Pragmatic Unification, Observation and Realism in Astroparticle Physics

Astroparticle physics is a recent sub-discipline of physics that emerged from early cosmic ray studies, astrophysics, and particle physics. Its theoretical foundations range from quantum field theory to general relativity, but the underlying “standard models” of cosmology and particle physics are far from being unified. The paper explores the pragmatic strategies employed in astroparticle physics in order to unify a disunified research field, the concept of observation involved in these strategies, and their relations to scientific realism.     

Intuitions in physics

This paper is an exploration of the role of intuition in physics. The ways in which intuition is appealed to in physics are not well understood. To the best of my knowledge, there is no analysis of the different contexts in which we might appeal to intuition in physics, nor is there any analysis of the different potential uses to which intuition might be put. In this paper I look to provide data that goes some way to giving a sense of the different contexts in which intuition is appealed to in physics. As I note in the conclusion, there is still much work to be done but I hope that the work here provides us with a first step in the journey to properly understand the use to which intuitions are put in physics and science more generally.     

Reflexionen über die Struktur der Physikalischen Sprache

The aim of this paper is to discuss how far physics differs frommathematics, and if a philosophy of science which uses mathematics or logicsas a model for physics would be unable to be aware of many importantfeatures of that natural science.Many functions in physics differ from those of mathematics in beingfunctional dependecies and in having a lawlike character.Physical quantities have the character of "`determinables"', sets ofspecial entities which are presupposed by physical theories.One may suspect that physics also could not be formulated in anextensional language. This cannot be true, however, since every language canbe translated into an extensional version. Neverthless the existence ofdeterminables in physics shows that physics does not only talk aboutconcrete entities like space, time, spacetime, and particles, but also aboutvalues of abstract sets like determinables, and that it thus acknowledgestheir existence.     

Assessing Students' Misclassifications of Physics Concepts: An Ontological Basis for Conceptual Change

Physics novices and experts solved conceptual physics problems involving light, heat, and electric current and then explained their answers. Novices were ninth-grade students with no background in physics; experts were two postgraduates in physics and two advanced physics graduate students. Problems were multiple choice, with one correct response and three alternative responses representing possible misconceptions. For each conceptual physics problem, an isomorphic material-substance problem was constructed by imagining a materialistic conception of the physics topic and creating the resulting version of the problem. In each physics problem, one of the incorrect choices corresponded to the correct choice in the isomorphic material-substance problem. The empirical question was whether novices would reason about the physics problem as if it were conceptually similar to the substance isomorph. This question was addressed by comparing subjects' responses in the problem pairs, as well as by examining their explanations concerning all problems. A content analysis of subjects' explanations revealed that physics novices were strongly inclined to conceptualize physics concepts as material substances, whereas expert protocols revealed distinctly nonmaterialistic representations. A theory of conceptual change involving ontologically distinct categories is substantiated by these findings.     

Familiarity and word recognition

Word recognition was examined for physics and non-physics students after a single visual presentation of a series of sixty words. Physics words likely to be familiar only to physics subjects were used to vary the prior familiarity of the two groups with the inspection material and the ratio of physics to common words (salience) was varied for each of the three inspection series. Common words, which were expected to have greater salience than physics words in one of the inspection series, were not found to be recognized better than the control pairings of physics words by either group of subjects. The absence of differences between physics and non-physics students in the number of inspection list words (positive instances) correctly identified supports the view that prior familiarity is not a critical variable when all inspection items are presented in a recognition test. Physics students made fewer errors than non-physics students in identifying both physics and common words in the the recognition test which were not in an inspection series (negative instances). It is suggested that the correct identification of negative instances involves a scanning of a subject's “internal store” of previously experienced inspection items and that this is more efficient when the meaning of all the items in this “store” is known.     

学习环境、成就目标定向对学业情绪和学业成就的影响:基于物理学科的研究

以733名中学生为被试,采用结构方程模型对物理环境目标结构、成就目标定向、物理学业情绪及物理学业成就的关系建构模型.结果发现:(1)物理环境掌握目标结构对积极高唤醒、积极低唤醒和消极高唤醒学业情绪皆有显著积极预测作用,而物理环境表现目标结构则只对消极高唤醒和消极低唤醒物理学业情绪有显著积极预测作用;(2)通过成就目标定向中介对物理学业情绪的影响效果,物理学业情绪在成就目标和物理学业成就之间起中介作用,但影响模式不同;(3)研究结果支持学业情绪控制-价值扩展模型.     

