Digit ratios (2D:4D) as predictors of risky decision making for both sexes

Many important decisions involve financial risk, and substantial evidence suggests that women tend to be more risk averse than men. We explore a potential biological basis of risk-taking variation within and between the sexes by studying how the ratio between the length of the second and fourth fingers (2D:4D) predicts risk-taking. A smaller 2D:4D ratio has been linked to higher exposure to prenatal testosterone relative to estradiol, with men having lower ratios than women. In financially motivated decision-making tasks, we find that men and women with smaller 2D:4D ratios chose significantly riskier options. We further find that the ratio partially explains the variation in risk-taking between the sexes. Moreover, for men and women at the extremes of the digit-ratio distribution the difference in risk-taking disappears. Thus, the 2D:4D ratio partially explains variation in financial risk-taking behavior within and between sexes and offers evidence of a biological basis for risk-taking behavior.     

论五四社团繁荣对中国共产党诞生的影响

五四时期,中国思想文化领域出现了繁荣的景象,其表现之一就是社团的繁荣。五四社团繁荣对中国共产党的诞生产生了积极影响。因为,每一个社团都有自己的思想信仰,其中,既有马克思的科学社会主义,也有伪社会主义学说。由此而带来的是各种思想的争鸣。争鸣的结果是伪社会主义思想的没落,马克思主义的脱颖而出,成为中国共产党的指导思想。同时,五四社团也是各种人才成长的摇篮,其中就培育了早期的共产党领袖和党员。可以说,五四社团繁荣对中国共产党的诞生提供了思想基础和人才基础。     

蒋梦麟与五四新文化运动

蒋梦麟是现代中国著名教育家 ,反对顽固守旧和全盘西化 ,主张引进西方文化 ,建构亦中亦西的文化体系 ,热情讴歌五四新文化运动 ,提倡科学教育与人文教育并重 ,追求个性自由的现代教育理念 ,有力地配合了五四新文化运动。他对五四的缺点进行了理性的反省 ,为后人提供了一份极具价值的思想文化遗产。     

Theory of mind,gender, gains in friendships versus peer acceptance and anxious solitude from middle childhood through early adolescence

This investigation proposes that theory of mind (ToM) may be related more strongly to change in friendships than peer acceptance in late middle childhood through early adolescence, and examines the relation between ToM and anxious solitude. Fourth grade ToM was tested as a predictor of change in reciprocated friendships, peer acceptance, and anxious solitude from 4th to 7th grade, and, conversely, reciprocated friendships, peer acceptance, and anxious solitude in 3^rd grade were tested as predictors of 4th grade ToM. Gender moderation of these relations was evaluated. Participants were 688 American public-school children (51.5% girls), 193 of whom completed a ToM questionnaire in 4th grade. In 3rd–7th grade children and their peers reported reciprocated friendship, and peers reported peer acceptance and anxious solitude annually. A multi-group (gender split) autoregressive cross-lagged panel analysis modeled relations between ToM and reciprocated friendship, peer acceptance, and anxious solitude over time. Consistent with hypotheses, girls’ more advanced 4th grade ToM predicted incremental gains in their number of friendships two years later, but not their peer acceptance. In contrast, boys’ more advanced 4th grade ToM did not predict change in their number of friendships or peer acceptance over time. Gender differences in the relation between ToM and friendship are discussed in the context of gender-specific peer relations patterns in late middle childhood and early adolescence. Additionally, more advanced 4th grade ToM predicted gains in anxious solitude in middle school for both genders. This somewhat surprising result is discussed in relation to ToM assessment and peer relations in anxious solitary children.     

