Mueller-Lyer illusion and size estimation performance in schizophrenics compared to normal controls

A size estimation (SE) paradigm and the Mueller-Lyer (ML) illusion were used to examine perceptual disturbances in schizophrenics. 35 reliably diagnosed (DSM III-R) schizophrenics were compared to 20 subjects with no history of psychiatric illness. Perceptual distortions found in previous studies of schizophrenics were only to a certain extent confirmed in the present results. More overestimators were found among the schizophrenics than among the normals on the SE task. The schizophrenics, first of all the chronic patients, also proved to be more prone to the Mueller-Lyer illusion. A reason why the very clear differences between schizophrenics and normals found in previous examinations were not confirmed in the present study, might be that a reliable diagnostic instrument was for the first time used in this kind of study.     

The relative sensitivities of same-different and identification judgment models to perceptual dependence

Probabilistic models of same-different and identification judgments are compared (within each paradigm) with regard to their sensitivity to perceptual dependence or the degree to which the underlying psychological dimensions are correlated. Three same-different judgment models are compared. One is a step function or decision bound model and the other two are probabilistic variants of a similarity model proposed by Shepard. Three types of identification models are compared: decision bound models, a probabilistic multidimensional scaling model, and probabilistic models based on the Shepard-Luce choice rule. The decision bound models were found to be most sensitive to perceptual dependence, especially when there is considerable distributional overlap. The same-different model based on the city-block metric and an exponential decay similarity function, and the corresponding identification model were found to be particularly insensitive to perceptual dependence. These results suggest that if a Shepard-type similarity function accurately describes behavior, then under typical experimental conditions it should be difficult to see the effects of perceptual dependence. This result provides strong support for a perceptualindependence assumption when using these models. These theoretical results may also play an important role in studying different decision rules employed at different stages of identification training.We thank Robert Melara, Jerome Busemeyer and three anonymous reviewers for comments on an earlier draft of this paper.     

Moral bias toward different social classes

The influence of social class on prosocial behaviour has long been a focus of intense research interest. The present research involved four studies that covered four moral exemplars (villains, victims, heroes, and beneficiaries) to test whether people of different social classes are treated equally in moral judgements. We described moral events experienced by different agents of varying social classes and asked participants to rate the morality of the events and their emotional responses. The results revealed that compared with the low-class condition, high-class individuals had an overall moral disadvantage when they were regarded as villains, victims, and beneficiaries. For the exemplar of hero, the high-class condition was no different from the low-class condition except that high-class heroes evoked less elevation than low-class heroes. The results reveal that people hold a biased moral attitude toward individuals in different social classes.     

Nature of screen violence and its relation to program popularity

This study was designed to analyze the context-specific variation in the amount, intensity, and attractiveness of screen violence in Finnish network TV programs (n = 259). The additional aim was to investigate whether the violence content enhances the popularity of a program. Typically, the frequency and intensity of violent constructions varied with program type, and with cultural and temporal settings, but the attractiveness of violence varied only with program type. Violence in non-fiction was generally less frequent, less intense, and less attractive than that in fiction. U.S. fiction contained violence more frequently than Finnish fiction, while violence in exported European films was, on average, more intense than in other productions. Attractive style of violent portrayals was represented equally in fiction regardless of the TV culture. Higher violence content or attractiveness of TV violence did not contribute toward larger audiences. However, there was a moderate correlation between the intensity of violence and the popularity of a program. Aggr. Behav. 23:281–292, 1997. © 1997 Wiley-Liss, Inc.     

刻板印象从内容模型到系统模型的发展与应用

21世纪以来,在刻板印象研究中最受瞩目的当属刻板印象内容模型（Stereotype Content Model, SCM）的提出。它通过热情和能力二个维度区分对不同群体的刻板印象。新近的系统模型则将SCM与群际情绪、行为反应相结合,并凸现了道德维度,开创性地提出了群际情绪-刻板印象-行为趋向系统模型（Behaviors from Intergroup Affect and Stereotypes Map, BIAS Map）。这一系统模型是对刻板印象内容模型的有意义延伸,同时二者的有机结合进一步促进了刻板印象内群体与群体间研究的整合性,较之又增添了认知-情绪-行为与刻板印象预测之间的联结。     

网络主体的道德意识培养

为了保证网络社会的健康运行 ,网络道德建设已成为无法回避重要的课题。在网络道德建设中 ,我们必须注重培养网络主体的道德意识 ;在培养网络道德意识的过程中 ,我们既要坚持对网络主体的道德灌输、提高其道德认识能力 ,又要锻炼其道德意志并加强道德修养。     

提取干扰对不同类型内隐记忆的影响

以往研究关于提取阶段的干扰是否会影响内隐记忆存在着异义, 其中一个重要因素可能源于所采用的内隐记忆测验类型的差异。本研究采用学习-测验范式, 通过4个实验, 分别考察了提取干扰对识别式知觉内隐测验、识别式概念内隐测验、产生式知觉内隐测验和产生式概念内隐测验的影响, 以期对提取干扰和内隐记忆之间的关系有着更全面的了解。结果表明: (1)词汇判断任务(识别式知觉)和语义分类任务(识别式概念)的启动效应在提取干扰下消失了, (2)而产生式词汇判断任务(产生式知觉)和产生式语义分类任务(产生式概念)在提取干扰下仍发现了明显的启动效应, 但与无干扰条件相比, 启动效应量也有着明显的减少。由此可见, 不同类型的内隐记忆都会受到提取干扰的影响, 相比于产生式启动, 识别式启动更容易受到提取干扰的破坏。     

Appearance and reality

There is tension between the appealing idea that visual experience puts us in touch with objective reality and the doctrine of perceptual relativity, the claim that experience varies with such factors as distance, lighting, and angle of view. In this paper I present arguments for relativity, and then go on to propose that in view of relativity, we should believe that the properties presented to us in perception are relational and viewpoint‐dependent. I conclude by sketching a theory of how we nonetheless manage to achieve contact with objective properties. According to the theory, such contact is best explained in terms of perceptual representations acting in concert with cognitive and motoric representations, not in terms of perceptual representations alone.