INTERPRETATION NEUTRALITY FOR QUANTUM THEOLOGY

Within contemporary scientific and science-adjacent communities, it is generally accepted that quantum physics is our best theory. For this reason, it is understandable—and laudable—that scholars interested in questions at the intersection of science and theology wish to meaningfully engage with this physics. Recent work in foundations of physics has, however, importantly altered the landscape of quantum theory; in this article, my goal is to introduce these advances, then make an argument within this new landscape that I hope will be useful for certain theological inquiries. Specifically, I shall argue from grounds of the physics itself that one may, with clear philosophical conscience, access the majority of quantum theory's tools, models, and explanations while maintaining an interpretation-neutral yet realist stance toward this physics.     

Intuitive physics and cognitive algebra: A review

IntroductionIntuitive physics explores how people without a formal instruction in physics intuitively understand physical phenomena. After a general overview of the topics of current research in intuitive physics and a discussion of current debates, this paper provides an introduction to Information Integration Theory (IIT).ObjectiveBy means of examples, it is shown how IIT can be used to directly compare the algebraic structure of physical laws and the algebraic structure of cognitive representations of these laws.MethodThe review considers about 40 years of research on the application of IIT in the field of intuitive physics. Occasionally, reference is also made to intuitive physics studies outside this theoretical framework.ResultsThe reviewed studies highlight four main factors that affect the degree of consistency between physical laws and cognitive algebraic laws: the participants’ age, their familiarity with the event under study, the type of task, and possible learning processes.ConclusionThe last part of the article discusses the implications of the results of the reviewed studies for the two main current hypotheses on the nature of intuitive physics, namely, that intuitive physics may be based on sub-optimal heuristics or may be based on the internalization of physical laws.     

Biological knowledge is more tentative than physics knowledge: Taiwan high school adolescents' views about the nature of biology and physics

Many educational psychologists believe that students' beliefs about the nature of knowledge, called epistemological beliefs, play an essential role in their learning process. Educators also stress the importance of helping students develop a better understanding of the nature of knowledge. The tentative and creative nature of science is often highlighted by contemporary science educators. However, few previous studies have investigated students' views of more specific knowledge domains, such as biology and physics. Consequently, this study developed a questionnaire to assess students' views specifically about the tentative and creative nature of biology and physics. From a survey of 428 Taiwanese high school adolescents, this study found that although students showed an understanding of the tentative and creative nature of biology and physics, they expressed stronger agreement as to the tentativeness of biology than that of physics. In addition, male students tended to agree more than did females that physics had tentative and creative features and that biology had tentative features. Also, students with more years of science education tended to show more agreement regarding the creative nature of physics and biology than those with fewer years.     

Strategies of model-building in condensed matter physics: trade-offs as a demarcation criterion between physics and biology?

This paper contrasts and compares strategies of model-building in condensed matter physics and biology, with respect to their alleged unequal susceptibility to trade-offs between different theoretical desiderata. It challenges the view, often expressed in the philosophical literature on trade-offs in population biology, that the existence of systematic trade-offs is a feature that is specific to biological models, since unlike physics, biology studies evolved systems that exhibit considerable natural variability. By contrast, I argue that the development of ever more sophisticated experimental, theoretical, and computational methods in physics is beginning to erode this contrast, since condensed matter physics is now in a position to measure, describe, model, and manipulate sample-specific features of individual systems—for example at the mesoscopic level—in a way that accounts for their contingency and heterogeneity. Model-building in certain areas of physics thus turns out to be more akin to modeling in biology than has been supposed and, indeed, has traditionally been the case.     

A psychometric approach to intuitive physics

The literature on intuitive physics shows that many people exhibit systematic errors when predicting the behavior of simple physical events. Most previous research has attributed these errors to factors specific to a certain class of tasks. In the present study, we investigated the possibility that intuitive physics performance may be related to general measures of cognitive ability. Two hundred four adults (ages, 20-91 years) were presented with five pairs of intuitive physics questions. It was found that performance on the intuitive physics items was moderately intercorrelated, suggesting that they were tapping into a unitary construct. Despite the correlation with factors that decline with advancing age, intuitive physics performance was not correlated with age (r= .00). The findings are discussed in the context of research on intuitive physics, as well as research on cognitive aging.     

Holism in Cartesianism and in Today's Philosophy of Physics

The aim of this paper is to contribute to a more balanced judgement than the widespread impression that the changes which are called for in today's philosophy of physics and which centre around the concept of holism amount to a rupture with the framework of Cartesian philosophy of physics. I argue that this framework includes a sort of holism: As a result of the identification of matter with space, any physical property can be instantiated only if there is the whole of matter. Relating this holism to general relativity, I maintain that this holism cannot be directly applied to today's philosophy of physics consequent upon the failure of geometrodynamics. I show in what respect precisely the holism in quantum physics amounts to a revision of the holism within Cartesianism. This revised version was published online in August 2006 with corrections to the Cover Date.     

