, generalized anxiety disorder, obsessive-compulsive disorder and posttraumatic stress disorder, each of which have characteristic symptoms and cognitions. All anxiety disorders respond to drugs and psychological treatments. This review will focus on drug treatments. Recent research has emphasized the value of antidepressants especially the selective serotonin reuptake inhibitors, benzodiazepines, and related sedative-like compounds. The common co-existence of depression with all of the anxiety disorders means that the selective serotonin reuptake inhibitors are now generally considered to be the first-line treatments but the benzodiazepines have some utility especially in promoting sleep and working acutely to reduce extreme distress.     

The Struggle Continues: Addressing Concerns About Eating and Weight for Older Women’s Well-Being

Eating disorders and concern about weight are generally associated with younger women. This article first reviews the limited literature addressing the prevalence of disordered eating concerns in older women, both related to and independent of weight issues. Excessive concern about weight, body image and restricted eating/fasting appears to continue into the 60s and even 70s. Although bulimia nervosa and anorexia drop markedly in prevalence among older women, binge eating disorder continues to be evident. The article then provides an overview of Kristeller’s Mindfulness-Based Eating Awareness Training (MB-EAT) with particular focus on how the program appears well-matched to the concerns of many older women, including those with binge eating disorder. MB-EAT is a non-dieting approach that emphasizes heightened engagement with mind–body awareness, including hunger and satiety cues, and non-judgmental approaches to food choices and weight management. Evidence from an NIH-funded clinical trial shows that women above age 50 (45% of participants) responded significantly more strongly to the intervention on measures of self-acceptance and non-restrictive aspects of eating behavior and attitudes. Overall, the evidence suggests that further attention needs to be given to these issues in helping older women cultivate an optimally healthy and fulfilling lifestyle.