Rough‐and‐tumble play in human children

Rough and tumble (R&T) play is a unique set of behaviors that can be reliably distinguished from aggression and other childhood activities. Although it may be the most fundamental form of play, it has received comparatively little experimental attention in the human species. Forty children, ages three to six, were allowed to play in pairs (10 male pairs, 10 female pairs) during a 30 minute videotaped session with no toys available while music played in the background during every other five‐minute time period. The incidence frequency of children's play and related behavioral activities were scored using 20 behavioral categories. The major findings show only modest gender differences in the frequency of play behaviors in such controlled social encounters; the main difference is that boys engaged in slightly more physical play solicitations than girls. Music facilitated General Motor Activities (e.g., Running and Walking behaviors), but not specific R&T play actions (e.g., Wrestling, Ventral and Dorsal contacts). Finally, most play behaviors as well as general activities declined systematically over the course of each recording session. This experiment highlights how human social play can be systematically studied in a controlled laboratory setting. Aggr. Behav. 29:539–551, 2003. © 2003 Wiley‐Liss, Inc.     

Quantum Mechanics and "Song of Myself": Getting a Grip on Reality

Most recent writing linking science and literature has concerned itself with challenges to the epistemological status of scientific knowledge in an attempt to demonstrate its contingency, arguing in the more radical efforts that the structures of science are no more than useful fictions. This essay also includes an epistemological comparison between science and literature, but instead of making grand or meta–statements about the nature of knowing generally in the two fields, mine is a much narrower aim. My exploration entails two tasks. First, I provide a close–up look at a particular type of experiment, called the delayed–choice experiment, which clearly reveals the strangeness of the quantum world. In connection with this experiment, I discuss wave functions—mathematical expressions used by physicists to describe quantum behavior and predict the outcome of experiments involving quanta. Second, I look at Walt Whitman's “Song of Myself” focusing on the meaning of the “self” in the poem. My aim is to treat the object of study in each field as a “text” and to assert and demonstrate a parallel in the strategies of thought and response between physicists (“readers”) pondering the meaning and status of a wave function and poem readers pondering the meaning and status of the poem's self. In Whitman's “Song” we find an attempt to understand complex aspects of human experience that are said to transcend ordinary reality, an effort for which I believe there are parallels in the attempts of modern physicists to understand complex, nonintuitive aspects of the subatomic world. While not making the kind of broad claims eschewed above, I do suggest that this focused study has interesting implications since both the wave function and the poem's self force their respective sets of “readers” to confront questions of ultimacy—to consider, that is, epistemological and ontological issues of more than passing interest to students of science as well as those of metaphysics and theology.     

Some Comments on The Problem of Reductionism in Contemporary Physical Science

Is reductionism simply a methodology that has allowed science to progress to its current state (methodological reductionism), or does this methodology indicate something more, that the material universe is determined in full by its smallest components (ontological or causal reductionism)? Such questions lie at the heart of much of the contemporary religion–science dialogue. In this essay I suggest that the position articulated by philosopher–theologian Bernard Lonergan is particularly suitable for dealing with these questions. For Lonergan, the criterion of the real is simply its verified intelligibility and not its imaginability. Each of the various levels of reality, as studied in sciences such as physics, chemistry, biology, and sensitive and rational psychology, consists of an intelligible integration of what on the lower level would be simply random occurrences. The things studied by the various sciences (atoms, molecules, cellular organisms, animals, human persons, and so on) are intelligible unities, and no one level is somehow more real than any other. I argue that such a scheme, while seeming somewhat counterintuitive, is best able to deal with the multilayered reality of the contemporary physical and life sciences and provide an opening to the richness of the social sciences and the achievements of human culture.     

Religion, Science, and Evolution: Paul Tillich's Fourth Way

Abstract. In his book God After Darwin John Haught provides a useful categorization of theological approaches to evolution: some theologians actively oppose Darwinian evolution, another group maintains that science and religion have nothing to say to one another, and a third seeks to engage evolution. Haught wishes to pursue the third way. But many theological attempts to talk about divine action in the world, including divine involvement in the process of evolution, run afoul of the scientific principle of the conservation of matter‐energy. Haught's reliance on the now‐familiar notion that information can have causal efficacy does not in fact escape this difficulty. I suggest a fourth approach, represented by a constructive reading of Paul Tillich's theology. The central argument is that Tillich offers a way of taking Darwinian evolution up into one's ultimate concern without claiming that God has any causal relation to evolution. God provides no historical telos for evolution, but rather a “depth teleology” that springs from the manner in which God, as the depth of the structure of finite being, is the object of Christian faith.     

Teaching Genesis: A Present-Day Approach Inspired by the Prophet Nathan

The prophets Nathan (2 Samuel 12:1–15) and John the Baptist (Mark 6:16–28) had comparable tasks before them: to convince their respective kings about the wrongs of taking somebody else's wife and marrying her. Nathan succeeded, while John failed and furthermore lost his life. What made the difference? One possible explanation is that Nathan proceeded in two steps: (1) Tell an interesting, nonthreatening story that nevertheless makes the point at issue; (2) transfer that message to the case at hand. In contrast, John used a direct approach, which raised apprehension, even fear (on the part of Herodias, the woman involved), and led to failure. That lesson has wider applications, as illustrated here for teaching the biblical Genesis narration. The other ingredient in this teaching is relational and contextual reasoning (RCR), the use of which is also indicated for other issues besides teaching Genesis.     

Memories from the cradle

How far back can we, as adults, remember details of our life experiences? Current popular and scientific beliefs are contradictory, with the latter stipulating that personal memories do not begin until the late preschool years (age 4–5 years) and the former claiming that we not only remember being born, but can also remember in utero experiences. In this review, these beliefs are examined in a scientific context and evaluated in terms of empirical data about the development of early memory. The theory proposed here is that memories for personal experiences are not possible until the advent of the cognitive self, around the age of 18 to 24 months. This age is much earlier than that proposed as the age of the earliest memories in other scientific accounts and much later than that proposed in popular beliefs about early memory. New data from a cross-sectional and longitudinal study of early memory development and the emergence of the self clearly show the origins of personal memory coincide with the emergence of the early self.     

Behavior in adulthood and during aging is affected by contaminant exposure in utero

Environmental contaminants can alter the course of neural development, with consequences that appear in behavior. Such effects extend into adulthood and sometimes accelerate the rate of aging, even when exposure ceases by birth. The neurotoxicant methylmercury provides an interesting case study that reveals much about how disrupted neural development has lifelong consequences. Methylmercury also provides an example of the assessment and management of risks associated with exposure to developmental neurotoxicants.     

孟子对传统天命报应论的创造性转化--兼论性善论的价值合理性

在建立以性善论为核心的道德天命观过程中,文化根基的问题观照和传统文化的资源借续是孟子的理论立足点。通过以性善言天善、以心性的价值合理性印证天命的价值理性和“德福合一”的新解释,孟子重建了人的道德信仰,完成了对天命报应论的全新构想。心性的价值合理性与天命的价值理性之间的相互印证,是孟子性善论及其天命观中最有创意的理论运思。     

知情同意的临床实践存在的问题及对策

临床医疗实践中贯彻实施知情同意原则旨在保护病人的权益不受侵犯,然而知情同意原则实施起来并不简单,它常常会受到主客体两方面种种因素的制约,陷入意想不到的困境。分析了知情同意原则在实施过程中可能出现的一些难以回避的问题,并针对这些问题探讨了若干对策。