Visual aftereffects for walking actions reveal underlying neural mechanisms for action recognition

The results of this study illustrate a new high-level visual aftereffect: Observing actors walking forward, without horizontal translation, makes subsequent actors appear to walk backward, and the opposite effect is obtained after observing backward walking. We used this aftereffect, which cannot be explained by simple low-level adaptation to motion direction, to investigate the properties of neural mechanisms underlying recognition of walking actions. Our results suggest that the perception of walking and the perception of static images of actors in walking postures rely on common brain mechanisms that are primarily object centered, rather than viewer centered, and that are blind to the identity of the actor. These results, obtained with human psychophysical adaptation techniques, support previous evidence accumulated using single-unit recording in nonhuman primates. In addition, these results provide evidence that current models of human action recognition require an object-centered processing stage.     

How the Bayesians got their beliefs (and what those beliefs actually are): comment on Bowers and Davis (2012)

Bowers and Davis (2012) criticize Bayesian modelers for telling "just so" stories about cognition and neuroscience. Their criticisms are weakened by not giving an accurate characterization of the motivation behind Bayesian modeling or the ways in which Bayesian models are used and by not evaluating this theoretical framework against specific alternatives. We address these points by clarifying our beliefs about the goals and status of Bayesian models and by identifying what we view as the unique merits of the Bayesian approach.     

Prior Attitudes,Salient Value Similarity,and Dimensionality: Toward an Integrative Model of Trust in Risk Regulation1

Although it is widely recognized that trust plays an important role in people's responses to various risks, there is still considerable conceptual disagreement about the different aspects of trust. There are at least 3 different approaches to trust: (a) dimensional, (b) salient value similarity, and (c) associationist. Three British datasets on genetically modified food were used to test the plausibility of a causal model that integrates these approaches. It appears that value similarity can be predicted by a combination of prior attitudes and perceived attitudes of the other, and that value similarity precedes other important trust judgments. The study suggests that various risk‐relevant judgments are expressions of a more general attitude toward genetically modified food, and raises questions about the usefulness of detailed modelling.     

中国共产主义运动中的哲学家--艾思奇、毛泽东和中国马克思主义哲学

在中国马克思主义哲学发展过程中,1937年是个重要的分水岭。这一年毛泽东在延安抗日军政大学发表了一系列讲演,主要讨论马克思主义哲学中的辩证唯物主义。这些讲演记录的部分原稿经修订后最终以论文形式发表,并在1949年后奠定了中国官方解释马克思主义哲学的基石。这些哲学论文     

Conditional Probabilities, Potential Surprise, and the Conjunction Fallacy

Tversky and Kahneman (1983) found that a relationship of positive conditional dependence between the components of a conjunction of two events increases the prevalence of the conjunction fallacy. Consistent with this finding, the results of two experiments reveal that dependence leads to higher estimates for the conjunctive probability and a higher incidence of the fallacy. However, contrary to the theoretical account proposed by Tversky and Kahneman, the actual magnitude of the conditional relationship does not directly affect the extent of the fallacy; all that is necessary is for a positive conditional relationship to exist. The pattern of results obtained can be accounted for in terms of Shackle's (1969) 'potential surprise' theory of subjective probability. Surprise theory predicts that the impact of the conditional event will be at its maximum where the relationship is a negative one. Tversky and Kahneman's model, on the other hand, predicts the maximum effect when the relationship is positive. In all 12 scenarios tested, multiple regression analysis revealed that the standardized beta weight associated with the conditional event was greater when the relationship was a negative one. Thus the outcome was supportive of the surprise model rather than Tversky and Kahneman's account.     

Short-term homogeneous group therapy for schizophrenic inpatients: A questionnaire evaluation

Traditional, insightoriented group therapy with a heterogeneous patient population has not been effective in the short-term inpatient setting. We have experimented with a homogeneous group therapy format where all of the patients have been acutely psychotic schizophrenics. Clinically, this approach has been found to be useful. Questionnaires filled out by the patients at the time of discharge have supported this conclusion. The patients valued the group more as a place to express their feelings and learn ways of interacting with others than as a place to test reality or receive advice on practical issues.     

Outpatient alcoholics view group therapy

Eight chronic alcoholic outpatients who completed six months of a biweekly therapy group returned questionnaires based on Yalom's concepts of group therapy curative factors. The questionnaire data revealed that the most helpful factors were instillation of hope, altruism, group cohesiveness, interpersonal output and universality. These results are discussed with reference to other studies using Yalom's technique.Supported by Biomedical Research Support Grant Number 2-0570260-30102, Langley Porter Psychiatric Institute, San Francisco, California.     

Envy and jealousy as discrete emotions: A taxometric analysis

Envy and jealousy may differ in kind or only by degree. In a study of emotion episodes recalled by 291 subjects, two forms of taxometric analysis were used to test between categorical and dimensional models of the two emotions. The two emotions yielded strong convergent evidence of discreteness, and commonly cooccurred. However, although subjects rated their episode to contain similar levels of envy and jealousy, both terms were equally correlated with the presence of envy features and neither term was correlated substantially with the presence of jealousy features. Implications ar drawn for the study of categorical distinctions between emotions, and for the relation between emotions and emotion terms.The authors would like to thank Tammy Carter for assistance with data collection.