负面评价恐惧与大学生网络过度使用的关系：社交焦虑和自我控制的中介作用

本研究以864名大学生为被试,探讨负面评价恐惧与网络过度使用的关系以及社交焦虑和自我控制在这一关系中的中介作用。结果发现：（1）负面评价恐惧与社交焦虑和网络过度使用之间均呈显著正相关,与自我控制存在显著负相关;（2）负面评价恐惧通过社交焦虑和自我控制的中介作用对网络过度使用产生影响,这一中介作用包含了三条路径：社交焦虑和自我控制的单独中介作用以及社交焦虑-自我控制的序列中介作用。这一结论有助于促进对大学生网络过度使用的干预与预防。     

Renewal of fear and avoidance in humans to escalating threat: Implications for translational research on anxiety disorders

Exposure-based treatment for threat avoidance in anxiety disorders often results in fear renewal. However, little is known about renewal of avoidance. This multimodal laboratory-based treatment study used an ABA renewal design and an approach–avoidance (AP–AV) task to examine renewal of fear/threat and avoidance in twenty adults. In Context A, 9 visual cues paired with increases in probabilistic money loss (escalating threats) produced increases in ratings of feeling threatened and loss expectancies and skin-conductance responses (SCR). During the AP–AV task, a monetary reinforcer was available concurrently with threats. Approach produced the reinforcer or probabilistic loss, while avoidance prevented loss and forfeited reinforcement. Escalating threat produced increasing avoidance and ratings. In Context B with Pavlovian extinction, threats signaled no money loss and SCR declined. During the AP–AV task, avoidance and ratings also declined. In a return to Context A with Pavlovian threat extinction in effect during the AP–AV task, renewal was observed. Escalating threat was associated with increasing ratings and avoidance in most participants. SCR did not show renewal. These are the first translational findings to highlight renewal of avoidance in humans. Further research should identify individual difference variables and altered neural mechanisms that may confer increased risk of avoidance renewal.     

Some fear-potentiating effects of fluprazine hydrochloride in mice

The fear-potentiating effects of fluprazine hydrochloride were explored in a series of five experiments. The drug was found to strongly inhibit entry into a novel open field, exploration of a complex maze, or approach to a novel object placed in the animal's home cage. Time sampling techniques were used to assess drug effects on frequencies of immobility, activity, and grooming and rearing responses prior to and for 70 min after footshock. There were no group differences during the 10 min immediately following shock but the groups diverged steadily in immobility, activity, and grooming for the remainder of the observations. Post-shock activity and grooming responses increased steadily towards baseline values among control mice but remained at low levels or declined among drug-treated mice. Immobility responses declined steadily among control mice but increased substantially among the fluprazine-treated mice throughout post-shock observations. Pairs of male mice treated with fluprazine were also found to maintain greater intermouse distances in a novel linear runway than pairs of undrugged adult males, juvenile males, or male-female pairs. It is suggested that fluprazine hydrochloride both potentiates fear and alters its time course in addition to interfering in some way with normal olfactory processes.     

Stronger renewal in human fear conditioning when tested with an acquisition retrieval cue than with an extinction retrieval cue

It was previously demonstrated in our laboratory that conditioned fear in humans can renew after extinction, when this procedure took place in a different context (ABA-renewal [Vansteenwegen et al. (2005). Return of fear in a human differential conditioning paradigm caused by a return to the original acquisition context. Behaviour Research and Therapy, 43(3), 323–336]). Using the same experimental design, we now tested the power of retrieval cues to interact with this contextual renewal phenomenon. Two groups went through acquisition and extinction (in a different context). They were then tested in the original acquisition context and in the presence of a retrieval cue. In the acquisition-cue group, this cue previously featured during the acquisition procedure; in the extinction-cue group, the cue previously featured during the extinction procedure. As expected, renewal of conditioned electro-dermal responding and retrospective expectancy ratings was strongest in the acquisition-cue group. Theoretical and clinical implications of this finding are discussed.     

The structure of negative emotions in adolescents

This study examined the structure of negative emotions in a sample of nonclinical adolescents, using an approach that exclusively relied on child self-report. A large sample of adolescents (N = 968) completed self-report questionnaires measuring symptoms of fear, anxiety, and depression. Confirmatory factor analysis provided support for the notion that fear, anxiety, and depression are distinct yet correlated components of negative emotions. This result is in agreement with recent empirical findings and current theoretical notions on the structure of negative emotions in children and should be taken as an encouragement for researchers to develop more specific measures for assessing fear, anxiety, and depression in children.     

