熟练和非熟练中英双语者不同认知控制成分的比较

使用面孔任务考察熟练中英双语者和非熟练中英双语者在不同认知控制成分上的差异。被试为60名大学生。结果表明,熟练中英双语者在抑制控制和转换上的反应时消耗量均显著小于非熟练中英双语者,但在反应抑制上的反应时消耗量与非熟练中英双语者没有显著差异。该结果说明,二语熟练程度越高,中英双语者的认知灵活性(转换)和抑制控制(干扰控制)能力就越强;但是二语熟练程度对反应抑制能力没有明显的影响。由此可以推测,二语学习能促进中英双语者的认知灵活性(转换)和抑制控制(干扰控制)能力,但是,二语学习对中英双语者的反应抑制能力没有明显的促进作用。     

The role of thought suppression in building mental blocks

This research examined the role of thought suppression in the formation of mental blocks. In Experiment 1, participants were asked to generate a series of creative associates for two target words after initially suppressing a word that was semantically related to one of the two target words. Participants produced fewer responses, and experienced a greater sensation of being mentally blocked, when attempting to produce associates for the target word that was semantically related to the suppressed word. In Experiment 2, participants either thought about or suppressed a series of words prior to completing a word fragment completion task. Each word either corresponded exactly to one of the word fragment solutions (target primes) or resembled one of the solutions but was slightly different in its orthographic properties (negative primes). Participants performed most poorly on the items for which they had initially suppressed negative primes.     

Thought suppression enhances memory bias for threat material

The current study examined the impact of thought suppression on indices of anxiety, including memory indices (implicit and explicit memory biases) and physiological indices (heart rate). The participants, 81 undergraduates scoring in the top quartile of a self-report measure of trait anxiety, were randomly assigned to one of three experimental groups: thought suppression (TS), thought concentration (TC), and thought wandering (TW). The TC and TW groups were included to control for the effects of effortful processing and exposure to stimuli, respectively. One block of threat words and one block of neutral words were presented under conditions of cognitive load, and participants' physiological responses and memory biases were measured. The thought suppression group exhibited an enhanced overall memory bias for threat words, driven by an elevated explicit memory bias, relative to the other two groups, a result that has implications for ironic processes theory and may inform information-processing models of anxiety.     

Sneaking in through the back door: How category-based stereotype suppression leads to rebound in feature-based effects

Given the dramatic shifts in societal norms to curb overt stereotyping and prejudice, these biases may leak out in more subtle ways than were apparent in the past. Accordingly, we examined how the suppression of stereotypes might affect post-suppression category-based stereotyping and the more subtle feature-based stereotyping. In support of our proposition, participants in the suppression condition used more feature-based, but less category-based stereotypes in their post-suppression task than participants in the control condition. Furthermore, a relation between post-suppression category-based and feature-based stereotyping existed in the suppression condition such that decreases in category-based stereotyping were associated with increases in feature-based stereotyping. Findings as a whole suggest that norms against the expression of stereotypic biases may ironically lead people to be more vulnerable to biases as a function of within-category features.     

The Mental Regulation of Autobiographical Recollection in the Aftermath of Trauma

ABSTRACT— Survivors of psychological trauma are frequently troubled by intrusive recollection of the traumatic event. We describe research showing that attempts to suppress such trauma memories can be associated with paradoxically enhanced remembering of the trauma, enhanced access to other negative personal material, and a lack of specificity in the recollection of the personal past. This suggests that attempted suppression is generally a counterproductive approach to the regulation of traumatic memories in distressed trauma survivors. Working with trauma memories, rather than suppressing them, is more adaptive.     

情绪调节在特质与情绪间中介效应模型的年龄差异

研究采用EPQ、ERQ及PANAS收集了青年、中年及老年三个年龄组共870份有效数据, 分析了认知重评和表情抑制在外倾和神经质与正负情绪之间中介效应及发展模型差异。主要结果：(1)外倾−正情绪, 神经质−负情绪之间存在高相关。(2)与青年组和老年组比, 中年组的神经质与负情绪的相关最弱。(3)三个年龄组的认知重评在神经质与负情绪之间都存在显著的中介效应, 中介效应值在中年组为最强。(4) 表情抑制在外倾与正负情绪之间显著的中介效应仅出现在中年组。研究分析, 认知重评和表情抑制是减弱特质−情绪之间密切度的有效调节机制。     

Role of context similarity in ABA, ABC, and AAB renewal paradigms: Implications for theories of renewal and for treating human phobias

Using barpress conditioned suppression, we studied the renewal of conditioned fear in rats, an animal model for the relapse of human fears and phobias. We demonstrated ABA renewal when the only differences between Contexts A and B included (1) their odor, (2) their location (i.e., side of room), and (3) unintended differences between copies of the same box at the two sites. Removing either the odor or location cues abolished the renewal effect. We then directly compared the effects of ABA and AAB procedures under two levels of context similarity. Although AAB renewal occurred, ABA renewal was stronger. Adding multiple context distinctions to the three listed above did not significantly enhance either form of renewal. Finally, we directly compared the strengths of AAB, ABC, and ABA renewal. AAB renewal, though again significant, was weaker than ABA and ABC renewal, which did not differ significantly. Fear renewal (relapse) can thus be reduced by extinguishing the fear in the acquisition context, regardless of the nature of the test context.     

王家台《归藏》与《穆天子传》

1993年3月,湖北江陵王家台15号秦墓中出土了《归藏》。王家台《归藏》举世瞩目,一些学者认为它就是商易。本文根据王家台《归藏》内容多出《穆天子传》本事的事实,认定王家台《归藏》必成书于《穆天子传》之后,属战国作品。本文还进一步分析了学术史上的相关问题,以为类似王家台《归藏》的内容很可能在西晋汲冢所出书中就已经发现。     

Semantic and subword priming during binocular suppression

In general, stimuli that are familiar and recognizable have an advantage of predominance during binocular rivalry. Recent research has demonstrated that familiar and recognizable stimuli such as upright faces and words in a native language could break interocular suppression faster than their matched controls. In this study, a visible word prime was presented binocularly then replaced by a high-contrast dynamic noise pattern presented to one eye and either a semantically related or unrelated word was introduced to the other eye. We measured how long it took for target words to break from suppression. To investigate word-parts priming, a second experiment also included word pairs that had overlapping subword fragments. Results from both experiments consistently show that semantically related words and words that shared subword fragments were faster to gain dominance compared to unrelated words, suggesting that words, even when interocularly suppressed and invisible, can benefit from semantic and subword priming.     

Extensive extinction in multiple contexts eliminates the renewal of conditioned fear in rats

Two studies examined whether nonreinforcement of a stimulus in multiple contexts, instead of a single context, would decrease renewal of conditioned fear in rats (as assessed by conditioned suppression of lever pressing). In Experiment 1, renewal was measured after 36 nonreinforced CS trials delivered during six extinction sessions in a single context or two extinction sessions in each of three different contexts. The number of extinction contexts did not have an effect on renewal. In Experiment 2, groups received either 36 or 144 nonreinforced CS trials during six or twenty-four extinction sessions in a single context or three different contexts. Again, renewal was not influenced by the number of extinction contexts when only 36 trials were given. However, when 144 trials were used, renewal was completely eliminated when extinction was divided between 3 contexts, but was not weakened when the sessions took place in a single context. The results suggest that the use of multiple treatment settings in exposure-based therapies is only likely to reduce relapse if a sufficient number of sessions are provided in each of the treatment settings.