阈下奖励调节认知控制的权衡

本研究采用奖励版的AX-CPT任务, 通过控制奖励线索和反馈的呈现方式, 设置出基线、阈上奖励、阈下奖励三种条件, 考察习得的奖励联结和奖励动机能否以潜意识的方式影响认知任务的表现和认知控制的权衡。结果显示：奖励线索只在阈上呈现时提高AX序列的任务表现; 与基线条件相比, 阈上和阈下奖励条件下认知控制的权衡均偏向主动性控制, 且这种偏向在两者间无显著差异。这表明习得的阈下奖励线索可以调节认知控制的权衡, 使被试像阈上奖励时那样偏向主动性控制。     

主管威权领导与下属前瞻行为：一个被中介的调节模型构建与检验

采用214份主管-下属配对调查数据, 考察了威权领导这一华人企业组织中特有的领导方式对下属前瞻行为的影响, 尤其是检验了下属对领导者信任的中介作用与权威主义和集体主义这两种传统价值取向的调节作用。层次回归分析结果表明：(1)威权领导与下属的前瞻行为呈显著负相关; (2)对领导者的信任在威权领导与下属前瞻行为之间起完全中介作用; (3)下属权威主义取向对威权领导与下属对领导者信任和前瞻行为之间的负向关系均具有显著的弱化效应, 并且下属对领导者的信任完全中介了威权领导与下属权威主义取向之间的交互作用对前瞻行为的影响; (4)下属集体主义取向对威权领导与下属对领导者的信任之间的负向关系具有显著的增强效应。     

Components of disinhibition (vs. constraint) differentially predict aggression and alcohol use

Disinhibition (vs. Constraint; DvC), which has been shown to represent a central aspect of the externalizing domain, consists of several correlated but distinguishable underlying traits, which may have different patterns of association with various externalizing indicators. In a sample of 18‐ to 19‐year old undergraduate students (N = 430; 71.1% female), we examined the specificity and generality of the association between lower order components of DvC and both aggression and alcohol use, externalizing‐related behavioural constructs that have well‐established links to DvC. All three components of DvC—including Disagreeableness, low Self‐Control and low Accomplishment—were associated independently with Reactive Aggression, but only Disagreeableness was correlated significantly with Proactive Aggression. Also, only low Self‐Control was associated with alcohol use. Thus, aggression was broadly associated with components of DvC—although much more strongly with the Disagreeableness domain—whereas alcohol use was specifically correlated with low Self‐Control. These results suggest that lower order components of DvC have distinct patterns of associations with externalizing‐related outcomes. Copyright © 2011 John Wiley & Sons, Ltd.     

大学生主动性人格、职业决策自我效能感与职业生涯探索的关系

该研究以一所综合类大学的305名大学生为被试, 采用问卷法考察了大学生主动性人格、职业决策自我效能感与职业生涯探索的关系。结果表明:(1)大学生的主动性人格与职业决策自我效能感、职业生涯探索的各维度呈显著正相关;(2)大学生的主动性人格显著正向预测其职业生涯探索;(3)职业决策自我效能感在主动性人格对职业生涯探索的影响中起中介作用。其中, 自我评价、制定计划在主动性人格与环境探索的关系间起完全中介作用;自我评价、收集信息和选择目标在主动性人格与自我探索的关系间起完全中介作用;自我评价和收集信息在主动性人格与目的探索的关系间起部分中介作用;自我评价和制定计划在主动性人格与信息探索的关系间起部分中介的作用。     

主动性人格与员工行为的关系：政治技能视角下有中介的调节模型

本研究通过两时点纵向问卷调查,探讨主动性人格与组织公民行为、任务绩效之间的关系,考察主动社会化行为在其中的中介作用,以及政治技能的调节作用。结果表明：（1）主动社会化行为在主动性人格和组织公民行为、任务绩效之间起中介作用;（2）政治技能对主动社会化行为在主动性人格和组织公民行为、任务绩效之间的中介效应起调节作用：当政治技能水平上升,主动性人格通过主动社会化行为对组织公民行为及任务绩效的预测更加明显。     

主动性人格与员工行为的关系：政治技能视角下有中介的调节模型

本研究通过两时点纵向问卷调查,探讨主动性人格与组织公民行为、任务绩效之间的关系,考察主动社会化行为在其中的中介作用,以及政治技能的调节作用。结果表明：（1）主动社会化行为在主动性人格和组织公民行为、任务绩效之间起中介作用;（2）政治技能对主动社会化行为在主动性人格和组织公民行为、任务绩效之间的中介效应起调节作用：当政治技能水平上升,主动性人格通过主动社会化行为对组织公民行为及任务绩效的预测更加明显。     

