Evidence for an encounter expectancy bias in fear of spiders

Whereas research has demonstrated that phobic or fearful individuals overestimate the likelihood of incurring aversive consequences from an encounter with feared stimuli, it has not yet been systematically investigated whether these individuals also overestimate the likelihood (i.e., the frequency) of such encounters. In the current study, spider-fearful and control participants were presented with background information that allowed them to estimate the overall likelihood that different kinds of animals (spiders, snakes, or birds) would be encountered. Spider-fearful participants systematically overestimated the likelihood of encountering a spider with respect to the likelihood of encountering a snake or a bird. No such expectancy bias was observed in control participants. The results thus strengthen our idea that there indeed exist two different types of expectancy bias in high fear and phobia that can be related to different components of the fear response. A conscientious distinction and examination of these two types of expectancy bias are of potential interest for therapeutic applications.     

On the Role of Vertical Texture Cues in Height Perception

When people judge height from the top looking down they tend to overestimate vertical distance. Initial findings suggest that this perceptual bias may be in part due to the experienced fear of falling. However, previous studies did not control for potentially relevant optical invariants, especially vertical texture gradient cues, that may inform such perceptual judgments. In this study, we examined to what degree texture gradient cues may account for the perceptual bias in height perception. To this end, in 2 different conditions in which vertical texture gradient cues were either present or absent, participants provided distance and size judgments from an elevated position (5.68 m) and from the ground. Results revealed a systematic overestimation of vertical extent and object size when judged from a height. Yet, the absence or presence of texture gradient cues did not differentially influence these judgments. Finally, although fear levels were reported to be larger at the elevated position than on the ground, fear levels did not correlate with the perceptual bias, thereby demanding further research into the mechanisms underlying the perceptual bias in height perception.     

Expectancy bias and the persistence of posttraumatic stress

Anxious individuals tend to overestimate the probability that encounters with anxiogenic stimuli (CS) will be followed by aversive consequences (UCS). This study examined whether such (biased) UCS expectancies predict the persistence of PTSD symptoms. A total of 265 soldiers were recruited before a four-month deployment to Iraq in 2004. About 2-5 months after deployment, 171 (65%) soldiers completed self-report scales about adverse events in Iraq and PTSD symptoms, and a UCS expectancy task. In this task, participants were exposed to a series of deployment-related and deployment-unrelated (control) picture stimuli. For each trial, the participants indicated the subjective probability that a particular slide would be followed by an imminent loud noise. Around 15 months after deployment, 130 (76%) soldiers completed surveys about PTSD symptoms again. Only a small group of participants had high levels of PTSD symptoms. Regression analyses showed that the level of PTSD symptoms at 15 months was predicted by earlier PTSD symptoms, but also and independently by an enhanced UCS expectancy to deployment-related stimuli. The findings support the notion that UCS expectancy bias contributes to the persistence of PTSD symptoms.     

状态焦虑对条件性恐惧泛化的影响

恐惧的过度泛化是焦虑障碍患者重要的潜在病因,探索焦虑对恐惧泛化的影响具有重要意义。本研究在恐惧习得后,通过恐惧创伤电影范式诱发状态焦虑组被试的焦虑水平,采用主观预期值和皮电反应值作为指标,考察状态焦虑对条件性恐惧泛化的影响。结果表明,恐惧创伤电影范式显著提高了状态焦虑组被试的焦虑水平。在泛化阶段,状态焦虑组被试表现出更强的恐惧泛化,对与条件刺激相似的泛化刺激表现出更强烈的恐惧以及更高的预期。状态焦虑使得被试恐惧泛化的消退更慢,持续时间更长。研究同时发现,在状态焦虑下,被试对条件刺激的辨识出现增强趋势。研究结果提示在对经历负性事件个体进行临床干预时,可通过降低其焦虑水平来减少过度泛化。     

Mental reinstatement of context and return of fear in spider-fearful participants

Extant findings in the animal and human conditioning literature demonstrate that renewal, termed return of fear in studies with humans, occurs when reexposure to a previously feared phobic stimulus occurs in a context different than the one present during extinction. The present study investigated whether mental reinstatement of the treatment context at follow-up could attenuate context-based return of fear. Forty-eight spider-fearful individuals received exposure therapy in one of two contexts, and were followed-up 1 week later in the treatment or a new context. Half of the participants received instructions to mentally reinstate the treatment context before the follow-up test. Self-report data replicated previous research on contextually driven return of fear. Furthermore, participants who mentally reinstated the treatment context, before encountering the phobic stimulus in a new context at follow-up, had less return of fear than those who did not. Limitations of the current study, as well as implications for phobia treatment, are discussed.     

