The allegedly alternative theories of Phyletic Gradualism and Punctuated Equilibria are examined as regards the nature of their differences. The explanatory value of both models is determined by establishing their actual connection with reality. It is concluded that they are to be considered complementary rather than mutually exclusive at all levels of infraspecific, specific, and supraspecific evolution. So, in order to be described comprehensively, the pathways of evolution require at least two distinct models, each based on a discrete range of (...) real phenomena. [Phyletic Gradualism; Punctuated Equilibria; evolutionary theories; divergence models; additive speciation; microevolution; macroevolution; anagenesis.]. (shrink)

Many attempts have been made at supporting either one of the allegedly complementary divergence models Phyletic Gradualism and Punctuated Equilibria by patterns found in specific fossil sequences. However, assessing each model's connection with reality via such “individual case histories” appears not to constitute a relevant approach. Instead, in order to correctly establish the possible merits of both concepts, the claims of each have to be verified against general evolutionary theory. This is being pointed out herein by analyzing cladogenesis at the (...) specific level as an example. [Phyletic Gradualism; Punctuated Equilibria; evolutionary theory; divergence models; case histories; additive speciation.]. (shrink)

The allegedly alternative theories of Phyletic Gradualism and Punctuated Equilibria are examined as regards the nature of their differences. The explanatory value of both models is determined by establishing their actual connection with reality. It is concluded that they are to be considered complementary rather than mutually exclusive at all levels of infraspecific, specific, and supraspecific evolution. So, in order to be described comprehensively, the pathways of evolution require at least two distinct models, each based on a discrete range of (...) real phenomena. [Phyletic Gradualism; Punctuated Equilibria; evolutionary theories; divergence models; additive speciation; microevolution; macroevolution; anagenesis.]. (shrink)

Many attempts have been made at supporting either one of the allegedly complementary divergence models Phyletic Gradualism and Punctuated Equilibria by patterns found in specific fossil sequences. However, assessing each model's connection with reality via such “individual case histories” appears not to constitute a relevant approach. Instead, in order to correctly establish the possible merits of both concepts, the claims of each have to be verified against general evolutionary theory. This is being pointed out herein by analyzing cladogenesis at the (...) specific level as an example. [Phyletic Gradualism; Punctuated Equilibria; evolutionary theory; divergence models; case histories; additive speciation.]. (shrink)

This essay is part of an attempt to reconcile two extreme views in economics: the (neglected) subjective, apriorist approach and the (standard) objective, scientific (i.e., falsifiable) approach. The Austrian subjective view of value, building on Carl Menger’s theory of value, was developed into a theory of economics as being entirely an a priori theory of action. This probably finds its most extreme statement in Ludwig von Mises’ Human Action (1949). In contrast, the standard economic view has developed into making falsifiable (...) predictions about economic phenomena whereby the truth of the assumptions, especially about economic agents, is relatively unimportant: predictive fecundity is all. This finds an extreme statement in Milton Friedman’s introductory essay in his Essays in Positive Economics (1953). However, many economists fall somewhere between the two extremes, such as McKenzie and Tullock (1978). (shrink)

Austria, by the end of the nineteenth century, clearly lagged behind its more developed Western neighbours in matters of intellect and science. The Empire had witnessed a relatively late process of urbanization, bringing also a late development of those liberal habits and values which would seem to be a presupposition of the modern, scientific attitude. It therefore lacked institutions of scientific research of the sort that had been founded in Germany since the time of von Humboldt. On the other hand, (...) as more liberal ways began to be established in Austria - effectively in the second half of the nineteenth century - the desire to enjoy the trappings of a modern enlightened culture made itself felt. The Austrians were not of course in a position to summon forth the means to create reputable institutions and traditions of science in the narrow sense, and this created a vacuum which the theory of a practice so attractively pursued elsewhere could then fill. (shrink)

