对性别助长假设的初步验证:在场观众的性别影响作业效绩吗?

为了检验金盛华于1989年提出的“性别助长假设”,采用现场实验探讨观众魅力对性别助长效应的干涉作用。32个中专学生(男女各半)在4种观众条件下测试BAH时间。结果表明,观众条件对女性被试的作业效绩无影响;而高魅力异性观众的在场能助长男性被试的效绩,而低魅力的异性观众在场会削弱其效绩。因此,性别助长效应受到诸多因素(如被试的性别、观众的魅力)的干涉,男性易出现助长现象,且高魅力的异性观众才对作业效绩具有助长作用。     

重解动作理解的“戈尔迪之结”:镜像神经元祛魅

"动作理解"一直被视为镜像神经元功能最为保守的假设,同时也是证据链最为强健的领域之一,但其概念内涵却始终如同古希腊神话中的"戈尔迪之结"一般没有得到厘清。目前,动作理解的紧缩解释正在面临严峻的挑战。来自实验室检验与哲学拷问的证据倾向于认为,镜像神经元活动构成动作理解的观点是一种"循环论证",前者至多只能算作产生动作理解的附带原因,而不是必要与充分原因。将广义的动作分成运动、运动动作与运动动作链可以有效地澄清实现理解不同层次的动作需要具备哪些条件。回应质疑并为辩护自身立场指明前进方向,是重解动作理解"戈尔迪之结"的起点,将对镜像神经元的科学祛魅产生奠基性的影响。     

集体记忆中的协作促进及其原因

摘 要 协作促进是指先前协作提取的经验对后续的个人提取具有积极影响。为了探讨协作促进产生的基本条件及其原因,本研究通过两个实验分别考察了小组的人数和回忆方式对协作促进的影响以及他人再现和交叉线索对协作促进的贡献。结果表明：无论小组的大小为2人组、3人组还是4人组,回忆方式为轮流回忆还是自由回忆均能产生协作促进,且轮流回忆的协作促进量要高于自由回忆的协作促进量;他人再现对协作促进的贡献大于交叉线索。这说明协作促进是一个稳定的现象,其主要原因是他人再现的作用。     

自我监控性作为性别助长效应的干涉变量

采用双手调节器操作任务进一步验证“性别助长”假设。20个自我监控者与20个我行我素者(男女各半)分别按抵消顺序接受两种实验处理：男性观众和女性观众。结果表明,异性观众可以助长男性被试的操作速度,而削弱女性被试的操作速度;对于作业效绩也存在着同样的交互作用;自我监控性是性别助长效应的一个重要干涉变量,男自我监控者表现出明显的异性助长,女自我监控者表现出明显的异性抑制,而我行我素者没有表现出明显的观众效应。由于自我监控性对相应的异性效应有一种放大作用,可知性别助长效应的基础是以印象管理动机为主。     

Testing enhances both encoding and retrieval for both tested and untested items

In forward testing effects, taking a test enhances memory for subsequently studied material. These effects have been observed for previously studied and tested items, a potentially item-specific testing effect, and newly studied untested items, a purely generalized testing effect. We directly compared item-specific and generalized forward testing effects using procedures to separate testing benefits due to encoding versus retrieval. Participants studied two lists of Swahili–English word pairs, with the second study list containing “new” pairs intermixed with the previously studied “old” pairs. Participants completed a review phase in which they took a cued-recall test on only the “old” pairs or restudied them. In Experiments 1a, 1b, and 2, the review phase was given either before or after the second study list. Testing benefited memory to the same degree for both “new” and “old” pairs, suggesting that there were no pair-specific benefits of testing. The larger benefit from testing when review was given before rather than after the second study list suggests that the memory enhancement was due to both testing-enhanced encoding and testing-enhanced retrieval. To better equate generalized testing effects for “new” and “old” pairs, Experiment 3 intermixed them in the review phase. A statistically significant pair-specific testing effect for “old” items was now observed. Overall, these results show that forward testing effects are due to both testing-enhanced encoding and retrieval effects and that direct, pair-specific forward testing benefits are considerably smaller than indirect, generalized forward testing benefits.     

Summation effects in human learning: evidence from patterning discriminations in goal-tracking

Participants in two human goal-tracking experiments were simultaneously trained with negative patterning (NP) and positive patterning (PP) discriminations (A+, B+, AB–, C–, D–, CD+). Both elemental and configural models of associative learning predict a PP advantage, such that NP is solved less readily than PP. However, elemental models like the unique cue approach additionally predict responding in AB– trials to be initially stronger than that in A+ and B+ trials due to summation of associative strength. Both experiments revealed a PP advantage and a strong summation effect in AB– trials in the first half of the experiments, irrespective of whether the same US was used for both discriminations (Experiment 1) or two different USs (Experiment 2). We discuss that the correct predictions of the unique cue approach are based on its assumptions of non-normalized and context-independent stimulus processing rather than elemental processing per se.     

The object of my protection: Shielding fundamental motives from the implicit motivational influence of others

Goal shielding theory suggests that one's focal pursuits automatically inhibit the activation of interfering goals (Shah, Friedman, & Kruglanski, 2002); however, it is not entirely clear how individuals come to identify what constitutes “interfering”. Three studies examine how this identification process may be guided by fundamental social motives that individuals possess, particularly in social situations wherein goals are primed through mere exposure to others' goal-directed behavior (“goal contagion”, Aarts, Gollwitzer, & Hassin, 2004). Participants' fundamental motives for positive self-regard (Study 1), autonomy (Study 2), and distinctiveness (Study 3) were either manipulated or measured and participants read scenarios that manipulated the goal-directed behavior of a target other. Results indicated that participants inhibited the activation of goals being primed by others when the implicit influence interfered with their fundamental motives in some way. These findings suggest that fundamental motives can guide whether individuals will catch goals from others or shield themselves from such influences.     

Brief and rare mental “breaks” keep you focused: Deactivation and reactivation of task goals preempt vigilance decrements

We newly propose that the vigilance decrement occurs because the cognitive control system fails to maintain active the goal of the vigilance task over prolonged periods of time (goal habituation). Further, we hypothesized that momentarily deactivating this goal (via a switch in tasks) would prevent the activation level of the vigilance goal from ever habituating. We asked observers to perform a visual vigilance task while maintaining digits in-memory. When observers retrieved the digits at the end of the vigilance task, their vigilance performance steeply declined over time. However, when observers were asked to sporadically recollect the digits during the vigilance task, the vigilance decrement was averted. Our results present a direct challenge to the pervasive view that vigilance decrements are due to a depletion of attentional resources and provide a tractable mechanism to prevent this insidious phenomenon in everyday life.     

Diversity in goal orientation, team reflexivity, and team performance

Although recent research highlights the role of team member goal orientation in team functioning, research has neglected the effects of diversity in goal orientation. In a laboratory study with groups working on a problem-solving task, we show that diversity in learning and performance orientation are related to decreased group performance. Moreover, we find that the effect of diversity in learning orientation is mediated by group information elaboration and the effect of diversity in performance orientation by group efficiency. In addition, we demonstrate that team reflexivity can counteract the negative effects of diversity in goal orientation. These results suggest that models of goal orientation in groups should incorporate the effects of diversity in goal orientation.