The logic of partial-risk aversion: Paradox lost

One rational individual may be willing to pay less than another to insure a risk % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWefv3ySLgznf% gDOfdaryqr1ngBPrginfgDObYtUvgaiuaacuWF1oG8gaacaaaa!41B4!\[\tilde \varepsilon \] when another risk % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGabm4Dayaaia% aaaa!36F7!\[\tilde w\] is present even though he would pay more to insure any isolated risk, and even though % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyraiGacI% cadaabcaqaamrr1ngBPrwtHrhAXaqeguuDJXwAKbstHrhAG8KBLbac% faGaf8xTdiVbaGaaaiaawIa7aiqadEhagaacaiGacMcaciGG9aGaai% imaaaa!47F3!\[E(\left. {\tilde \varepsilon } \right|\tilde w) = 0\] for all w. Noticing this, Ross (1981) proposed excluding such reversals and gave equivalent analytical conditions. Reconsidering, we explain why some reversals are natural and show that prohibiting them has peculiar and undesirable properties. Although we also simplify the conditions and prove them necessary for partial-risk portfolio results, we conclude that they represent revealing restrictions on comparative statics rather than natural implications of increased aversion to risk.     

中国新文学理性精神论纲

文学作为一种审美形态 ,其理性精神的特殊性恰恰表现为质疑传统理性并解构一切现有不合理的理性体系。近代文学囿于时代文化的局限 ,以不同的方式显示出情与理的内在分裂。这一现象在五四之后得到克服和超越 ,表现出情与理相互激荡的新的张力样式。新文学通过各类形象的情感体验方式与活动方式 ,展现自身的理性批判功能 ,并寄寓了作家对理性精神之培育、成长和充实的深层思考     

Perceived social support,perception of competence,and hope among Chinese children with attention deficit hyperactivity disorder in a Chinese context: Children's perspective

This paper reports on the results of a study (n = 113 children with attention deficit hyperactivity disorder) that examined the effects of the children's perception of the social support (PSS) they receive from their mothers, fathers, teachers, and friends on their sense of competence and hope. PSS explained 13% of the children's overall sense of competence and 4% of their sense of hope. In the perspective of children with attention deficit hyperactivity disorder, the amount of maternal support, both in terms of importance and availability, was higher than that of their paternal support. However, the results of a multiple regression analysis have shown that paternal support accounted for 3% of the variance in the children's overall sense of competence and 5% in the variance of their physical competence. PSS from teachers had significantly explained 5%, 4%, and 4% of the variance in the children's overall, social, and physical competence, respectively. The PSS from friends significantly explained 7% of the variance in the children's cognitive competence and 4% of the variance in hope. Theoretical and clinical implications of the study are discussed.     

金融危机背景下广西破除产业转移滞缓瓶颈之策

受全球金融危机的影响,我国对外贸易下滑,FDI流量减少,这大大影响了东西走向的产业转移。然而,由于北部湾经济开发区上升为国家战略,广西获得了多项政策优势,如多个保税港区、园区获得批建。基于此,广西在新形势下要破除产业转移滞缓的瓶颈应该做到：培育民间经商投资意识,拉动民间投资;最大限度地发挥每一个优惠政策的最大使用价值;利用十大产业振兴计划,积极推进企业重组;营构健康的金融资源配置服务体系。     

How socialization goals and peer social climate predict young children's concern for others: Evidence for a development shift between 2 and 4 years of age

Children's concern for others is shaped through socialization, but current theories make different predictions as to how and when in development this socializing occurs. Here we found that mothers' prosocial socialization goals (SGs) predicted concern for others in 2‐year‐old (n = 804) and 4‐year‐old (n = 714) children. In contrast, preschool teachers' SGs predicted concern for others only for 4‐year‐old children. In addition, a positive social climate among classroom peers predicted 4‐year‐olds' prosociality. These results suggest that the nuclear family environment impacts toddlers' concern for others before the broader social environment shapes their prosociality at preschool age.     

A prospective study of adolescent mothers’ social competence,children's effortful control and compliance and children's subsequent developmental outcomes

Previous work has established that caregiver and child temperamental characteristics are associated with child compliance. Given the critical role that parents play in this process, and that children of teen mothers are at risk for poorer developmental outcomes, it is important to understand the development of compliance in the context of at‐risk parenting such as adolescent motherhood. The current study examined child compliance (Wave 5; W5) as a mediator of the association between adolescent mothers’ social competence (Wave 4; W4) and children's behavioral and academic outcomes (Wave 6; W6), and whether this mediation varied depending on children's effortful control (W4) in a sample of 204 Mexican‐origin adolescent mothers (M_age at W4 = 19.94, SD = .99) and their children (M_age at W4 = 36.21 months, SD = .45). Adolescent mothers reported on their own social competence and their children's effortful control and externalizing problems; compliance was assessed using observational methods; and academic readiness was assessed using standardized developmental assessments. Findings based on structural equation modeling revealed that adolescent mothers’ social competence was positively related to children's compliance among children with high effortful control, but not among those with low effortful control. Moreover, child compliance mediated the longitudinal association between adolescent mothers’ social competence and child externalizing problems and academic readiness. Discussion focuses on the importance of considering the role of child temperament in understanding how adolescent mothers’ social competence is subsequently associated with children's social and academic adjustment.     

