复杂性视野下的内环境和内环境稳态

研究和总结了复杂系统的基本特征,从复杂性的角度讨论了内环境作为动态非线性系统存在具有的诸种性质和正反馈在维持、调节内环境稳定中的作用,指出现阶段需要重新认识内环境和内环境稳态的生理学机制。     

Weighted vest effects on impact forces and joint work during vertical jump landings in men and women

Weighted vest (WV) use during vertical jump landings (VJL) does not appear to alter peak vertical ground reaction forces (GRF) or peak joint torques. However, WV effects on joint work and sex differences during VJL are not well understood. This study assessed WV effects on vertical GRF and sagittal joint work during VJL in men and women. Twelve men and 12 women performed VJL wearing a WV with zero added mass (unloaded) and with 10% body mass (loaded) while GRF and kinematic data were obtained. Mixed-model analyses of variance (α = 0.05) and effect sizes (ES) were used to assess differences between sexes and/or load conditions. Regardless of sex, greater landing height (p < 0.001; ES = 0.37) and peak vertical GRF (p = 0.001; ES 0.51) occurred when unloaded, while greater landing time (p = 0.001; ES = 0.46) and negative lower extremity work (p < 0.001; ES = 0.41) occurred when loaded through greater negative work about the hip (p = 0.001; ES = 0.27) and ankle (p = 0.020; ES = 0.27). No differences in hip (p = 0.753; ES = 0.03), knee (p = 0.588; ES = 0.07), or ankle (p = 0.580; ES = 0.09) joint displacement were detected between loaded and unloaded conditions. Men exhibited greater landing heights (p < 0.001; ES = 2.49) and greater peak vertical GRF than women (p = 0.007; ES = 1.18), though women exhibited greater negative lower extremity work (p < 0.001; ES = 1.98) than men through greater negative knee (p < 0.001; ES = 1.98) and ankle (p = 0.032; ES = 0.94) work. No sex differences were detected for joint angular displacement about the hip (p = 0.475; ES = 0.30), knee (p = 0.666; ES = 0.18), or ankle (p = 0.084; ES = 0.71). These data revealed a unique load accommodation strategy during VJL with a WV characterized by greater lower extremity joint work performed via increased joint torque despite lesser landing height and peak vertical GRF. Women appear to perform greater lower extremity joint work than men during VJL despite lesser landing height and peak vertical GRF. Current and prospective WV users should be aware of their load accommodation strategy during VJL with an external load. Women may consider developing more refined load accommodation strategies for VJL regardless of whether external loading is applied to avoid performing excessive amounts of lower extremity work.     

聋人大学生心理控制源对求职行为的影响：职业成熟度的中介作用

采用中国大学生控制源测量问卷、职业成熟度量表和高校应届毕业生求职调查问卷对重庆、北京、吉林、天津4地4所高校的386名聋人大学生进行调查,旨在探讨聋人大学生心理控制源、职业成熟度与求职行为的关系,揭示职业成熟度在心理控制源与求职行为之间的中介作用机制。结果发现：（1）内控对职业成熟度和求职行为均具有显著的正向预测作用。（2）职业成熟度在内控与求职行为之间起部分中介作用。（3）职业成熟度在外控对求职行为的影响中起着“遮掩效应”。     

Laboratory Ritual: Experimentation and the Advancement of Science

Technical achievement in laboratories requires millennia–old ritual formulations; the methodological expectations and presuppositions of scientists stem not only from investigations of the last three centuries but also from the ritual knowledge making that has governed human religion. Laboratory research is a form of human ritual open to interpretation in the manner of religious ritual. The experiments of the laboratory are fact–gathering ventures, but the integration of that knowledge into our general understanding of a universe of information networks is the process of knowledge making, and it is the highest achievement of all rituals, be they religious or scientific. Ritual theory offers insight into the nature of scientific experimentation.     

