任务转换条件下对特征的并行搜索

采用双任务范式,以两个实验探讨了任务设置与刺激特征的匹配程度对特征搜索方式的影响。要求被试首先辨认数字序列中包含的字母,随后完成特征搜索任务。在实验一中特征搜索任务是检测同时呈现的多个灰色圆点(干扰子）中是否有红色圆点(目标）出现。在实验二中,以多种不同颜色的圆点代替实验一中的灰色干扰子。结果发现：在特征搜索主要由自下而上的信息或自上而下的信息引导的两种条件下,任务设置与刺激特征的匹配程度均不影响特征搜索方式,特征搜索仍以并行方式进行。据上述结果笔者推测,在任务设置与刺激特征不匹配的条件下,视觉加工系统首先调整任务设置使二者相匹配,随后进行高效率的并行搜索,而非在二者不匹配的条件下进行低效率的系列搜索。     

大学生的恋爱宽恕:问卷编制与特点研究

为编制大学生恋爱宽恕问卷并对大学生恋爱宽恕的特点进行研究,采用自编初始问卷对上海某高校的213名在校大学生进行预测,利用完善后的正式问卷对上海和南京两地的556名在校大学生展开正式施测,通过项目分析、探索性因素分析、相关分析、信效度分析等方法对数据进行处理,并利用编制的问卷对大学生的恋爱宽恕特点进行研究。结果显示:(1)编制的《大学生恋爱宽恕问卷》包含报复、回避、宽恕和消极沉思四个维度,可以解释方差总变异的69.08%;(2)内部一致性系数、分半信度、重测信度、结构效度和外部效度均显示编制的问卷具有良好的信效度指标;(3)编制的问卷能够较好地契合宽恕的定义;(4)大学生恋爱宽恕存在性别差异,其中女大学生的宽恕倾向高于男生;(5)面对恋爱中的伤害,中国大学生更多地采用消极深思的应对方式,而较少采用报复的方式。可见,大学生恋爱宽恕问卷信效度均达到了测量学的要求,中国大学生的恋爱宽恕与西方有所不同。     

An evaluation of lineup presentation,weapon presence,and a distinctive feature using ROC analysis

We conducted an experiment (N = 2675) including both laboratory and online participants to test hypotheses regarding important system and estimator variables for eyewitness identification. Simultaneous lineups were compared to sequential lineups with the suspect presented early versus late because there is evidence that suspect position could be an important factor determining a simultaneous versus sequential advantage in guilty-innocent suspect discriminability. We also manipulated whether or not the perpetrator held a weapon or had a distinctive feature on his face, to re-evaluate recent evidence that these factors interact. Overall, the simultaneous lineup yielded higher discriminability than the sequential lineup, and there was no effect of sequential position. Discriminability was higher when the perpetrator had no weapon, but only when no distinctive feature was present. We conclude with a discussion of the importance of exploring interactions between system and estimator variables using Receiver Operating Characteristic (ROC) analysis.     

Is it relevant? Influence of trial manipulations of prospective memory context on task interference

The effects of blocked versus mixed presentation were tested on visual feature binding, assuming that blocked presentation enhances focused attention, whilst mixed presentation recruits extra attentional resources for intratrial as well as intertrial processing. The contextual interference effect suggests that although performance due to mixed presentation is either similar or worse than blocked presentation when tested immediately, it is better when tested after an interval. We explored whether this robust empirical effect, common in psychomotor performance, would be evident in visual feature binding. Stimuli were conjunctions of shape, colour, and location. Study–test intervals from 0 to 2,500 ms were used with a swap detection task. In Experiments 1A and 1B, participants ignored locations to detect shape–colour bindings. In Experiments 2A and 2B, they ignored shapes to detect colour–location binding. In Experiments 3A and 3B, they ignored colours to detect shape–location bindings. Whilst Experiments 1A, 2A, and 3A used blocked presentation, Experiments 1B, 2B, and 3B used mixed presentation of study–test intervals. The results of these experiments and a replication experiment using a within-subjects design showed that the contextual interference effect appeared when spatial attention was engaged, but not when attention was object based.     

Does maintaining bindings in visual working memory require more attention than maintaining features?

ABSTRACT

Whether more attention is required for maintaining bindings than maintaining features in visual working memory (VWM) remains an open question. If maintaining bindings in VWM does not require more attention than maintaining features, is it related to the stability of binding representations? In this study, we explored whether maintaining bindings requires more attention than maintaining features for similar and dissimilar objects by inserting a feature report task into the maintenance phase of VWM in Experiments 1 and 2. We also investigated whether the effect of similarity on the attentional requirement for maintaining bindings and features is due to the stability of VWM representations by inserting a suffix during the maintenance phase of VWM in Experiment 3. The results showed that when object-based attention was consumed, bindings were more impaired than features for dissimilar objects but not for similar objects. We also found that the bindings of similar objects were less interfered by the suffix than those of dissimilar objects. Our findings suggest that maintaining bindings does not require more attention than maintaining features when the binding representations are stable in VWM and similarity improves the stability of binding representations.     

