储存负荷量对内隐记忆效果的影响

为了解储存负荷量对内隐记忆效果的影响而进行本实验研究。实验采用Jacoby过程分离程序范式,用英文辅音字母组成无意义字母串作记忆实验材料,用彼德生的减数干扰分心技术。结果发现：储存负荷量对内隐记忆效果的影响与外显记忆的不同,随着储存负荷量的增加,内隐记忆即自动性提取的作用先下降,后又有所上升,最后渐趋稳定,在负荷量为6以后保持在一个相当稳定的水平。本实验对内隐记忆研究具有参考价值。     

Would situational stress be harmful for anyone? The influence of situational factors and trait empathy on women’s response to infant crying

Individual differences in responsiveness toward infant crying are well understood. Little research, however, has examined the effects of situational risk factors (e.g., social stress, cognitive load) and possible interactions between situational and dispositional factors on response toward infant crying. This study examined if trait empathy (conceptualized as empathic concern; EC, and personal distress; PD) moderate situational factors’ relationship with people’s intentions in response to infant crying. Social stress was manipulated using the Trier Social Stress Test. Cognitive load was manipulated by requiring participants to keep syllable-strings of either two or eight syllables in mind while listening to an infant crying. Participants responded to question items examining their caregiving and neglect intentions in response to the crying stimulus. Multilevel regression analyses demonstrated that trait empathy (empathic concern in particular) was strongly associated with neglect intention under cognitive load. Participants with high EC showed strong neglect intention with increasing cognitive load. Furthermore, results also showed that social stress increased neglect intentions and reduced care intentions; these effects were more remarkable among participants with both low EC and low PD. These results suggest that dispositional factors moderate situational factors’ effect on response to infant crying.     

工作记忆与知觉负载对工作记忆表征引导注意的调节

本研究采用4个眼动实验探讨不同知觉负载条件下的视觉搜索任务中工作记忆负载对基于工作记忆表征的注意引导效应的影响。实验1和实验3采用低知觉负载的视觉搜索任务,结果在视觉工作记忆负载为1和2时观察到了显著的注意引导效应,但当负载增加到4时注意引导效应消失了;实验2和实验4采用高知觉负载的视觉搜索任务,结果发现注意引导效应在工作记忆负载增加到2时就已经消失了。上述结果表明:工作记忆负载和知觉负载都能够通过调控认知资源的方式来影响工作记忆表征对注意的引导,当认知资源充足时,工作记忆能够同时保持多个记忆表征对视觉注意的引导。     

State orientation and memory load impair prospective memory performance in older compared to younger persons

A modified event-based paradigm of prospective memory was applied to investigate intention initiation in older and younger participants under high versus low memory load (subsequent episodic word recall vs. recognition). State versus action orientation, a personality dimension related to intention enactment, was also measured. State-oriented persons show a superiority effect for the storage of intentions in an explicit format but have a paradoxical deficit in their actual enactment. We predicted an interaction between aging, personality, and memory load, with longer intention-initiation latencies and higher omission rates for older state-oriented participants under high memory load. Results were consistent with predictions and are interpreted according to current personality and prospective memory models of aging.     

额叶参与执行控制的ERP负荷效应

为了检测执行控制的激活脑区及其时间进程,测量了14名健康成人被试执行汉字1/2/3-back任务时的64导事件相关电位(ERPs)。1/2/3-back任务均在头皮前部诱发N360,从刺激消失250ms起至600ms左右结束,其波幅表现出随记忆负荷而增高的负荷效应。3-back任务N360源分析发现位于额叶等部位的高密度电流分布和偶极子,表明左右半球均参与执行控制,但左侧额叶具有相对的半球优势。     

学习材料的背景颜色对认知负荷及学习的影响

本研究采用2×2的多因素混合实验设计,探讨了物理学习环境之一的学习材料背景颜色对认知负荷及学习的影响。结果发现：（1）背景颜色在对认知负荷的影响上与任务类型产生交互作用,在解决创造性问题时,暖色调（如红色）背景下的认知负荷显著高于冷色调（如蓝色）。（2）从学习成绩上看,暖色调（如红色）更有利于记忆测试问题的解决,冷色调（如蓝色）更有利于创造性问题的解决。（3）认知负荷与任务绩效呈一定程度相关。     

Stroop-like effects in a new-code learning task: A cognitive load theory perspective

To determine whether and how learning is biased by competing task-irrelevant information that creates extraneous cognitive load, we assessed the efficiency of university students with a learning paradigm in two experiments. The paradigm asked participants to learn associations between eight words and eight digits. We manipulated congruity of the digits’ ink colour with the words’ semantics. In Experiment 1 word stimuli were colour words (e.g., blue, yellow) and in Experiment 2 colour-related word concepts (e.g., sky, banana). Marked benefits and costs on learning due to variation in extraneous cognitive load originating from processing task-irrelevant information were evident. Implications for cognitive load theory and schooling are discussed.     

被洞悉错觉中的锚定及其调节效应

根据锚定及其调节效应的理论解释,通过两个情境实验对被洞悉错觉产生过程中的锚定及其调节效应进行研究。研究表明,在紧张、愉快情绪状态下个体均倾向高估他人对自己内部状态的洞悉水平,即产生被洞悉错觉。内心感受强度,即锚定值对被洞悉错觉的产生有重要影响;而有无认知负荷,即认知状态在被洞悉错觉产生过程中与锚定值的调节水平无关,对被洞悉错觉是否发生亦没有明显作用。     

Physiological aspects of flow experiences: Skills-demand-compatibility effects on heart rate variability and salivary cortisol

This research addresses flow theory according to which the compatibility of skills and task demands involved in an activity elicits flow experiences that render the activity intrinsically rewarding. Departing from correlational research, we applied experimental paradigms designed to test the impact of a skills-demands-compatibility on the emergence of flow in computerized tasks. On the one hand, the results from self-reports support the balance hypothesis and indicate that skills-demands-compatibility results in a pleasurable flow experience. On the other hand, the results also indicate that skills-demands-compatibility resulted in (a) reduced heart rate variability indicating enhanced mental workload, and (b) stress as indicated by relatively high levels of salivary cortisol. These results indicate that flow experiences combine subjectively positive elements with physiological elements reflecting strainful tension and mental load.     

“Meaningful” social inferences: Effects of implicit theories on inferential processes

Perceivers’ shared theories about the social world have long featured prominently in social inference research. Here, we investigate how fundamental differences in such theories influence basic inferential processes. Past work has typically shown that integrating multiple interpretations of behavior during social inference requires cognitive resources. However, three studies that measured or manipulated people’s beliefs about the stable versus dynamic nature of human attributes (i.e., their entity vs. incremental theory, respectively) qualify these past findings. Results revealed that, when interpreting others’ actions, perceivers’ theories selectively facilitate the consideration of interpretations that are especially theory-relevant. While experiencing cognitive load, entity theorists continued to incorporate information about stable dispositions (but not about dynamic social situations) in their social inferences, whereas incremental theorists continued to incorporate information about dynamic social situations (but not about stable traits). Implications of these results for how perceivers find meaning in behavior are discussed.