Social Exclusion and Disengagement of Covert Attention from Social Signs: The Moderating Role of Fear of Negative Evaluation

Previous research has demonstrated that social exclusion motivates individuals with low fear of negative evaluation (FNE) to pay attention to signs of social acceptance, but it does not motivate individuals with high FNE to do so. However, it remains unclear whether this finding reflects overt or covert attentional bias because the researchers employed a dot‐probe task. In order to resolve this ambiguity, the present study solely assessed disengagement of covert attention from social signs after exclusion manipulation in an experiment with university students (N = 60). As a result, exclusion delayed disengagement of covert attention from facial stimuli regardless of their types of expression for participants with low FNE, but such delay was not observed for participants with high FNE. The result indicated that social exclusion enhances attention to social information in individuals with low FNE, whereas it does not in individuals with high FNE. We discuss the possibility that a decline in inclusionary status affects overt and covert attentional processes differently.     

Phobia-relevant illusory correlations: the role of phobic responsivity

The authors investigated the role of phobic responsivity in the generation of phobia-relevant illusory correlations. As a means of disentangling the contributions of prior fear and elicited fear responses, half of a group of phobic women received 1 mg alprazolam (n = 21), and half received a placebo (n = 22). A group of nonfearful women (n = 24) was included to control for prior fear per se. Participants were exposed to slides of spiders, weapons, and flowers that were randomly paired with a shock, a siren, or nothing. Postexperimental covariation estimates and on-line outcome expectancies were assessed. Irrespective of both prior and elicited fear, participants postexperimentally overassociated spiders and shock. Yet, only women with spider phobia displayed a persisting fear-confirming expectancy bias. This bias was similar for the placebo and alprazolam groups. Thus, the bias appeared to be due to preexisting phobogenic beliefs, whereas phobic responsivity played a negligible role.     

List of Reviewers

ABSTRACT

Anxious individuals report disproportionately negative expectations concerning the future, termed the negative expectancy bias. In contrast, ageing is associated with an inflated expectancy for positive future events. A recent study [Steinman, S. A., Smyth, F. L., Bucks, R. S., MacLeod, C., &; Teachman, B. A. (2013). Anxiety-linked expectancy bias across the adult lifespan. Cognition and Emotion, 27, 345–355. doi:10.1080/02699931.2012.711743] found using an interpretation bias task, a negative expectancy bias in young adults and positive expectancy bias in older adults with high trait anxiety. Extending this, the current study examined expectancy bias for positive, negative and ambiguously emotionally toned information in younger and older adults with clinical levels of depression and anxiety to community control groups, thus allowing examination of both disorder status and age on biases. Clinical participants reported a pervasive tendency to expect negative events relative to positive regardless of whether the current scenarios were positive, negative or ambiguous. Older adults showed greater expectancy for future positive scenarios when the initial scenario was negative or ambiguous. Age moderated the negative expectancy bias shown by clinical participants for ambiguous scenarios. Clinical disorders in older adults attenuated the positive expectancy bias that was otherwise strong in community participants. These findings provide further evidence for age differences in processing of emotionally toned information, with older adults showing a greater expectancy for positive future events.     

Reappraisal mitigates overestimation of remembered pain in anxious individuals

Anxiety sensitivity, a trait characterised by fear of anxiety-related body sensations, has been linked to heightened attention to pain, appraising body sensations as threatening, and remembering threat-related information. We assessed whether individuals with greater anxiety sensitivity overestimate in remembering pain. We also assessed whether emotion regulation strategies that direct attention away from pain (distraction), or alter appraisals of pain (reappraisal), alleviate memory bias. Participants (N = 137) were randomly assigned to one of two emotion regulation conditions or to a control condition before taking part in a cold pressor task. Greater anxiety sensitivity was associated with overestimation in remembering pain. Engaging in reappraisal mitigated this memory bias but engaging in distraction did not. This is the first study to examine the relations among anxiety sensitivity, emotion regulation and memory for pain. The findings suggest that health-care practitioners can encourage reappraisal to promote more positive memories of procedural pain, particularly in patients high in anxiety sensitivity.     