两种视觉特征提示对儿童错误记忆发展的影响

采用DRM研究范式,实验一使用示意图提示,探讨特异性视觉特征对于8岁、10岁和12岁儿童错误记忆的影响及其随年龄而产生的变化;实验二使用位置提示,探讨非特异性视觉特征对8岁、10岁和12岁儿童错误记忆的影响及其随年龄增长而产生的变化。实验结果说明:(1)特异性视觉特征提示会显著减少错误记忆,而非特异性视觉提示则会显著增加错误记忆。(2)8～12岁儿童错误记忆随着年龄的增长而增长,这可能是由于儿童随年龄增长不断地发展其形成要义痕迹表征和要义连接的能力所致。(3)特异性视觉特征提示对8岁儿童错误记忆的影响不显著,对10岁和12岁儿童有显著削弱作用,但这种影响在10岁和12岁儿童间没有显著性地增长。(4)非特异性视觉特征提示对8岁儿童错误记忆不产生显著影响,对10岁和12岁儿童有显著的增强作用,且这种影响从8岁至12岁呈显著性增长。     

归类不确定情境下特征预测的理性模型研究

探讨了Bayesian规则计算公式的具体含义,进而考察了归类不确定情境下的特征预测是否符合Bayesian规则.包括2个实验:实验1探讨保持类别内目标成员中预测特征的比例不变,而改变类别内所有成员中预测特征的比例是否影响特征预测.实验2探讨保持类别内目标成员中预测特征的比例不变,进一步扩大类别内所有成员中预测特征比例的差异是否会影响特征预测.结果表明: 类别内目标成员中预测特征的比例影响特征预测,而类别内所有成员中预测特征的比例不影响特征预测.据此,本研究认为,Murphy对Bayesian规则计算公式的含义理解有偏差,其由此提出的"单类说"值得商榷.     

不同学习方式下归类不确定时的特征推理

采用学习-迁移模式, 探讨了同时学习和继时学习两种方式下归类不确定时的特征推理。共包括2个实验, 其中实验1探讨了固定学习轮次的情况, 实验2探讨了固定学习正确率的情况。实验结果表明：同时呈现类别要素的同时学习方式下, 被试习得序列式的单类别表征(原型表征), 在归类不确定时的特征推理中按照“单类的Bayesian规则”进行特征推理, 即P(j\F) =P(k\F)·P(j\k); 相继呈现类别要素的继时学习方式下, 被试习得并列式的多类别表征, 在归类不确定时的特征推理中按照“理性模型”进行推理, 即 P(j\F) =Σk P(k\F)·P(j\k)。     

特征关联的类别间面孔适应

研究通过系列实验探讨了面孔适应不仅仅发生在形状选择性上, 也能发生在任务相关的特征上有内在关联的两个不同类别的物体间。实验1以带有明显性别倾向的物品图片作为适应刺激, 让被试对男女之间morphing程度不同的图片面孔进行性别辨别, 考察了不同适应刺激呈现时间的类别间面孔适应。结果表明适应刺激呈现时间大于50 ms时均存在类别间面孔适应效应。实验2评估了“性别”这一特征以及适应刺激形式在类别间面孔适应中所起的作用, 结果发现带有性别倾向的物品图片、相应的物品名称和性别文字(“男性”、“女性”) 3种适应刺激类型均能产生类别间适应。实验3通过操纵适应刺激上的注意负荷(高负荷、低负荷和无负荷), 探究了注意对类别间面孔适应的影响。结果表明随着注意负荷的增加, 类别间面孔适应效应减小。3个实验报告了一个新异的类别间适应后效, 证明了适应也能发生于在任务相关特征上有内在关联的两个不同类别的物体间。     

冲突适应效应是领域特定的

本研究采用整合的交叉任务范式,通过任务类型的操纵,对冲突适应效应是领域一般的还是领域特定的问题进行了探讨。结果发现当时,在刺激-反应集为4的字母flanker+Simon的整合交叉任务中和刺激-反应集为4的Stroop+Simon的整合交叉任务中,冲突适应效应都是仅存在于任务内,不存在于任务间。说明在控制了重复启动效应且排除了任务之间维度重叠的影响后,两种类型的整合交叉任务都只在任务内观察到冲突适应效应。这表明在控制特征整合的影响后,冲突适应效应是领域特定的,同时说明冲突监测系统不仅是对冲突进行监测,也对冲突的来源进行识别。