Theism, Evolutionary Epistemology, and Two Theories of Truth

In Michael Ruse's recent publications, such as Taking Darwin Seriously (1998) and Evolutionary Naturalism (1995), he has advocated a certain sort of evolutionary epistemology and has argued that it implies a rejection of metaphysical realism (MR) in favor of a position that he calls "internal realism" (IR). Additionally, he has maintained that, insofar as his evolutionary epistemology implies a rejection of MR in favor of IR, it escapes the kind of argument against naturalism that Alvin Plantinga makes in his Warrant and Proper Function (1993). In this article I explain the relevant views and arguments of Ruse and Plantinga, and I critically engage with Ruse's views, arguing that (1) his case for rejecting MR has no essential connection to evolutionary considerations; (2) his case for rejecting MR depends upon internalist assumptions about the nature of knowledge that are in need of some kind of defense; and (3) given his implicit internalism and his commitment to IR, his argument for rejecting MR can be used against his IR.     

整体运动知觉老化的方向不同步性及其总效应

采用随机点阵范式和实验内元分析技术,首次分离水平、垂直、旋转和径向运动形式下两两对立方向的运动一致性阈值,探究整体运动知觉(GMP)老化的方向不同步性及总效应。结果发现:四种运动形式下,老年组阈值均显著高于青年组,且元分析显示两组阈值之差的效应量大于0,表明相对于青年人,老年人的GMP存在显著下降。同时,老年组向右、向下、顺时针和外扩方向的阈值显著高于其对立方向及青年组,表明老年人这些方向的GMP衰退更加严重,提示GMP的老化存在方向不同步性。     

Perceived Benefits and Costs of Romantic Relationships for Young People: Differences by Adult Attachment Style

Bowlby's attachment theory suggested that the attachment experiences of early childhood influence adult approaches to close relationships. As a result of these experiences, the child develops typical mental schemas or internal working models. The aim of this study was to analyze how young people with different attachment styles perceive the benefits and costs involved in spending as much time as possible with their partner, and to determine whether their beliefs reflect the internal working models associated with their attachment style. A sample of 1,539 university students responded to the Relationship Questionnaire (Bartholomew & Horowith, 1991), and to a questionnaire about behavioral beliefs (perceived benefits and costs). Results show that young people with different attachment styles hold different beliefs about the consequences derived from engaging in a specific behavior in romantic relationships. Secure and preoccupied individuals perceived more benefits than costs associated with the behavior, whereas dismissing and fearful individuals perceived more costs than benefits. Furthermore, secure and preoccupied individuals rated those behavioral consequences leading to enhanced intimacy or closeness more positively than avoidant individuals, whereas dismissing individuals rated more negatively those consequences that involved a loss of independence. These results confirm that a congruity exists between the beliefs associated with the behavior studied and the internal working models related to each adult attachment style.     

维度比较:个体内不同领域的比较

维度比较是指个体将自身某一目标领域的能力与自身标准领域的能力相比较的过程,它是继社会比较和时间比较之后又一重要比较方式。当比较领域性质差异较大,即当比较领域之间进行"远比较"时,会发生强烈的对比效应。随着比较领域性质差异逐渐缩小,即当比较领域之间进行"近比较"时,对比效应会逐步减小,甚至会发生同化效应。维度比较和社会比较都对自我概念具有显著影响,但社会比较的作用明显大于维度比较。未来研究应考虑进一步扩展维度比较的应用范围、加强和其它比较方式的整合、改善其研究方法。     

A review and analysis of research on the test–retest reliability of professional judgment

This paper analyzes existing research on the test–retest reliability of human judgment, i.e. the extent to which a judge makes identical judgments when presented with identical stimuli on two occasions. Only research involving professional judges who make experimental judgments in a reasonable analog of their everyday experience is included. Studies of both internal consistency reliability and temporal stability reliability are analyzed (where the former refers to the inclusion of repeat stimuli in the same experimental session, and the latter refers to the repeating of the experimental task from a few days to several months later). It is found that (1) the test–retest reliability literature is concentrated in four substantive judgment areas (medicine/psychology, meteorology, human resources management, and business), (2) the literature is extremely variable in terms of research approach/design, the determinants or correlates of test–retest reliability that have been studied, and the quality of the execution and analysis, and (3) mean test–retest reliability differs across both substantive judgment areas and the internal consistency versus temporal stability distinction. An inescapable conclusion from the analysis is that our knowledge of this fundamental property of human judgment is quite meager. Therefore, the paper concludes with suggestions about future research that would address test–retest reliability more systematically. Copyright © 2000 John Wiley & Sons, Ltd.