积极情绪对条件性恐惧泛化的抑制作用

恐惧的过度泛化是焦虑障碍的核心症状之一,表现为患者对与原危险刺激极不相似的安全刺激也产生恐惧反应。本研究采用经典条件恐惧范式,以US主观预期、回溯性恐惧评定、回溯性效价评定和皮电反应作为恐惧反应的指标,通过"最好自我"训练来诱发被试的积极情绪,考察了恐惧习得后的积极情绪对于恐惧泛化的影响。本研究发现,积极情绪能有效地抑制条件性恐惧的泛化,增强被试对安全信号的学习,并对消退后的恐惧重建现象起到预防作用。研究同时显示,恐惧泛化在主观评定指标和生理指标间出现了分离,这表明积极情绪对恐惧泛化的抑制作用是一个综合的过程,可能涉及到不同的作用机制。本研究结果提示可以通过诱发积极情绪,抑制条件性恐惧的泛化,对临床干预有一定的启发意义。     

Strategic and Automatic Threat Processing in Chronic Musculoskeletal Pain: A Startle Probe Investigation

Attentional bias research with chronic pain samples has yielded conflicting results. In the present investigation the startle paradigm was used to test the postulate that fear‐based mechanisms play an important role in attentional biases for pain‐related threat in chronic pain. Participants, including 31 individuals with chronic musculoskeletal pain and 20 healthy controls, completed a startle task designed to measure attention to different types of words (neutral vs sensory pain vs affective pain vs health catastrophe) presented at different levels of cognitive processing (strategic vs automatic). Measures of fear‐based individual difference variables, including anxiety sensitivity and fear of pain, were also completed. Startle amplitudes and latencies to acoustic startle probes that followed word presentations were recorded. Data were analyzed with repeated measures ANOVAs and correlational analysis. Significant between‐group differences were found indicating that, relative to chronic pain participants, healthy controls had higher startle amplitude index scores for health catastrophe words. There was also a trend among patients with chronic pain for greater startle amplitude index scores for strategic presentations of sensory pain words. In the automatic condition, all participants demonstrated a lower startle latency index for sensory words relative to both affect and health catastrophe words, suggesting participants had more difficulty disengaging from affect and health catastrophe words or were more avoidant of sensory words. Correlational analyses indicated that startle response indices for words related to health catastrophe became more pronounced for chronic pain patients as anxiety sensitivity and fear of pain increased. Implications and directions for future research are discussed.     

高低强迫清洗倾向个体对负性情绪注意偏向的差异

摘 要 本研究采用返回抑制范式,以诱发厌恶、恐惧和中性情绪的图片为线索,考察高、低强迫清洗倾向个体对负性情绪刺激注意偏向的差异及其发生机制。结果表明：（1）被试对诱发厌恶和恐惧的图片均产生了注意偏向且注意偏向是由注意解除困难所引起;（2）被试对诱发厌恶图片的注意偏向程度显著大于对诱发恐惧图片的注意偏向程度;（3）高、低强迫清洗倾向个体对诱发厌恶和恐惧图片的注意偏向程度之间的组间差异均不显著。     

Anxiety-linked expectancy bias across the adult lifespan

Anxiety is characterised by a negative expectancy bias, such that anxious individuals report negatively distorted expectations about the future. Contrary to anxiety, ageing is characterised by a positivity effect, such that ageing is associated with a tendency to attend to and remember positive information, relative to negative information. The current study integrates these literatures to examine anxiety- and age-linked biases when thinking about the future. Participants (N=1,109) completed a procedure that involved reading valenced scenarios (positive, negative, or ambiguous) and then rating the likelihood of future valenced events occurring. Results suggest that ageing and anxiety have independent and opposing effects. Heightened anxiety was associated with a reduced expectancy for positive events, regardless of the scenarios’ current emotional valence, whereas increased age was associated with an inflated expectancy for positive events, which was strongest when individuals were processing socially relevant or negative scenarios.     

Terror mismanagement: evidence that mortality salience exacerbates attentional bias in social anxiety

Death anxiety is a basic fear underlying a range of psychological conditions, and has been found to increase avoidance in social anxiety. Given that attentional bias is a core feature of social anxiety, the aim of the present study was to examine the impact of mortality salience (MS) on attentional bias in social anxiety. Participants were 36 socially anxious and 37 non-socially anxious individuals, randomly allocated to a MS or control condition. An eye-tracking procedure assessed initial bias towards, and late-stage avoidance of, socially threatening facial expressions. As predicted, socially anxious participants in the MS condition demonstrated significantly more initial bias to social threat than non-socially anxious participants in the MS condition and socially anxious participants in the control condition. However, this effect was not found for late-stage avoidance of social threat. These findings suggest that reminders of death may heighten initial vigilance towards social threat.     

