信念归因的机制:fMRI能告诉我们什么

发展心理学研究表明信念归因与抑制性控制和语言(特别是补充句法,complement syntax)有着密切的联系,儿童抑制性控制能力和补充句法能力与其错误信念任务的表现有较高的相关。但是抑制性控制能力和补充句法能力对于信念归因是不是必须的在发展心理学中并没有得到解决。脑成像研究表明,信念归因与抑制性控制和补充句法有着不同的神经机制,从而在一定程度上表明,至少对于大人,在完成错误信念归因任务过程中可能并不需要抑制性控制和补充句法。     

What children can tell us about living in danger

Developmental challenges faced by children growing up in situations of chronic danger linked to community violence and communal conflict are reviewed. The concept of post-traumatic stress disorder is expanded to include situations of chronic and on-going traumatic stress associated with dangerous environments--war zones and inner city neighborhoods plagued by violence and crime. Of particular importance is the impact of chronic stress and danger on the child's world view, the child's social map, and the child's moral development. On the basis of field work in 5 war zones, the article points to the importance of adult-led "processing" of the young child's experience to his or her psychological coping and moral development. Some of the contradictions operating in such environments are explored--for example, that "fanatical" ideology may provide short-term support for adults and children but also may serve to prolong communal conflict, impede the necessary processing of experience, and increase vulnerability in the long run.     

What studying genetically-based disorders can tell us about ourselves

Bridging cognition, brain and genes: evidence from genetically-based syndromes, Fifth Annual Meeting of the Cognitive Neuroscience Society, 5-7 April 1998, San Francisco, CA, USA.     

Acquiring new word meaning: What does it tell us about development

R. J. Sternberg (1984, Developmental Review, 4, 113–138) offers a thoughtful and provocative essay on how individuals acquire meanings for novel or unfamiliar nouns. The Sternberg essay, however, is incomplete on a number of grounds. By stressing general processes and specific knowledge as critical components in the acquisition of verbal concepts, for example, it overlooks two logically complementary categories—specific processes and general knowledge—and the role these play in the acquisitions in question. A second concern is that the paper blurs distinctions among development, short-term learning, and the origin/acquisition of individual differences. Finally, Sternberg is encouraged to frame the specific phenomenon described here within the context of a larger theory of intellectual development and to indicate what else this specific model can be used to explain.     

What clocks tell us about the neural correlates of spatial imagery

We review a series of experimental studies aimed at answering some critical questions about the neural basis of spatial imagery. Our group used functional magnetic resonance imaging (fMRI) to explore the neural correlates of an online behaviourally controlled spatial imagery task without need for visual presentation—the mental clock task. Subjects are asked to imagine pairs of times that are presented acoustically and to judge at which of the two times the clock hands form the greater angle. The cortical activation elicited by this task was contrasted with that obtained during other visual, perceptual, verbal, and spatial imagery tasks in several block design studies. Moreover, our group performed an event‐related fMRI study on the clock task to investigate the representation of component cognitive processes in spatial imagery. The bulk of our findings demonstrates that cortical areas in the posterior parietal cortex (PPC), along the intraparietal sulcus, are robustly involved in spatial mental imagery and in other tasks requiring spatial transformations. PPC is bilaterally involved in different kinds of spatial judgement. Yet the degree to which right and left PPC are activated in different tasks is a function of task requirements. From event‐related fMRI data we obtained evidence that left and right PPC are activated asynchronously during the clock task and this could reflect their different functional role in subserving cognitive components of visuospatial imagery.     

What various kinds of errors tell us about lateral masking effects

Error analyses were conducted to study processes underlying lateral masking effects. Location errors (i.e., confusions with a flanking letter) occurred at a rate higher than chance, and they increased with increasing eccentricity and with decreasing spacing. In longer strings, confusions with a flanker directly adjacent to the target (which is itself laterally masked) were more frequent than with a far flanker, and these confusions also increased with increasing eccentricity and with decreasing spacing indicating that identification of the letter's form is not necessarily disturbed by adjacent characters. This was confirmed in a whole report task, where there was better recognition performance for the central letter than in partial report. Whereas in partial report, the left flanker was more often confused with the target than the right one, in whole report, the left-most letter was recognized best. The data provide evidence that positional uncertainty contributes to lateral masking effects, and that a substantial portion of positional uncertainty occurs after having identified the letter's forms.     