Ordinal utility models of decision making under uncertainty

This paper studies two models of rational behavior under uncertainty whose predictions are invariant under ordinal transformations of utility. The quantile utility model assumes that the agent maximizes some quantile of the distribution of utility. The utility mass model assumes maximization of the probability of obtaining an outcome whose utility is higher than some fixed critical value. Both models satisfy weak stochastic dominance. Lexicographic refinements satisfy strong dominance.The study of these utility models suggests a significant generalization of traditional ideas of riskiness and risk preference. We define one action to be riskier than another if the utility distribution of the latter crosses that of the former from below. The single crossing property is equivalent to a minmax spread of a random variable. With relative risk defined by the single crossing criterion, the risk preference of a quantile utility maximizer increases with the utility distribution quantile that he maximizes. The risk preference of a utility mass maximizer increases with his critical utility value.     

《红楼梦》与“五四”新文学观建构

《红楼梦》是中国古代思想艺术传统的全面总结,也蕴含着民族文化自我更新的先导因素,因此能在"五四"时期被新文化运动的倡导者提到文学正宗的地位,多方位地参与了"五四"新文学核心精神与关键理念的建构,显示出对各种言说的巨大的构成功能。围绕《红楼梦》的指涉所带来的文学命题和语言形式,是现代中国文学意义结构中的一个重要内容和资源。     

Comparative Risk Sensitivity with Reference-Dependent Preferences

Experimental evidence suggests that individuals are risk averse over gains and risk seeking over losses (i.e., they have S-shaped utility functions in an expected utility setting) and that they are loss averse. Furthermore, the evidence leads to a single definition of S-shaped utility, but it has led to several alternative specifications of loss aversion. This paper characterizes the relations more S-shaped than and more loss averse than for a utility function, and in so doing arrives at a new definition of loss aversion based on average instead of marginal utility.     

On Harrod's first refining principle

Harrod introduced a refinement to crude Utilitarianism with the aim of reconciling it with common sense ethics. It is shown (a) that this refinement (later known as Rule Utilitarianism) does not maximise utility (b) the principle which truly maximizes utility, marginal private benefit equals marginal social cost, requires that a number of forbidden acts like lying be performed. Hence Harrod's claim that his refined Utilitarianism is the foundation of moral institutions cannot be sustained. Some more modern forms of Utilitarianism are reinterpreted in this paper as utility maximizing decision rules. While they produce more utility than Harrod's rule, they require breaking the moral rules some of the time, just like the marginal rule mentioned above. However, Harrod's rule is useful in warning the members of a group, considered as a single moral agent, of the externalities that lie beyond the immediate consequences of the collective action.     

Consistency and Change in Children's Tattling on their Siblings: Children's Perspectives on the Moral Rules and Procedures of Family Life

Children's tattling on their siblings was observed in 39 families when children were 2- and 4- and 4- and 6-years of age. Tattling was more frequent among older siblings, and increased across time, despite a corresponding decrease in sibling transgressions against one another and an increase in parents' negative reactions to tattling. Tattling was largely truthful, implicit in form, and more likely to concern transgressions of what parents also regarded as more important standards. Among 4- and 6-year-olds, tattling was related to children's negative behaviour to one another and equally likely when children faced ongoing conflict issues and when they merely wished to inform parents of sibling wrongdoing. Parents generally allowed their children to tattle on one another, rarely reprimanded tattlers, but responded to the information contained in the tattlers' reports. The parents' responses were related to the quality of their children's tattling, but the children's tattling was unrelated to the likelihood that parents would react either positively or negatively to it. Results are discussed in terms of the place of tattling within the family system, with emphasis on the children's understanding of the implications of their parents' involvement in their own disputes.     