Der Aufsatz schildert den platonisierenden Antipsychologismus welchen Bolzano, der junge Brentano, Twardowski, Meinong, der Husserl der Logischen Untersuchungen, Frege, der Russell der Jahrhundertwende und der junge Wittgenstein philosophisch vertraten, und versucht eine soziologische und ideologiekritische Interpretation sowohl dieser Einstellung als auch derjenigen des traditionellen Psychologismus des achtzehnten Jahrhunderts. Der Platonismus des neunzehnten und zwanzigsten Jahrhunderts wird als ein Ausdruck fiir - oder vielmehr als eine Reaktion gegen - den Verfall der klassischen burgerlichen Werte aufgefaBt. In Wittgensteins Tractatus spielen Elemente sowohl (...) eines platonisierenden Antipsychologismus wie auch eines relativistischen, verhaltensphanomenologisch orientierten Antipsychologismus eine Rolle: dieses Werk wird also als eine grelle Manifestation des Uberganges von der klassischen zur spatbiirgerlichen Weltanschauung, als ein Obergang vom Glauben an ewige Wahrheiten zur Hinnahme einer Gebrauchs-Theorie der Bedeutung und deren Konsequenzen interpretiert. (shrink)

Der Aufsatz schildert den platonisierenden Antipsychologismus welchen Bolzano, der junge Brentano, Twardowski, Meinong, der Husserl der Logischen Untersuchungen, Frege, der Russell der Jahrhundertwende und der junge Wittgenstein philosophisch vertraten, und versucht eine soziologische und ideologiekritische Interpretation sowohl dieser Einstellung als auch derjenigen des traditionellen Psychologismus des achtzehnten Jahrhunderts. Der Platonismus des neunzehnten und zwanzigsten Jahrhunderts wird als ein Ausdruck fiir ? oder vielmehr als eine Reaktion gegen ? den Verfall der klassischen burgerlichen Werte aufgefaBt. In Wittgensteins Tractatus spielen Elemente sowohl (...) eines platonisierenden Antipsychologismus wie auch eines relativistischen, verhaltensphanomenologisch orientierten Antipsychologismus eine Rolle: dieses Werk wird also als eine grelle Manifestation des Uberganges von der klassischen zur spatbiirgerlichen Weltanschauung, als ein Obergang vom Glauben an ewige Wahrheiten zur Hinnahme einer Gebrauchs?Theorie der Bedeutung und deren Konsequenzen interpretiert. (shrink)

Der ungarische Philosoph Melchior (Menyhert) Palägyi hatte niemals eine unmittelbare Kritik der Meinongschen Philosophie verfaßt; 1902 erwog er sogar die Möglichkeit, sich bei Meinong zu habilitieren. Dennoch ist die Gegenstandstheorie Meinongs durch die von Palägyi aufgebaute, sprachphilosophisch begründete Widerlegung des logischen Objektivismus eines Bolzano oder Husseri an sich zweifellos ebenfalls berührt. Palägyis Kritik an dem modernen Piatonismus, durch Herder, Max Müller und vermutlich Nietzsche beeinflußt, die bezüglichen Argumente des späteren Wittgenstein und von Eric Havelock in gar mancher Hinsicht vorwegnehmend, ist (...) weitgehend unbekannt und unbeachtet geblieben. Indem der Aufsatz die Prinzipien dieser Kritik nun eben auf die Gegenstandstheorie anwendet, sollen gewisse grundsätzliche Züge der Meinongschen Begriffsbildung in einer geschichtlich angemessenen Weise kritisch beleuchtet werden. (shrink)

Der ungarische Philosoph Melchior (Menyhert) Palägyi hatte niemals eine unmittelbare Kritik der Meinongschen Philosophie verfaßt; 1902 erwog er sogar die Möglichkeit, sich bei Meinong zu habilitieren. Dennoch ist die Gegenstandstheorie Meinongs durch die von Palägyi aufgebaute, sprachphilosophisch begründete Widerlegung des logischen Objektivismus eines Bolzano oder Husseri an sich zweifellos ebenfalls berührt. Palägyis Kritik an dem modernen Piatonismus, durch Herder, Max Müller und vermutlich Nietzsche beeinflußt, die bezüglichen Argumente des späteren Wittgenstein und von Eric Havelock in gar mancher Hinsicht vorwegnehmend, ist (...) weitgehend unbekannt und unbeachtet geblieben. Indem der Aufsatz die Prinzipien dieser Kritik nun eben auf die Gegenstandstheorie anwendet, sollen gewisse grundsätzliche Züge der Meinongschen Begriffsbildung in einer geschichtlich angemessenen Weise kritisch beleuchtet werden. (shrink)

Since the publication of our article on Thucydides and the Plague of Athens, Dr Heinrich von Staden of Yale University has kindly drawn our attention to a paper by Eby and Evjen suggesting that the Plague was glanders. We do not think that this diagnosis can possibly be correct, though there are undoubtedly some points in its favour. The authors have argued their case as persuasively as possible, and the proposal has sufficient merit to deserve a serious reply.

