多媒体学习中线索原则是否存在经验逆转效应?——来自两项元分析的证据

经验逆转效应指出,对低先备知识者学习有积极作用的教学设计可能对高先备知识者无效,甚至有消极影响。本研究分别对高、低先备知识者进行关于线索对其学习过程中主观认知负荷及学习结果影响的元分析,检验线索原则是否存在经验逆转效应及认知负荷理论能否解释线索原则的经验逆转效应。结果表明,线索能降低低先备知识者学习过程中的主观认知负荷并促进其学习表现;但线索对高先备知识者认知负荷及学习成绩的总效应均不显著。结合元分析结果,本研究证明了在多媒体学习环境下线索原则存在部分经验逆转,且部分支持了线索原则经验逆转效应的认知负荷理论解释。     

Were Kant's Hypothetical Imperatives Wide-Scope Oughts?

I defend the claim that Kant held a wide-scope view of hypothetical imperatives, against objections raised by Mark Schroeder [2005 Schroeder, Mark 2005. The Hypothetical Imperative? Australasian Journal of Philosophy 83/3: 357–72.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]]. There is an important objection, now commonly known as the ‘bootstrapping’ problem, to the alternative, narrow-scope, view which Schroeder attributes to Kant. Schroeder argues that Kant has sufficient resources to reply to the bootstrapping problem, and claims that this leaves us with no good reason to attribute to Kant the wide-scope view. I show that Schroeder's Kantian reply to the bootstrapping problem cannot fully answer it. Schroeder also offers three main textual arguments for attributing to Kant the narrow-scope view: from Kant's claim that the moral imperative is unique in virtue of its categoricity, from Kant's distinction between ‘problematic’ and ‘assertoric’ hypothetical imperatives, and from Kant's conception of analyticity together with his claim that hypothetical imperatives are analytic. I argue that each of these views can be understood as cohering with the more plausible wide-scope view of hypothetical imperatives.     

Alcohol and nicotine intake and prenatal level of androgens measured by digit ratio

The purpose of this study was to examine the associations between using unhealthy substances and the digit ratio (2nd to 4th digit length ratio, 2D:4D) which is supposed to indicate the prenatal testosterone level. The subjects were 455 students, 225 women and 230 men. Participants declared their frequency of smoking and alcohol drinking. There was no significant difference in digit ratios between subjects regularly using both nicotine and alcohol and those who took none of them. When analyzing the two substances separately, there was no relationship between 2D:4D and alcohol drinking, whereas left hand 2D:4D was positively related to smoking only for women (nonsignificant trend was observed for right hand). Contrary to the previous study, our results indicate that there is no relationship between 2D:4D and alcohol drinking. There is, however, a subtle influence of prenatal testosterone levels for cigarette smoking habits in the case of women.     

Nonlinear synthesis and co‐evolution of complex systems

Today a change is imperative in approaching global problems: what is needed is not arm‐twisting and power politics, but searching for ways of co‐evolution in the complex social and geopolitical systems of the world. The modern theory of self‐organization of complex systems provides us with an understanding of the possible forms of coexistence of heterogeneous social and geopolitical structures at different stages of development regarding the different paths of their sustainable co‐evolutionary development. The theory argues that the evolutionary channel to the observed increasing complexity is extremely narrow and only certain discrete spectra of relatively stable self‐maintained structures are feasible in complex systems. There exists a restricted set of ways of assembling a complex evolutionary whole from diverse parts. The law of nonlinear synthesis of complex structures reads: the integration of structures in more complex ones occurs due to the establishment of a common tempo of their evolution. On the basis of the theory, we can see not only desirable but also attainable futures.     

Reflections on catastrophic change

Abstract

The present paper examines the way Freud's letters, in particular the ones to Oskar Pfister and Karl Abraham, were edited. The nature and extent of distortions and cuts are demonstrated, and conclusions are drawn regarding the picture of Freud that emerges. Questions of confidentiality, medical discretion, and archival restrictions are discussed.     

Solute drag or diffusion processes in a migrating thick interface

Hillert proposed a new solute drag formula applicable not only to the migration of grain boundaries, but also to that of interfaces. Svoboda and co-workers derived an expression for the velocity of a migrating thick interface by applying the principle of maximum dissipation. In this article, it is shown that the expressions for the interface velocity, one obtained from Hillert's solute drag formula, and the other derived from the principle of maximum dissipation, are equal for steady-state conditions.     

A concise derivation of the contact conditions at a migrating sharp interface

A sharp interface model can be used to simulate the kinetics of diffusional phase transformations provided the transformation process is controlled by migration of the interface and by diffusion of components in the bulk phases only. The contact conditions at the migrating sharp interface can be derived by applying the principles of mass balance and maximum dissipation. A concise derivation of the contact conditions on this basis is presented in this work.     

Avicenna's Conception of the Efficient Cause

The concept of efficient causation originates with Aristotle, who states that the types of cause include ‘the primary source of the change or rest’. For Medieval Aristotelians, the scope of efficient causality includes creative acts. The Islamic philosopher Avicenna is an important contributor to this conceptual change. In his Metaphysics, Avicenna defines the efficient cause or agent as that which gives being to something distinct from itself. As previous studies of Avicenna's ‘metaphysical’ conception of the efficient cause attest, it takes God as a model agent. This essay considers whether Avicenna's ‘metaphysical’ conception of the efficient cause applies to natural agents. It ultimately argues that Avicenna offers a unified view of the efficient cause, which includes both divine and natural agents. On this view, an efficient cause gives being to another and is simultaneous with its effect. While Avicenna's defence of this view is an important chapter in the history of the concept of the efficient cause, it is also of interest in its own right. By appeal to a version of the principle of sufficient reason, it challenges a widespread view that causes are temporally prior to their effects.     

Fine-Tuning,Atheist Criticism,and the Fifth Way

Abstract

Like the “modern watchmaker” argument formulated by William Paley, the argument from fine-tuning should not be confused with Thomas Aquinas' fifth proof for the existence of God as expressed in the Summa Theologiae. While the former is based on efficient causality, the latter is based upon final causality. Though some atheist criticisms are relevant to the fine-tuning argument, they do not affect the Fifth Way. After briefly expositing the fine-tuning argument, I will argue that Aquinas' argument from the “governance of the world” offers a more convincing proof for God—one that evades atheistic criticisms leveled against design arguments.     

Mary – ‘Mother of the Church’: challenging conciliar ecclesiology

On 21 November 1964, at the end of the third session of the Second Vatican Council, the Constitution on the Church, Lumen Gentium (LG), was solemnly adopted together with its final chapter on Mary. Simultaneously, Pope Paul VI proclaimed the Marian title Mater Ecclesiae. This article will both review the Council’s debate and identify the specifics of the title Mater Ecclesiae. The Council had rejected the idea of awarding this title to Mary, even though chapter VIII of Lumen Gentium mentions her ‘function as mother’ (LG 60). In proclaiming this title, Paul VI did not follow the Council, which had located Mary within the Church. The question therefore arises as to whether Mary, as the ‘Mother of the Church’, is now placed outside the Church.