认知重评对负性效价的抑制促进条件性恐惧消退

认知重评能有效降低个体对情感刺激的负性情绪体验, 但指导性认知重评在恐惧记忆治疗中效果存在争议。本文将认知重评范式与辨别式条件恐惧反应范式结合, 以效价和US预期值为指标, 探讨指导性认知重评训练对恐惧情绪习得和消退的影响效果。以低认知重评能力个体为被试, 在实验前24 h进行指导性认知重评训练。条件性恐惧任务为期2天, 第一天完成条件性恐惧的习得和消退任务, 第二天完成条件性恐惧的再消退任务。结果显示, 经过重评训练后个体在条件性恐惧任务中的恐惧情绪效价显著较低, 说明认知重评有效降低低认知重评能力个体在急性应激状态下的负性情绪体验。所有被试均成功完成辨别式条件性恐惧的习得和消退任务, 因此重评训练并不削弱个体对危险或者安全信息的辨别能力。但在条件性恐惧的消退过程中, 认知重评指导训练加快了恐惧消退, 且24 h后测得的条件性恐惧程度显著较低, 说明指导性重评提高了条件性恐惧记忆的消退效率, 并减弱了条件性恐惧的消退返回。     

疼痛恐惧相关的注意偏向及其矫正

疼痛恐惧是影响和维持慢性痛的重要因素。不同材料和被试类型情况下, 疼痛恐惧均主要作用于个体对疼痛相关信息的早期注意加工阶段, 表现为注意警觉模式。该注意模式使个体将注意维持在疼痛上, 从而干扰了对非疼信息的注意能力。矫正疼痛恐惧相关注意偏向可以改善疼痛体验。未来研究应采用更具生态效度的任务测量疼痛恐惧相关的注意偏向及其神经基础, 进一步考察矫正疼痛恐惧相关注意偏向能否改善慢痛患者的忧郁和功能丧失等问题。     

疼痛恐惧的形成、泛化与消退

疼痛恐惧源于把疼痛等同于伤害的灾难化信念及对疼痛的负性解释, 它在慢性疼痛和能力丧失的发生和发展过程中起着重要作用。疼痛恐惧可以通过联合学习和观察学习等方式获得, 并且在具有相似特征的刺激中存在泛化现象。通过教育干预和等级暴露疗法等可以成功消退疼痛恐惧, 在消退过程中要控制安全信息等因素的不良影响。在疼痛恐惧的获得与消退中, 主要有杏仁核, 脑岛和前扣带皮层等脑区参与。未来的研究可以集中在深入探讨疼痛恐惧形成中的泛化及消退后的恢复、再巩固等现象, 加强其临床上的应用, 并综合心理、生物和认知神经科学, 研究疼痛恐惧的获得、泛化与消退的深层机制。     

评价恐惧理论及相关研究述评

社交焦虑认知行为模型将负面评价恐惧作为社交焦虑的核心特征, Weeks和Heimberg提出评价恐惧概念并认为, 无论是正面评价恐惧还是负面评价恐惧, 都是社交焦虑的核心特征。Watson和Friend提出负面评价恐惧至今已有40年, 负面评价恐惧的测量工具、遗传特质、注意偏向及其在学习等领域中的应用已有相关研究。而正面评价恐惧的研究才刚刚开展。评价恐惧测量工具的完善、研究内容的拓展、临床干预的充实、跨文化研究的加强等都是未来的研究方向。     

惊反射在创伤后应激障碍研究中的应用:高唤醒与恐惧抑制

创伤后应激障碍(PTSD)是唯一在诊断标准中包含惊反射改变的精神疾病.相比自我报告法,对惊反射的实验室测量与总体症状关联更紧密,并已积累了较多神经机制研究成果,可作为连接前临床与临床研究的桥梁.在惊反射应用于PTSD研究的初期,它主要作为PTSD患者高唤醒症状的客观指标,但是尚未发现惊反射强度的变化与总体症状的明确关系.近年来,惊反射与情境性焦虑、恐惧抑制等新范式结合,发现特定情境下惊反射改变是PTSD患者特有的表现.惊反射在创伤应激障碍研究中所取得的新进展对PTSD病理机制的探索和临床诊断都有所启发和推进.     