Lattices,bargaining and group decisions

This essay aims at constructing an abstract mathematical system which, when interpreted, serves to portray group-choices among alternatives that need not be quantifiable. The system in question is a complete distributive lattice, on which a class of non-negative real-valued homomorphisms is defined. Reinforced with appropriate axioms, this class becomes a convex distributive lattice. If this lattice is equipped with a suitable measure, and if the mentioned class of homomorphisms is equipped with a metric, then the class and its convex sets are seen to possess certain characteristic properties. The main result (Theorem 6) follows from a combination of these results and a famous result due to Choquet.The mathematical scheme is then interpreted in the subject-language of choice among alternatives. It is shown, by means of an example, that the system furnishes all the ingredients for describing multi-group choices. Whether or not the same ingredients are also adequate for a behavioural theory of multi-group choices is an issue that will not be gone into. However, the example effectively illustrates how a process of bargaining can be described with the aid of the mathematical scheme.In the second example, a class of bargaining situations is modelled in the symbolism of linear programming with several objective functions combined with unknown weights; the cost vectors in such formulations are identified with homomorphisms, and the main theorem of this essay is applied.     

The Concept of Consciousness4 The Reflective Meaning

In this article, which is fourth in a series of six articles, I address the fourth concept of consciousness that the Oxford English Dictionary ("the OED") defines in its six main entries under the word consciousness. I first introduce this fourth concept, the concept of consciousness₄. by (a) identifying the previous three OED concepts of consciousness, which I have already discussed in this series of articles, and (b) by indicating how that to which we make reference, respectively, by means of those three concepts is related to the referents of the concept of consciousness₄. I then address the latter concept more directly by pursuing for the remainder of the article where the OED's fourm entry leads. Among other things, I am led to consider two competing accounts of consciousness₄ that figure prominently in the OED entry, namely the intrinsic, self-intimational account of William Hamilton and the inner-eye, perceptionlike account of John Locke. Both kinds of account are very much with us today.     

Patterns of family service needs and caregiver–child relationships among families at risk of child welfare involvement

Caregivers at risk of involvement in the child welfare system report high levels of need for multiple types of services, and their children have high levels of mental health need. Caregivers from families with more service needs, as well as unmet needs, are less likely to be engaged with child welfare services and may have diminished capacity to care for their child. This study takes a family‐centered approach by using latent class analysis to identify patterns of both caregiver and child service needs among families at risk of child welfare involvement. Using data from the LONGSCAN consortium (N = 957), we identified 4 classes of service needs among child welfare‐involved families. We then examined differences between the 4 classes based on demographics, maltreatment histories, unmet service needs, and caregiver–child relationship. The caregivers were split fairly evenly among the 4 classes: low needs, medical needs, poverty support, and high needs. There were significant differences between classes on assessed variables, with higher levels of needs associated with diminished caregiver–child relationships.     

How can an expert system help in choosing the optimal decision?

We introduce a rationality principle for a preference relation on an arbitrary set of lotteries. Such a principle is a necessary and sufficient condition for the existence of an expected utility agreeing with . The same principle also guarantees a rational extension of the preference relation to any larger set of lotteries. When the extended relation is unique with respect to the alternatives under consideration, the decision maker does not need a numerical evaluation in order to make a choice. Such a rationality condition needs little information in order to be applied, and its verification amounts to solving a linear system.The present research is supported by the Research Contract of CNR (Research National Council) 1989 and 1990 Decision Models under uncertainty and risk, for expert systems with incomplete and revisable information.     

“五四”作家的职业身份与“五四”新文学的发生

"五四"新文学发轫期,许多新文学家的主要职业是新式大学的教师。这一职业有着稳定丰厚的收入,使他们能够自由地从事新文学活动。他们利用课堂的垄断话语权,使新式教育下的学生接受新文学,形成新的文化心理结构,同时利用新式大学里的各种新文学社团和青年学生的爱国运动以及新文学家自身的声名扩大新文学的影响,使新文学为普通民众所接受,构建新文学广泛的受众群体。