On Łukasiewicz's Four-Valued Modal Logic

ukasiewicz's four-valued modal logic is surveyed and analyzed, together with ukasiewicz's motivations to develop it. A faithful interpretation of it in classical (non-modal) two-valued logic is presented, and some consequences are drawn concerning its classification and its algebraic behaviour. Some counter-intuitive aspects of this logic are discussed in the light of the presented results, ukasiewicz's own texts, and related literature.     

On Being Poor and Feeling Poor: Low Socioeconomic Status and the Moral Self

Persons of low socioeconomic status generallyexperience worse health and shorter lives thantheir better off counterparts. They alsosuffer a greater incidence of adversepsychosocial characteristics, such as lowself-esteem, self-efficacy, and self-masteryand increased cynicism and hostility. Thesepopulation data suggest another category ofharm to persons: diminished moral agency. Chronic socioeconomic deprivation can createenvironments that undermine the development ofself and capacities constitutive to moralagency – i.e., the capacity forself-determination and crafting a life of one'sown. The harm affects not only the choicesa person makes, but the chooser herself. Thismoral harm is particularly salient in modernWestern societies, especially in the UnitedStates, where success and failure is attributedto the individual, with little notice of thelarger social and political realities thatinform an individual's circumstances and choices.     

Meno and the Monist

Recent critiques of veritistic value monism, or the idea that true belief is unique in being of fundamental epistemic value, typically invoke a claim about the surplus value of knowledge over mere true belief, in turn traced back to Plato's Meno. However, to the extent Plato at all defends a surplus claim in the Meno, it differs from that figuring in contemporary discussions with respect to both its scope and the kind of value at issue, and is under closer scrutiny fully compatible with veritistic value monism. Consequently, contrary to what seems to be supposed in the literature, the critics of monism have little to gain from turning to the Meno for support.     

Prospective associations between social status and social anxiety in early adolescence

This study examined the transactional longitudinal association between social status (likeability and popularity) and social anxiety symptoms (fear of negative evaluation and social avoidance and distress), and explored gender differences in this association. Participants included 274 adolescents (136 boys, M_age = 12.55). Data were collected at two waves with a 6-month interval. Likeability and popularity were measured with peer nominations and social anxiety symptoms with self-reports. Autoregressive cross-lagged path models showed relative stability of social status and social anxiety. Girls who were seen as less popular by their classmates avoided social situations more frequently and experienced more distress during such situations over time. These results highlight the importance of distinguishing between different social status components and social anxiety symptoms and to take gender into account. Early support for less popular girls seems important to prevent more severe consequences of avoidance and distress, such as social exclusion and victimization.     

Childhood intelligence and adult health: The mediating roles of education and socioeconomic status

The longitudinal relation between childhood intelligence and various health outcomes in adulthood is now well-established. One mediational model that accounts for this relation proposes that intelligence has cumulative indirect effects on adult health via subsequent educational attainment and adult socioeconomic status (SES). The aim of the present study was to examine whether and the extent to which educational attainment and SES mediate the impact of childhood intelligence on three dimensions of adult health in Luxembourg, a country with high-quality universal public health care. We used data from 745 participants in the Luxembourgish MAGRIP study. At the age of 12, participants completed a comprehensive intelligence test. At the age of 52, they reported their educational careers, SES, and functional, subjective, and physical health status. Using structural equation modeling, we investigated the direct and indirect effects (via educational attainment and adult SES) of childhood intelligence on adult health. We found that higher childhood intelligence predicted better functional, subjective, and physical health in adulthood. These effects were entirely mediated via educational attainment and SES. The mediational processes differed depending on the health dimension under investigation: Whereas SES was crucial in mediating the effect of intelligence on functional and subjective health, educational attainment was crucial in mediating the effect on physical health. These findings held up when considering adult intelligence and were similar for women and men. Our results suggest that even excellent public health care cannot fully offset the cumulative effects of childhood intelligence on adult health. Further studies are needed to investigate the relative importance of different mediators in the intelligence–health relation while including a broader set of objective health measures.     

歧视知觉对城市流动儿童幸福感的影响：中介机制及归属需要的调节作用

采用整群取样法对选自北京市的1551名流动儿童进行测查, 探讨歧视知觉对城市流动儿童的个体和群体幸福感的影响机制, 即内群体认同和群体地位感在其中的中介作用, 以及不同归属需要下内群体认同和群体地位感的中介作用差异。结果表明：(1)公立学校小学流动儿童的个体和群体幸福感相对较高; 流动男生比流动女生具有较高的生活满意度, 流动女生比流动男生具有较高的群体幸福感。(2)歧视知觉对城市流动儿童的个体和群体幸福感存在直接显著的负向预测作用, 并通过内群体情感认同和群体地位感的中介作用负向预测群体幸福感。(3)不同归属需要下歧视知觉对个体和群体幸福感的作用机制存在差异。在高归属需要组, 歧视知觉对个体幸福感存在直接显著的负向预测作用, 并通过群体地位感和群体幸福感的双重中介消极地影响个体幸福感; 歧视知觉完全通过群体地位感的中介消极地影响群体幸福感。在低归属需要组, 歧视知觉对个体幸福感既存在直接的负向预测作用, 也通过内群体情感认同和群体地位感的中介发挥间接性的积极作用; 歧视知觉对群体幸福感只存在间接的消极影响, 内群体情感认同和群体地位感在其中发挥完全中介作用。这表明, 内群体情感认同和群体地位感在流动儿童歧视知觉与幸福感之间的中介效应受到归属需要的调节影响。