Correlates of Fear of Falling in Older Adults Who Have Experienced a Fall

Nearly one half of older adults who have experienced a fall report a fear of falling. The present study examined several variables in relation to fear of falling. Thirty community-dwelling older adults, over 60 years of age, who experienced a fall in the previous 12 months participated. Subjects were divided into two groups (low-fear and high-fear) and compared on scores on a Fear of Falling questionnaire, the Falls Efficacy Scale, the Philadelphia Geriatric Center Pain Intensity Scale, the Ways of Coping Checklist-Revised, the Geriatric Depression Scale-15, and the State–Trait Anxiety Inventory for Children. At least a little fear of falling was reported by 25 (83.3%) of the individuals who had fallen. Highly fearful fallers were significantly more likely to endorse higher levels of pain and general anxiety than fallers reporting low levels of fear of falling. Future directions for research were noted.     

建立新一代的精神分裂症动物模型

精神分裂症动物模型的建立与发展,是当前探索精神分裂症的神经生物学和认知心理学机制的一个关键课题。在加工-保护理论的基础上所建立起来的感觉运动门控精神分裂症模型一直受到普遍的关注。然而,高级认知活动是如何对感觉门控进行调节的这一核心问题目前还有待进一步的解决。本综述围绕着这个核心问题,系统地解释为什么惊反射前脉冲抑制成为目前最为流行的一种精神分裂症的模型,并介绍恐惧情绪学习对感觉运动门控调节作用的最新研究成果,以及阐述这种自上而下的调节作用如何受到在早期发育阶段的社会隔离的影响     

Speech anxiety and rapid emotional reactions to angry and happy facial expressions

The aim was to explore whether people high as opposed to low in speech anxiety react with a more pronounced differential facial response when exposed to angry and happy facial stimuli. High and low fear participants were selected based on their scores on a fear of public speaking questionnaire. All participants were exposed to pictures of angry and happy faces while facial electromyographic (EMG) activity from the Corrugator supercilii and the Zygomaticus major muscle regions was recorded. Skin conductance responses (SCR), heart rate (HR) and ratings were also collected. Participants high as opposed to low in speech anxiety displayed a larger differential corrugator responding, indicating a larger negative emotional reaction, between angry and happy faces. They also reacted with a larger differential zygomatic responding, indicating a larger positive emotional reaction, between happy and angry faces. Consistent with the facial reaction patterns, the high fear group rated angry faces as more unpleasant and as expressing more disgust, and further rated happy faces as more pleasant. There were no differences in SCR or HR responding between high and low speech anxiety groups. The present results support the hypothesis that people high in speech anxiety are disposed to show an exaggerated sensitivity and facial responsiveness to social stimuli.     

Fear and Disgust Responding to Heterogeneous Blood-Injection-Injury Stimuli: Distinctions from Anxiety Symptoms

Discrepancies exist in the literature regarding the unique role of disgust in Blood-Injection-Injury (BII) phobia. The present study attempts to clarify the discrepancy using a sample of analogue BII phobics (n = 40) and nonphobics (n = 40) who completed a series of questionnaires and were exposed to blood, mutilation, and injection pictures. The findings revealed that BII phobics reported greater disgust and contamination fears than nonphobics after controlling for anxious symptoms. When rating phobia-relevant pictures, BII phobics responded with greater fear and disgust than nonphobics after controlling for baseline anxiety scores. Furthermore, disgust was the dominant emotional response for BII phobics for the blood and mutilation stimuli. However, no differences were found between fear and disgust within the BII group when rating injection stimuli. The implications of these findings for better understanding the potential unique role of disgust in the etiology, maintenance, and treatment of BII phobia are discussed.

贵州汉族与少数民族中学生成就动机与成功恐惧比较研究

为了探讨汉族与少数民族中学生在成就动机和成功恐惧方面存在的差异,为教育工作者更好地了解和把握少数民族中学生心理特点,运用成就动机问卷和投射测验比较研究了977名贵州汉族与少数民族中学生的成就动机与成功恐惧。结果表明:汉族与少数民族中学生在成就动机上差异不显著,但重点中学少数民族学生在避免失败的动机上显著高于重点中学汉族学生;男、女中学生均存在成功恐惧,少数民族城市中学生的成功恐惧显著高于汉族城市中学生;少数民族中学生在事业恐惧方面显著高于汉族中学生;成就动机与成功恐惧无显著相关。