实践主体与马克思哲学的生存维度

当代哲学正在发生整体性历史性转型,即生存论的转向,这种转向既是对当代人类生存困境所面临的问题的理论自觉,又是对一个半世纪前马克思开启的生存论哲学的思想发掘和当代阐释。但是,当代西方哲学无论是对当代人类的生存难题的理论求解还是对马克思哲学生存论的当代诠释都具有片面性和主观性。这是因为当代西方哲学生存论的解析视角都离异了马克思的实践主体维度。主体性和实践性是马克思哲学的两大基石,马克思哲学本质上就是实践主体哲学。马克思实践主体哲学生存论认为,人的主体性、实践性是理解人类生存问题的根本前提,无论是人类现实面临的生存困境还是人类最终摆脱现实的异化的生存境遇,本质上都是主体实践的自我生成和自我扬弃的过程。     

Young children's use of statistical sampling evidence to infer the subjectivity of preferences

A crucial task in social interaction involves understanding subjective mental states. Here we report two experiments with toddlers exploring whether they can use statistical evidence to infer the subjective nature of preferences. We found that 2-year-olds were likely to interpret another person’s nonrandom sampling behavior as a cue for a preference different from their own. When there was no alternative in the population or if the sampling was random, 2-year-olds did not ascribe a preference and persisted in their initial beliefs that the person would share their own preference. We found similar but weaker patterns of responses in 16-month-olds. These results suggest that the ability to infer the subjectivity of preferences based on sampling information begins to emerge between 16 months and 2 years. Our findings provide some of the first evidence that from early in development, young children can use statistical evidence to make rational inferences about the social world.     

Source reliability and the conjunction fallacy

Information generally comes from less than fully reliable sources. Rationality, it seems, requires that one take source reliability into account when reasoning on the basis of such information. Recently, Bovens and Hartmann (2003) proposed an account of the conjunction fallacy based on this idea. They show that, when statements in conjunction fallacy scenarios are perceived as coming from such sources, probability theory prescribes that the "fallacy" be committed in certain situations. Here, the empirical validity of their model was assessed. The model predicts that statements added to standard conjunction problems will change the incidence of the fallacy. It also predicts that statements from reliable sources should yield an increase in fallacy rates (relative to unreliable sources). Neither the former (Experiment 1) nor the latter prediction (Experiment 3) was confirmed, although Experiment 2 showed that people can derive source reliability estimates from the likelihood of statements in a manner consistent with the tested model. In line with the experimental results, model fits and sensitivity analyses also provided very little evidence in favor of the model. This suggests that Bovens and Hartmann's present model fails to explain fully people's judgements in standard conjunction fallacy tasks.     

The nature of the memory buffer in implicit learning: Learning Chinese tonal symmetries

Previous research has established that people can implicitly learn chunks, which (in terms of formal language theory) do not require a memory buffer to process. The present study explores the implicit learning of nonlocal dependencies generated by higher than finite-state grammars, specifically, Chinese tonal retrogrades (i.e. centre embeddings generated from a context-free grammar) and inversions (i.e. cross-serial dependencies generated from a mildly context-sensitive grammar), which do require buffers (for example, last in-first out and first in-first out, respectively). People were asked to listen to and memorize artificial poetry instantiating one of the two grammars; after this training phase, people were informed of the existence of rules and asked to classify new poems, while providing attributions of the basis of their judgments. People acquired unconscious structural knowledge of both tonal retrogrades and inversions. Moreover, inversions were implicitly learnt more easily than retrogrades constraining the nature of the memory buffer in computational models of implicit learning.     