In a previous paper we have shown that in quantum chromodynamics the gluon propagator vanishes in the infrared limit, while the ghost propagator is more singular than a simple pole. These results were obtained after angular averaging, but in the current paper we go beyond this approximation and perform an exact calculation of the angular integrals. The powers of the infrared behaviour of the propagators are changed substantially. We find the very intriguing result that the gluon propagator vanishes in the (...) infrared exactly like p2, whilst the ghost propagator is exactly as singular as 1/p4. We also find that the value of the infrared fixed point of the QCD coupling is much decreased from the y-max estimate: it is now equal to 4π/3. Following a recent study by von Smekal et al.[1], we analyzed in Ref.[2] the coupled Dyson- Schwinger equations for the gluon and ghost form factors F and G. The approximations were two-fold: firstly the vertices were taken bare, and secondly angular averaging was introduced (the so-called y-max approximation). Deferring to later work an improvement of the vertices. (shrink)

Wittgenstein finished part 1 of the _Philosophical Investigations_ in the spring of 1945. From 1946 to 1949 he worked on the philosophy of psychology almost without interruption. The present two-volume work comprises many of his writings over this period. Some of the remarks contained here were culled for part 2 of the _Investigations_; others were set aside and appear in the collection known as Zettel. The great majority, however, although of excellent quality, have hitherto remained unpublished. This bilingual edition of (...) the _Remarks on the Philosophy of Psychology_ presents the first English translation of an essential body of Wittgenstein's work. It elaborates Wittgenstein's views on psychological concepts such as expectation, sensation, knowing how to follow a rule, and knowledge of the sensations of other persons. It also shows strong emphasis on the "anthropological" aspect of Wittgenstein's thought. Philosophers, as well as anthropologists, psychologists, and sociologists will welcome this important publication. (shrink)

Wittgenstein finished part 1 of the _Philosophical Investigations_ in the spring of 1945. From 1946 to 1949 he worked on the philosophy of psychology almost without interruption. The present two-volume work comprises many of his writings over this period. Some of the remarks contained here were culled for part 2 of the _Investigations_; others were set aside and appear in the collection known as Zettel. The great majority, however, although of excellent quality, have hitherto remained unpublished. This bilingual edition of (...) the _Remarks on the Philosophy of Psychology_ presents the first English translation of an essential body of Wittgenstein's work. It elaborates Wittgenstein's views on psychological concepts such as expectation, sensation, knowing how to follow a rule, and knowledge of the sensations of other persons. It also shows strong emphasis on the "anthropological" aspect of Wittgenstein's thought. Philosophers, as well as anthropologists, psychologists, and sociologists will welcome this important publication. (shrink)

This article addresses the ability of Parallel Distributed Processing (PDP) networks to generate stagewise cognitive development in accordance with Piaget's theory of cognitive epigenesis. We carried out a replication study of the simulation experiments by McClelland (1989) and McClelland and Jenkins (1991) in which a PDP network learns to solve balance scale problems. In objective tests motivated from catastrophe theory, a mathematical theory of transitions in epigenetical systems, no evidence for stage transitions in network performance was found. It is concluded (...) that PDP networks lack the ability to recover the positive outcomes of analogous catastrophe analyses of real cognitive developmental data. In an attempt to further characterize the learning behaviour of PDP networks, we carried out a second simulation study using the discrimination‐shift paradigm. The results thus obtained indicate that PDP learning is compatible with the learning of stimulus‐response relationships, not with the acquisition of mediating rules such as conceived in (neo‐)Piagetian theory. In closing, we speculate about the feasibility of simulating stagewise development with alternative network architectures. (shrink)