Fear generalisation in individuals with high neuroticism: increasing predictability is not necessarily better

Fear generalisation, a process by which conditioned fear spreads to similar but innocuous stimuli, is key in understanding why some individuals feel unsafe in objectively non-threatening situations. Both trait neuroticism and lack of predictability about the likelihood of feared consequences are associated with negative affect in the face of ambiguity and may increase the degree to which fear generalises. Undergraduates (N?=?129) with varying degrees of neuroticism were randomised to either high- or low-instructional predictability conditions prior to fear acquisition. A fear generalisation test measured risk ratings and attentional bias on a modified dot-probe paradigm. Among individuals with higher neuroticism, providing instructional predictability did not reduce fear; these individuals reported higher risk and increased attentional bias toward ambiguous stimuli. Overall, for individuals with higher neuroticism, predictability information hurt rather than helped interpretation of ambiguous stimuli, challenging a common conceptualisation of predictability as a factor that reduces fear.     

个体攻击性对愤怒表情类别知觉的影响

探讨了个体攻击性对愤怒表情加工中反应偏向和敏感性的影响。使用愤怒、恐惧原型生成表情连续体作为实验材料, 采用类别知觉实验范式考察了高、低攻击个体识别和辨别愤怒-恐惧连续体的类别转折点和斜率。结果发现, 与低攻击个体相比, 高攻击个体识别愤怒-恐惧连续体类别界线处的曲线斜率更大; 高攻击个体具有类别界线向恐惧一端偏移的倾向, 但并没有达到统计显著。这表明, 高攻击个体不存在敌意归因偏向, 而是对愤怒和恐惧表情的转变具有更高的敏感性。     

控制幻觉的研究方法、形成机制和影响因素

控制幻觉是指在完全不可控或部分不可控的情境下, 个体由于不合理地高估自己对环境或事件结果的控制力而产生的一种判断偏差。控制幻觉普遍存在于博彩游戏、医疗保健、心理健康、投资决策等实践领域。控制幻觉的研究方法主要包括间接测量方法、自我报告方法和实验室任务方法。控制启发式理论和调节定向理论则对控制幻觉的产生原因进行了解释。控制幻觉的影响因素包括人格因素、动机、权力、反馈、事件与个体的关联性、指导语等。未来的研究可从控制幻觉的多变量及交互作用研究、跨文化研究、调控策略研究等方面做进一步探讨。     

模拟法官决策中心理控制源对后见偏差的影响

考察模拟法官决策中心理控制源对后见偏差的影响。实验采用2（心理控制源：外控型、内控型）×3（有无策略：后见组、分散注意组、指导组）两因素被试间实验设计。采用自编两个案例及问卷测查模拟法官决策中后见效应的差异。实验结果发现,不同心理控制源是导致模拟法官决策中后见偏差存在差异的影响因素。同时,两种策略都能够有效减少模拟法官决策中的后见偏差。     

Safety Behavior After Extinction Triggers a Return of Threat Expectancy

Safety behavior is involved in the maintenance of anxiety disorders, presumably because it prevents the violation of negative expectancies. Recent research showed that safety behavior is resistant to fear extinction. This fear conditioning study investigated whether safety behavior after fear extinction triggers a return of fear in healthy participants. Participants learned that two stimuli (A and C) were followed by an aversive loud noise (“threat”), and one stimulus (B) was not. Participants then learned to use safety behavior that prevented the loud noise. Next, A and C were no longer followed by the loud noise, which typically led to extinction of threat expectancy. Safety behavior then became available again for C, but not for A and B. All participants used safety behavior on these C trials. In a final test phase, A, B, and C were presented once without the availability to use safety behavior. At each stimulus presentation, participants rated threat expectancy by indicating to what extent they expected that the loud noise would follow. Compared with the last extinction trial, threat expectancy increased for C in the test phase, whereas it did not increase for A and B. Hence, safety behavior after the extinction of classically conditioned fear caused a partial return of fear. The findings suggest that safety behavior may be involved in relapse after exposure-based therapy for anxiety disorders.     

不同自尊者对自我相关信息的记忆偏好

研究主要采用4(自尊类型)×2(词汇效价)混合设计,探讨了178名不同自尊水平或不同自尊类型大学生对自我相关信息的记忆偏好。结果发现:(1)高外显自尊者比低自尊者有更积极的记忆偏好,消极记忆偏好差异不显著;高内隐自尊者则比低自尊者有更弱的积极回忆偏好及更弱的消极回忆偏好。(2)就作为组内差异存在的记忆偏好而言,所有被试均有积极偏好;就作为组间差异存在的记忆偏好而言,脆弱的高自尊者有更强的积极偏好,但低自尊者也没有表现出明显的消极偏好。结果提示不同自尊者对自我相关信息有不同记忆偏好。