What catatonia can tell us about "top-down modulation": a neuropsychiatric hypothesis

Differential diagnosis of motor symptoms, for example, akinesia, may be difficult in clinical neuropsychiatry. Symptoms may be either of neurologic origin, for example, Parkinson's disease, or of psychiatric origin, for example, catatonia, leading to a so-called "conflict of paradigms." Despite their different origins, symptoms may appear more or less clinically similar. Possibility of dissociation between origin and clinical appearance may reflect functional brain organisation in general, and cortical-cortical/subcortical relations in particular. It is therefore hypothesized that similarities and differences between Parkinson's disease and catatonia may be accounted for by distinct kinds of modulation between cortico-cortical and cortico-subcortical relations. Catatonia can be characterized by concurrent motor, emotional, and behavioural symptoms. The different symptoms may be accounted for by dysfunction in orbitofrontal-prefrontal/parietal cortical connectivity reflecting "horizontal modulation" of cortico-cortical relation. Furthermore, alteration in "top-down modulation" reflecting "vertical modulation" of caudate and other basal ganglia by GABA-ergic mediated orbitofrontal cortical deficits may account for motor symptoms in catatonia. Parkinson's disease, in contrast, can be characterized by predominant motor symptoms. Motor symptoms may be accounted for by altered "bottom-up modulation" between dopaminergic mediated deficits in striatum and premotor/motor cortex. Clinical similarities between Parkinson's disease and catatonia with respect to akinesia may be related with involvement of the basal ganglia in both disorders. Clinical differences with respect to emotional and behavioural symptoms may be related with involvement of different cortical areas, that is, orbitofrontal/parietal and premotor/motor cortex implying distinct kinds of modulation--"vertical" and "horizontal" modulation, respectively.     

The associations in our heads belong to us: Searching for attitudes and knowledge in implicit evaluation

Explicitly, humans can distinguish their own attitudes from evaluations possessed by others. Implicitly, the viability of a distinction between attitudes and evaluative knowledge is less clear. We investigated relations between explicit attitudes, cultural knowledge and the Implicit Association Test (IAT). In seven studies (158 samples, N=107,709), the IAT was reliably and variably related to explicit attitudes, and explicit attitudes accounted for the relationship between the IAT and cultural knowledge. We suggest that people do not have introspective access to the associations formed via experience in a culture. Ownership of mental associations is established by presence in mind and influence on thinking, feeling and doing. Regardless of origin, associations are influential depending on their availability, accessibility, salience, and applicability. Distinguishing associations as “not mine” is a self-regulatory act and contributes to the distinction between explicit evaluation, where such acts are routine, and implicit evaluation, where they are not.     

What Stroop tasks can tell us about selective attention from childhood to adulthood

A rich body of research concerns causes of Stroop effects plus applications of Stroop. However, several questions remain. We included assessment of errors with children and adults (N = 316), who sat either a task wherein each block employed only trials of one type (unmixed task) or where every block comprised of a mix of the congruent, neutral, and incongruent trials. Children responded slower than adults and made more errors on each task. Contrary to some previous studies, interference (the difference between neutral and incongruent condition) showed no reaction time (RT) differences by group or task, although there were differences in errors. By contrast, facilitation (the difference between neutral and congruent condition) was greater in children than adults, and greater on the unmixed task than the mixed task. After considering a number of theoretical accounts, we settle on the inadvertent word‐reading hypothesis, whereby facilitation stems from children and the unmixed task promoting inadvertent reading particularly in the congruent condition. Stability of interference RT is explained by fixed semantic differences between neutral and incongruent conditions, for children versus adults and for unmixed versus mixed task. We conclude that utilizing two tasks together may reveal more about how attention is affected in other groups.     

The implicit theories of firesetters: A preliminary conceptualization

The importance of cognition in the facilitation and reinforcement of criminal behavior has been highlighted and recognized in numerous offender populations. In particular, professionals have theorized that various offender populations hold offense-supportive schemas or implicit theories that require treatment in therapy. However, the role of cognition in deliberate firesetting has received no focused conceptual or theoretical attention. Using current research evidence and theory relating to general cognition and the characteristics of firesetters, this paper outlines a preliminary conceptual framework of the potential cognitions (in the form of implicit theories) that are likely to characterize firesetters. Five implicit theories are proposed that may be associated with firesetting behavior. The content, structure, and etiological functions of these implicit theories are described as well as the cognitive similarities between firesetters and other offender types. Future research implications and practical implications of the proposed implicit theories are also discussed.     