普高生与中职生的个人未来目标和担忧

以1995名普高生和中职生为被试,采用未来取向问卷(中文版),考察了普高生和中职生的个人未来目标和担忧的内容与时间广度。研究发现:普高生与中职生较多地关注未来教育、职业、婚姻/家庭、家庭安康和自我,预期重要生活事件发生在二三十岁左右。普高生更多地提及教育目标和担忧以及与家庭安康有关的担忧,而中职生更多地提及职业目标和担忧,并预期职业目标和担忧发生的年龄较早;农村学生更多地提及与未来教育和家庭安康有关的目标,而相对较少提及职业目标,并预期教育和职业目标以及职业担忧发生的年龄早于城市学生;男生更多地提及职业和婚姻/家庭目标以及与自我有关的担忧,而女生更多地提及与家庭安康有关的目标和教育担忧,并预期教育和职业目标发生的年龄较早。     

Different Disgust Domains Specifically Relate to Mental and Contact Contamination Fear in Obsessive-Compulsive Disorder: Evidence From a Path Analytic Model in an Italian Clinical Sample

Both contact contamination (CC) and mental contamination (MC) fears—which combined represent the most common manifestation of obsessive-compulsive disorder (OCD)—have been widely associated with disgust propensity. However, extant research explored this relationship using measures assessing only pathogen-related disgust, not taking into account the potential role played by sexual and moral disgust, despite literature about MC suggesting that this might be particularly relevant. In Study 1, the psychometric properties of the Italian version of the Three Domains of Disgust Scale (TDDS) were assessed in a large Italian community sample. Exploratory and confirmatory factor analyses confirmed the three-factor structure of the TDDS. The scale also showed good internal consistency and construct validity. In Study 2, the differential patterns of relationships between CC and MC and the three disgust domains were explored in an Italian clinical OCD sample using a path analytic approach. The TDDS-Pathogen subscale was a unique predictor of CC while the TDDS-Sexual subscale was a unique predictor of MC, after controlling for anxiety and depression. Surprisingly, the TDDS-Moral subscale was not a predictor of either domain of contamination fear. Limitations and clinical implications are discussed.     

Is Heightened Disgust Propensity Truly a Risk Factor for Contamination-Related Obsessive-Compulsive Disorder?

Disgust propensity (DP) has been conceptualized as a stable personality trait that confers risk for contamination-related OCD (C-OCD). However, the extent to which DP leads to the subsequent development of C-OCD is unclear. In fact, the presence of C-OCD might lead to an increase in DP rather than the inverse. The present study was aimed to test this hypothesis in a large clinical sample of OCD patients (≥ 21 years of age) with (C-OCD; n = 56) and without (NC-OCD; n = 103) contamination-related symptoms that completed measures of OCD symptoms, depression, anxiety, and DP. DP was assessed twice, in reference to the present situation (T1) and to when the participant was 18 years old (T0). The two groups did not significantly differ in DP at T0. However, C-OCD participants reported higher DP scores than NC-OCD at T1. Furthermore, the T1 vs T0 difference in DP was significant only in the C-OCD group. Subsequent analyses also showed that T1 DP levels, but not T0 levels, significantly predicted contamination-related symptoms. Despite study limitations, these findings question the role of DP as a risk factor for C-OCD.     

Afraid of one afraid of all: When threat associations spread across face-types

Fear can be acquired for objects not inherently associated with threat (e.g. birds), and this threat may generalize from prototypical to peripheral category members (e.g. crows vs. penguins). When categorizing people, pervasive stereotypes link Black men to assumed violence and criminality. Faces with Afrocentric features (prototypical) are more often associated with threat and criminality than non-Afrocentric (peripheral) faces regardless of whether the individual is Black or White. In this study, using a priming paradigm, threat associations related to negative racial stereotypes were tested as a vehicle for spreading fear across face-type categories. Results showed more negative than positive judgments for White face targets but only when the prime was primarily non-Afrocentric (i.e. Eurocentric). Black face targets were judged more negatively than positively regardless of prime. This suggests some cognitive processes related to threat generalizations of objects extend to complex social categories.