Career decidedness as a predictor of subjective well-being

Forming, pursing, and achieving life tasks constitute important determinants of subjective well-being (SWB). A principal life task for emerging adults involves deciding about career goals. Prior research indicates that depression predicts SWB and may be linked to lower levels of career decidedness. We tested whether or not career decidedness predicts SWB above and beyond the influence of depression and other personality traits. We also examined whether or not career decidedness partially mediates depression's influence on SWB when controlled for personality effects. Undergraduate students (N = 181; 65% female, 52% Asian) responded to measures of career decidedness, SWB, and personality. Results largely confirmed predictions. A partial mediator model indicated a direct relationship between decidedness and SWB not moderated by grade level, and an inverse relationship between the depression facet of neuroticism and both career decidedness and SWB. Findings further support career interventions to increase decidedness during the first year of college.     

Predicting the intensity of losses vs. non-gains and non-losses vs. gains in judging fairness and value: A test of the loss aversion explanation

Three studies examined the predictions that in the context of evaluation of fairness and concessions in negotiations, losses would be perceived as more intensely negative than non-gains, and that non-losses would be perceived as more positive than gains. Extant studies tested only the first of these predictions. These predictions derive from the principle of loss aversion (LA), according to which losses are experienced more intensely than gains of similar objective magnitude. In this view, losses and non-losses are measured against the steep loss part of the value curve, whereas gains and non-gains are measured against the shallow part of the value curve. Our studies replicated extant studies in confirming the first prediction but failed to confirm the second prediction. Specifically, opposite to the prediction of LA, gains were perceived as more intensely positive than non-losses. It seems, therefore, that LA is not a sufficient explanation of why losses are perceived as more averse than gains. Feature positive and regulatory focus effects are discussed as additional potential contributors to the phenomenon.     

Cars overtaking cyclists on different urban road types – Expectations about passing safety are not aligned with observed passing distances

Cars overtaking cyclists have been identified as a source of crashes and subjective risk. Several studies investigated the passing distance for different road types. There has been less research concerning cyclists’ expectations concerning the passing distance at different road types. Thus, we aim at contrasting cyclists’ expectations about the passing safety for different speed limits and cycling infrastructures with the passing distances observed at corresponding urban road types. For this purpose, we show participants images of a predefined set of survey zones in a web-based survey, and ask them about the expected passing safety of cars overtaking them when imagining riding their bikes at these locations. We measure the observed passing distances at the same survey zones with a bike-mounted sensor. We find that cars meet the German legal minimum passing distance of 1.5 m in towns in only 30% of all observed events. In 30 km/h speed zones, passing distances at roads featuring dedicated cycling infrastructure (e.g. bike lanes, cycling boulevards) are decreased as compared to those featuring no cycling infrastructure. In contrast, people estimate that the passing safety on roads with dedicated cycling infrastructure is safer than without cycling infrastructure. This effect is even more pronounced on living streets. Situations where oncoming cars (e.g. living streets, ‘opposite’ roads) must be passed in close distance are apparently not perceived as particularly dangerous. Cycling tracks in 50 km/h speed zones increase both the observed passing distance and the corresponding expectations about passing safety. Taken together, the qualitative comparison of the two datasets implies that cyclists’ expectations about cars passing them in a more adequate and safe distance in streets with reduced speed limits and dedicated cycling infrastructure are not justified in light of the actually observed passing distances. Possible explanations for the contradicting patterns could be that cyclists prefer situations where space is explicitly dedicated for bikes, that they account for the anticipated car traffic volume, and that they assume oncoming cars as less dangerous to pass.     

现实利他行为与网络利他行为对大学生主观幸福感的影响：多重中介模型

为探讨现实利他行为与网络利他行为对主观幸福感的影响,并着力考察现实社会支持、网络社会支持与自尊在其中所起的作用,以1064名在读大学生为被试进行问卷调查,研究结果显示：（1）现实利他行为与网络利他行为均能在一定程度上预测主观幸福感。（2）现实、网络社会支持在现实、网络利他行为对主观幸福感的影响中起中介作用。（3）现实社会支持和自尊、网络社会支持和自尊在现实、网络利他行为对主观幸福感的影响中起多重中介作用。