What gene-environment interactions can tell us about social competence in typical and atypical populations

Social competence is a complex human behaviour that is likely to involve a system of genes that interacts with a myriad of environmental risk and protective factors. The search for its genetic and environmental origins and influences is equally complex and will require a multidimensional conceptualization and multiple methods and levels of analysis. Behavioural genetic research can begin to address the fundamental yet complex question of how children develop social competence by uncovering the various influences on social development and disentangling variance due to multiple genes, environments and experiences. In this paper, we review the current status of research on sociability, face recognition, emotion recognition, and theory of mind (TOM)--well defined and measured constructs that are likely to be useful indices for detecting genetic and environmental influences on social competence. We also propose specific milestones as indices of further progress in the field: the development of an operational definition of the construct of social competence, the identification of social endophenotypes-psychological processes that are validly and reliably measured components of social competence, and improving specificity and homogeneity with regard to social endophenotypes within a population of study by employing 'extreme social phenotypes'. These efforts will lead to a better understanding of the specific contributions to the normal variation of social competence in the general population as well as to atypical social development.     

What does the Ternus display tell us about motion processing in human vision?

The Ternus display is a moving visual stimulus which elicits two very different percepts, according to the length of the interstimulus interval (ISI) between each frame of the motion sequence. These two percepts, referred to as element motion and group motion, have previously been analysed in terms of the operation of a low-level, dedicated short-range motion process (in the case of element motion), and of a higher-level, attentional long-range motion process (in the case of group motion). We used a novel Ternus configuration to show that both element and group motion are, in fact, mediated solely by a process sensitive to changes in the spatial appearance of the Ternus elements. In light of this, it appears that Ternus displays tell us nothing about low-level motion processing, implying that previous studies using Ternus displays, for instance those dealing with dyslexia, require reinterpretation. Further manipulations of the Ternus display revealed that the orientation and spatial-frequency discrimination of the process underlying the analysis of Ternus displays is far worse than thresholds for spatial vision. We conclude that Ternus displays are analysed via a long-range motion, or feature-tracking, process, and that this process is distinct from spatial vision.     

What emotional reactions can tell us about the nature of others: An appraisal perspective on person perception

The present research aimed to assess how people use knowledge about the emotional reactions of others to make inferences about their character. Specifically, we postulate that people can reconstruct or “reverse engineer” the appraisals underlying an emotional reaction and use this appraisal information to draw person perception inferences. As predicted, a person who reacted with anger to blame was perceived as more aggressive, and self-confident, but also as less warm and gentle than a person who reacted with sadness (Study 1). A person who reacted with a smile (Study 1) or remained neutral (Study 2) was perceived as self-confident but also as unemotional. These perceptions were mediated by perceived appraisals.     

Interactions do not only tell us when,but can also tell us how: Testing process hypotheses by interaction

Hypotheses about psychological processes are often tested using traditional mediation analysis. This analysis relies on measurement of a transmitting variable. Conducting this analysis has become almost synonymous with examining process hypotheses. An alternative strategy to mediation analysis (the Testing‐a‐Process‐hypothesis‐by‐an‐Interaction Strategy, TPIS) is illustrated here. TPIS is based on a fully experimental design whereby a hypothesized process is tested by an interaction between the hypothesized cause of an effect and a contextual variable. In the interaction term, the contextual variable allows comparison of the causal effect observed when the process is uninterrupted to the effect observed when the process is interrupted. Thus, TPIS translates a theoretical process hypothesis into a statistical interaction hypothesis that uses a fully experimental design to directly examine the hypothesized process. Copyright © 2010 John Wiley & Sons, Ltd.     

The implicit theories approach to the self-monitoring controversy

In the face of uncertainty and disagreement about the meaning and measurement of the self-monitoring construct, the author proposes an implicit theories approach to shed light on what self-monitoring scales may be tapping. The first study explored people's notions of what high and low self-monitors are like, based on the statements in the 18-item Self-Monitoring Scale (Gangestad and Snyder, 1985). The second study compared that measure with Lennox and Wolfe's (1984) Revised Self-Monitoring Scale and examined defensive motivation within the scales. The third study consisted of two experiments to determine whether subjects perceived the items of Gangestad and Snyder's Self-Monitoring Scale as reflecting a unitary latent entity or separate, contradictory variables. It was concluded that the implicit theories approach appears to be a useful complement to traditional factor analytic studies, providing new ways of looking at a personality construct, clarifying some theoretical issues, and generating hypotheses for future research.     

The relation between implicit theories of personality and forgiveness

This research examined the effect of implicit theories of personality on interpersonal forgiveness and the mediating mechanism underlying this effect. Two experiments show that incremental personality theorists are less forgiving than entity personality theorists and that this difference can be explained by the incremental theorists’ stronger tendency to appraise the transgressor as responsible for causing the hurtful event. The same findings were obtained regardless of whether forgiveness was measured by self‐report or assessed as responses to anger words in a latency response task.