Early versions of satellite and radiosonde datasets suggested that the tropical surface had warmed more than the troposphere, while climate models consistently showed tropospheric amplification of surface warming in response to human-caused increases in greenhouse gases. We revisit such comparisons here using new observational estimates of surface and tropospheric temperature changes. We find that there is no longer a serious discrepancy between modeled and observed trends in the tropics. Our results contradict a recent claim that all simulated temperature trends in (...) the tropical troposphere are inconsistent with observations. This claim was based on the use of older radiosonde and satellite datasets and on two methodological errors: the neglect of observational trend uncertainties introduced by interannual climate variability and application of an inappropriate statistical “consistency test”.This emerging reconciliation of models and observations has two primary explanations. First, because of changes in the treatment of buoy and satellite information, new surface temperature datasets yield slightly reduced tropical warming relative to earlier versions. Second, recently developed satellite and radiosonde datasets now show larger warming of the tropical lower troposphere. In the case of a new satellite dataset from remote sensing systems, enhancedRSS warming is due to an improved procedure of adjusting for inter-satellite biases. When the RSS-derived tropospheric temperature trend is compared with four different observed estimates of surface temperature change, the surface warming is invariably amplified in the tropical troposphere, consistent with model results. Even if we use data from a second satellite dataset with smaller tropospheric warming than in remote sensing systems RSS, observed tropical lapse rates are not significantly different from those in all model simulations.Our results contradict a recent claim that all simulated temperature trends in the tropical troposphere and in tropical lapse rates are inconsistent with observations. This claim was based on the use of older radiosonde and satellite datasets and on two methodological errors: the neglect of observational trend uncertainties introduced by interannual climate variability and application of an inappropriate statistical “consistency test”. (shrink)

BACKGROUND: Serotonin transporter promoter genotype appears to increase risk for depression in the context of stressful life events. However, the effects of this genotype on measures of stress sensitivity are poorly understood. Therefore, this study examined whether 5-HTTLPR genotype was associated with negative information processing biases in early childhood. METHOD: Thirty-nine unselected seven-year-old children completed a negative mood induction procedure and a Self-Referent Encoding Task designed to measure positive and negative schematic processing. Children were also genotyped for the 5-HTTLPR gene. (...) RESULTS: Children who were homozygous for the short allele of the 5-HTTLPR gene showed greater negative schematic processing following a negative mood prime than those with other genotypes. 5-HTTLPR genotype was not significantly associated with positive schematic processing. LIMITATIONS: The sample size for this study was small. We did not analyze more recently reported variants of the 5-HTTLPR long alleles. CONCLUSIONS: 5-HTTLPR genotype is associated with negative information processing styles following a negative mood prime in a non-clinical sample of young children. Such cognitive styles are thought to be activated in response to stressful life events, leading to depressive symptoms; thus, cognitive styles may index the "stress-sensitivity" conferred by this genotype. (shrink)

OBJECTIVES: Early-emerging, temperamental differences in fear-related traits may be a heritable vulnerability factor for anxiety disorders. Previous research indicates that the serotonin transporter promoter region polymorphism is a candidate gene for such traits. METHODS: Associations between 5-HTTLPR genotype and indices of fearful child temperament, derived from maternal report and standardized laboratory observations, were examined in a community sample of 95 preschool-aged children. RESULTS: Children with one or more long alleles of the 5-HTTLPR gene were rated as significantly more nervous during (...) standardized laboratory tasks than children who were homozygous for the short alleles. Children homozygous for the short alleles were also rated as significantly shyer, by maternal report, than those with at least one copy of the long allele of the 5-HTTLPR gene. CONCLUSIONS: This study extends the literature linking the short alleles of the serotonin transporter promoter region polymorphism to fear and anxiety-related traits in early childhood and adulthood, and is one of very few studies to examine the molecular genetics of preschoolers' temperament using multiple measures of traits in a normative sample. (shrink)

Inattentional blindness is described as the failure to perceive a supra-threshold stimulus when attention is directed away from that stimulus. Based on performance on an explicit recognition memory test and concurrent functional imaging data Rees, Russell, Frith, and Driver [Rees, G., Russell, C., Frith, C. D., & Driver, J. . Inattentional blindness versus inattentional amnesia for fixated but ignored words. Science, 286, 2504–2507] reported inattentional blindness for word stimuli that were fixated but ignored. The present study examined both explicit and (...) implicit memory for fixated but ignored words using a selective-attention task in which overlapping picture/word stimuli were presented at fixation. No explicit awareness of the unattended words was apparent on a recognition memory test. Analysis of an implicit memory task, however, indicated that unattended words were perceived at a perceptual level. Thus, the selective-attention task did not result in perfect filtering as suggested by Rees et al. While there was no evidence of conscious perception, subjects were not blind to the implicit perceptual properties of fixated but ignored words. (shrink)

Newman’s defense of the role of the laity in the development of doctrine not only occasioned a negative reaction from the Vatican, it had continued reverberations among his followers.This essay examines Newman’s influence on Baron Friedrich von Hügel and then compares the Baron’s positions with those Newman’s biographer, Wilfred Ward.