McTaggart and Modern Physics

This paper delves into McTaggart’s metaphysical account of reality without time, and compares and contrasts McTaggart’s account with the account of reality given by modern physics. This comparison is of interest, because there are suggestions from contemporary physics that there is no time at the fundamental level. Physicists and philosophers of physics recognize that we do not have a good understanding of how the world could be such that time is unreal. I argue that, from the perspective of one who is trying to understand modern physics, McTaggart’s metaphysical views do provide some insight into how reality can be timeless at the fundamental level, but the insight that they provide is limited.     

In defense of psychological laws

It is argued that psychological explanations involve psychological generalizations that exhibit the same features as laws of physics. On the basis of the “systematic theory of lawhood”, characteristic features of laws of nature are elaborated. Investigating some examples of explanations taken from cognitive psychology shows that these features can also be identified in psychological generalizations. Particular attention is devoted to the notion of “ccteris‐paribus laws”. It is argued that laws of psychology are indeed ceteris‐paribus laws. However, this feature does not distinguish them from the laws of physics, because such laws are found in physics as well. Moreover, the laws invoked in psychological explanations are genuine laws of psychology; they are not laws of other disciplines that are brought to bear on psychological problems. The conclusion is that if there are laws of physics then laws of psychology exist as well.     

The methodology of testing naive beliefs in the physics classroom

Many undergraduates harbor a variety of misbeliefs about physical objects in motion--for instance, that a bomb will fall straight down when dropped from a moving airplane. The evidence that these misbeliefs are resistant to correction by college-level physics courses, however, has often been based on methodologies that lack adequate internal validity. We used a quasi-experimental "before and after" design to assess the impact of two college physics courses, and we examined selection-bias, test-retest, and task-format factors directly. Initial accuracy and significant improvements due to instruction varied considerably by problem category and subject group; thus, in several ways, the results refute the general conclusion that conventional physics instruction does little to correct students' misbeliefs. We conclude by advocating the quasi-experimental approach for studies of naive beliefs in physics as well as for other situations in which the impact of classroom instruction is of interest.     

Should physics students take a course in ethics?—Physicists respond

A survey was conducted of a subset of the physics community in order to gain insight into attitudes towards integrating ethics into the physics curriculum. The results indicated significant support among some groups for such an integration yet also revealed significant barriers to this process. Respondents were also asked to suggest topics which should be covered under the heading of ethical issues in physics. The great variety of results indicates both that there are many issues worth investigating and that many in the physics community have given a great deal of thought to these issues.     

简单与复杂物理问题解决及状态元认知

本研究采用认知作业分析及问卷法,研究了中学生简单与复杂物理问题解决的表征机制及状态元认知结构。结果显示：(1)物理问题解决是对问题的表征状态不断转换的过程,其受认知主体信息的提取、转换、整合能力及状态元认知的影响;(2)中学生物理问题解决中的状态元认知主要由他的自我效能感、自我监测、策略系统三种成分构成;(3)复杂问题解决的关链是正确提取范畴性知识以形成对问题的深层表征。     

Aristotle’s Notion of ‘Place’ in the Context of Present-day Physics

The article deals with Aristotle’s conception of ‘place’, which is of cruсial importance for his theory of motion. It is shown that in the physics of Aristotle there is no concept of spасe; instead, there is the notion of ‘place’ of a body (topos). Aristotle considered ‘place’ as the first boundary of a body embracing (containing) the body in question. The author shows the incommensurability between the spatial ideas of the Stagirite and the similar ideas of Newtonian physics. The article states that in order to give an adequate reconstruction of Aristotle’s concept of ‘place’ we need to take into account two different levels of consideration: local and global. Places locally separable (from bodies) cannot be separated on the global level. In Newtonian physics, bodies are separable from places on both levels. The nature of parallelism of ideas between Aristotle’s conception of ‘place’ and the notions of space in present-day physics is analysed.     

智商对物理问题解决表征体系动态特征的影响

基于对物理问题解决表征体系特征的研究,本文用口语报告法,对不同智商水平的被试在解决物理问题过程中表征体系的动态差异进行了实证性研究。结果证明,智商水平对物理问题解决表征体系动态特征的影响显著。     

Continuities in the development of the physical and social sciences: Principles of a new social physics

The original concept of “social physics” was built on positivist philosophy and scientific method. Evidence from quantum physics suggests that a postpositivist “social physics” may yet be viable, not because social science should emulate physics, but because physics is more like social science. The five principles of complementarty, uncertainty, the measurement problem, nonlocal causation, and participatory collusion are presented in this article to demonstrate the contemporary convergence of the physical and social sciences into a new social physics. E. Sam Overman is associate professor of public affairs at the Graduate School of Public Affairs, University of Colorado at Denver, Denver CO 80204. He recently editedMethodology and Epistemology for Social Science, selected papers by Donald T. Campbell (University of Chicago Press, 1988). He has published other articles on policy physics and social science philosophy, and has conducted research and published extensively in the area of information resource policy and management.