Two types of serial dependence in visual working memory

Stimulus representations in working memory depend on memory traces of past stimuli both from previous trials and from the current trial. However, it is unclear whether the same or different mechanisms underlie this serial dependence across and within trials. We directly contrasted estimates of bias for pairs of immediately successive stimuli across and within trials. In each trial, participants memorized two consecutive motion direction stimuli (S1 and S2) and after a short delay were cued to report one of them. We found serial dependence across trials: The current S1 was attracted towards the preceding S2 when the latter had been cued for report. In contrast, within the same trial S2 was repulsed from S1. In addition, repulsion within a trial occurred for a broader range of motion direction differences between stimuli than attraction across trials. A second experiment in which 25% of trials did not require a response demonstrated that across‐trial attraction did not depend on whether the previous S2 actually had to be reported. Our findings provide evidence for two types of serial dependence operating across and within trials. They support the notion of different mechanisms integrating or segregating current from similar past memory contents depending on their task relevance.     

Attention-deficit/hyperactivity disorder and callous-unemotional traits as moderators of conduct problems when examining impairment and aggression in elementary school children

Examined whether attention-deficit/hyperactivity disorder (ADHD) and callous-unemotional (CU) traits moderate the association between conduct problems (CPs) and impairment and aggression. Participants were 214 children who were rated by their elementary school classroom teachers. Results indicated that the association between CP and impairment and aggressive outcomes is almost always moderated by ADHD and/or CU. Moreover, in many instances, the association between CP and outcomes was moderated by both ADHD and CU such that the moderating effects of CU on CP were more pronounced at lower levels of ADHD. Results are discussed with respect to developmental taxonomies and trajectories of the disruptive behavior disorders.     

Genetic and environmental stability differs in reactive and proactive aggression

The aim of this study was to examine stability and change in genetic and environmental influences on reactive (impulsive and affective) and proactive (planned and instrumental) aggression from childhood to early adolescence. The sample was drawn from an ongoing longitudinal twin study of risk factors for antisocial behavior at the University of Southern California (USC). The twins were measured on two occasions: ages 9–10 years (N=1,241) and 11–14 years (N=874). Reactive and proactive aggressive behaviors were rated by parents. The stability in reactive aggression was due to genetic and nonshared environmental influences, whereas the continuity in proactive aggression was primarily genetically mediated. Change in both reactive and proactive aggression between the two occasions was mainly explained by nonshared environmental influences, although some evidence for new genetic variance at the second occasion was found for both forms of aggression. These results suggest that proactive and reactive aggression differ in their genetic and environmental stability, and provide further evidence for some distinction between reactive and proactive forms of aggression. Aggr. Behav. 35:437–452, 2009. © 2009 Wiley‐Liss, Inc.     

Discrimination training facilitates pigeons' performance on one-trial-per-day delayed matching of key location

Six pigeons were tested on a one-trial-per-day variant of delayed matching of key location. In one condition, a trial began with the illumination of a pair of quasi-randomly selected pecking keys in a large 10-key test box. Pigeons' pecks to one key (the sample) were reinforced with 8-second access to grain on a variable-interval 30-second schedule, whereas pecks to the other key (the distractor) had no scheduled consequences. In the second condition, the nonreinforced distractor was not presented. In both conditions, subjects were removed from the apparatus after 15 minutes and placed in a holding cage. Subjects were subsequently replaced in the box after a delay (retention interval) of 30 seconds and were reexposed to the illuminated sample and distractor keys for 1 minute. If a pigeon made more pecks to the sample during this interval, the distractor was extinguished and subsequent pecks to the sample were reinforced on the previous schedule for an additional 15 minutes. If, however, a pigeon made more pecks to the distractor, both keys were extinguished and the subject was returned to its home cage. For all subjects, matching-to-sample accuracy was higher in the first condition. In a second experiment, the retention interval was increased to 5, 15, and 30 minutes, and then to 1, 2, 4, 8, 12, and 24 hours. Most subjects remembered the correct key location for up to 4 hours, and in one case, up to 24 hours, demonstrating a spatial-memory proficiency far better than previously reported in this species on delayed matching tasks. The results are discussed in terms of the commonly held distinction between working and reference memory.