时间压力和相似性对类比推理直觉加工的影响

通过两个实验探讨了时间压力对类比推理的直觉加工的影响。实验1采用三因素混合实验设计,以48名大学生为被试,在不同时间压力条件下对不同相似性言语类比推理题进行喜好度判断和类比推理逻辑判断。实验2是在实验1的基础上用图形类比推理题代替语义类比推理题,以56名大学生为被试。结果发现:(1)时间压力下,对跨领域言语类比推理的直觉加工效应显著高于逻辑加工效应;(2)时间压力下,低难度图形类比推理题的直觉加工效应显著高于逻辑加工效应。无时间压力条件下,图形类比推理的逻辑加工效应优势明显;(3)时间压力对类比推理的直觉加工和逻辑加工均有影响     

Influence of emotional task relevancy on the temporal dynamic of attentional bias in people with high-trait anxiety

ABSTRACT

It is unknown whether high-trait anxiety (HTA) individuals show facilitated attention or impaired attentional disengagement. In the present study, we have manipulated emotion and task relevance to explore the temporal dynamic of attentional bias in an HTA group via emotional attentional blink (EAB) and emotion-induced blindness (EIB). The results showed that the attentional blink effect was greater in the negative compared to neutral condition. When emotional stimulation was task-irrelevant at lag6, this enhanced effect was only present for the HTA group, indicating impaired attentional disengagement. However, when emotional stimulation was task-relevant at lag4, the enhanced attentional blink was absent for HTA but still present for LTA until lag8, suggesting facilitated attention for HTA. Thus, task relevancy of emotional distractor appears to influence attention biases in HTA individuals. In addition, individual characteristics modulate the magnitude and time window of the attentional blink in the context of EIB and EAB tasks.     

因果判断中经验与共变信息的结合及各自作用

研究使用相继呈现信息的方法控制了被试获得信息的顺序,从而将经验和共变信息在因果判断中所起到的作用分离了出来。结果表明：（1）个体综合两种信息进行因果判断的过程既不是简单的相加操作,也不是使用经验信息控制共变信息的进入,而是先判断经验信息,再判断共变信息是否与之一致,当出现不一致的情况时又重新考虑经验信息。（2）在改变先前判断的过程中,经验信息所起的作用更大,其中又以当其证明待判断原因不可信时所产生的改变更大。     

胚胎期糖皮质激素系统在光照改善小鸡记忆中的作用

该研究采用胚胎期药物注射法和小鸡一次性被动回避反应行为模型,观察了皮质酮和地塞米松对暗孵化小鸡记忆的影响,以及两类皮质激素受体颉颃剂RU-486和Spironolactone对光照以及皮质酮效应的阻断作用。结果表明,糖皮质激素可明显改善暗孵化小鸡的记忆;两类受体颉颃剂均阻断了光照和皮质酮对暗孵化小鸡记忆的改善作用,但糖皮质激素受体对小鸡记忆的作用是特异性的,盐皮质激素主要通过对小鸡的基本状态的改变来影响记忆活动。因此,糖皮质激素及其受体系统参与了光照对小鸡记忆的作用过程。     

糖皮质激素与记忆

对近年来有关糖皮质激素对记忆的作用的研究进行了小结。由于糖皮质激素的受体广泛分布在与记忆行为相关的脑区,而且对相应的神经元可塑性进行调节,因此糖皮质激素对个体的记忆的形成有着重要的影响。     

影响大学生自我监控能力的情境因素的实验研究

采用角色表演法,通过实验考察了冲突中影响大学生自我监控能力的情境因素。实验研究了冲突对方说话的态度对自我监控的影响。通过比较高、低自我监控者在两种态度(礼貌或粗鲁)对待下策略的使用,证实冲突中对方的说话态度显著影响了大学生在冲突中的自我监控行为：在礼貌说话态度下,高、低自我监控的大学生间在综合策略、分散策略和敌对策略的使用上有显著差异,而在粗鲁的说话态度下,两者无显著差异。     

Susceptibility to motion sickness induced by optokinetic rotation and self-rotation by walking around a vertical pole.

31 subjects viewed an optokinetic rotating drum for 12 min. in one session and self-rotated by walking quickly around a vertical pole with eyes closed while alternately flexing and extending the neck in another session. The self-rotation session contained 6 trials (3 clockwise and 3 counterclockwise rotations). Each trial contained 20 cycles of self-rotations. Self-reported ratings of nausea and symptoms of motion sickness were obtained for each session. The subjects developed symptoms of nausea, sweating, dizziness, headache, drowsiness, and changes in salivation in both drum rotation and self-rotation sessions. However, the subjects reported higher ratings of nausea in the session of optokinetic rotation than in the session of self-rotation around a vertical pole. These results indicated that both optokinetic rotation and self-rotation with eyes closed while alternately flexing and extending the neck are effective means of inducing nausea and motion sickness.     

社会信息加工领域中的情境模型理论

自Wyer和Srull把情境模型理论引入社会信息加工领域以来,情境模型理论成了社会信息加工研究的热点,其自身结构和加工机制也得到研究者的不断完善。该文简要介绍了情境模型理论的内容、结构及其基本假设。即情境模型代表人们在社会信息加工过程中形成的关于具体事件和情节的知识,并且通常在社会信息的理解过程中自动建立。这种模式一旦建立,就为理解新信息及作出相应的判断提供基础。情境模型包括三种基本信息:时空框架、实体集合及实体之间的各种相互关系。认为人们在理解信息的过程中至少需要建构5个维度,即:(1)空间,(2)时间,(3)实体,(4)因果,(5)目的。在此基础上,文章讨论了情境模型理论的未来研究方向。     

内容类别与表征方式对判定THOG问题的影响

用两因素完全随机实验方法研究了“内容类别”与“表征方式”两个因素对被试判定THOG过程中的作用。结果表明 ,被试正确解决THOG问题的成绩与用抽象内容或用具体内容来构建问题无显著差异 ,但主词是否一致的不同表征方式对被试解决这类问题的成绩有显著影响     

Behavioral and brain wave evidence for automatic processing of orthographically regular letter strings

Evidence for the automatic processing of nonword letter strings was sought in subjects who performed two different perceptual tasks. Twelve subjects detected valid words. Twelve other subjects detected Gestalt patterns that contained no letters. The targets and two types of nonword letter strings were interspersed in a stream of nonletter images. Behavioral data showed significant effects of orthographic regularity of letter strings in the group that detected words, but not in the group that detected Gestalt patterns. Brain-wave responses showed the effect of orthographic regularity in both groups. The responses were significantly larger for regular than for irregular strings. This showed that brain waves can be used to study the operation of reading processes in subjects who are performing a task that does not require reading ability.