Transgenic insecticidal Bt crops are being increasingly used worldwide, and concern is increasing about resistance and their effects on nontarget organisms. The toxin acts as a weak pesticide and, hence, the effects are subtler than those of chemical biocides. However, the toxin is ever present, but concentrations vary with age of plant and plant subunit, causing varying lethal and sublethal effects on pest survival, developmental time, and fecundity. Refuges for susceptibility to Bt occur spatially in non-Bt hosts and temporally within (...) the crop because of time-varying toxicity and pest tolerance. Natural enemies feeding on Bt-intoxicated prey may have reduced longevity and, likely, fecundity that reduces their efficacy in controlling pest populations, and pest resurgence and secondary pest outbreaks may occur that may require insecticide use. System modeling is proposed as an efficient tool for examining the use of extant and future biotechnologies in pest control. (shrink)

In light of the recently developed European Union (EU) Biofuels Strategy, the literature is reviewed to examine (a) the coherency of biofuel production with the EU nonindustrial vision of agriculture, and (b) given its insufficient land base, the implications of a proposed bioenergy pact to grow biofuel crops in the developing world to meet EU biofuel demands. The EU acknowledged that the use of food crops for biofuel production was based on wrong assumptions concerning climate change mitigation, and its support (...) has now shifted to second-generation nonfood crops. The bioenergy pact entails (a) biofuel crops production in developing countries, especially Africa, that in the absence of environmental and social regulations may lead to ethical trade-offs in land use (food vs. fuel) and (b) the use of transgenic technology that conflicts with the EU’s own vision of sustainable agriculture. (shrink)

The use of marginal land (ML) for lignocellulosic biofuel production is examined for system stability, resilience, and eco-social sustainability. A North American prairie grass system and its industrialization for maximum biomass production using biotechnology and agro-technical inputs is the focus of the analysis. Demographic models of ML biomass production and ethanol farmer/producers are used to examine the stability properties of the ML system. A bio-economic model that maximizes the utility of consumption having the dynamics of MLs and the farmer/producers as (...) dynamic constraints is used to examine the effects of increased conversion efficiency, input costs, risk, and levels of base resources and inputs on the competitive and societal solutions for biomass production. We posit ML abandonment after biofuel production ceases could lead to permanent land degradation below initial levels that prohibit the establishment of the original flora and fauna. (shrink)

1 Adaptationism is a research strategy that seeks to identify adaptations and the specific selective forces that drove their evolution in past environments. Since the mid-1970s, paleontologist Stephen J. Gould and geneticist Richard Lewontin have been critical of adaptationism, especially as applied toward understanding human behavior and cognition. Perhaps the most prominent criticism they made was that adaptationist explanations were analogous to Rudyard Kipling's Just So Stories. Since storytelling is an inherent part of science, the criticism refers to the acceptance (...) of stories without sufficient empirical evidence. In particular, Gould, Lewontin, and their colleagues argue that adaptationists often use inappropriate evidentiary standards for identifying adaptations and their functions, and that they often fail to consider alternative hypotheses to adaptation. Playing prominently in both of these criticisms are the concepts of constraint, spandrel, and exaptation. In this article we discuss the standards of evidence that could be used to identify adaptations and when and how they may be appropriately used. Moreover, building an empirical case that certain features of a trait are best explained by exaptation, spandrel, or constraint requires demonstrating that the trait's features cannot be better accounted for by adaptationist hypotheses. Thus, we argue that the testing of alternatives requires the consideration, testing, and systematic rejection of adaptationist hypotheses. Where possible, we illustrate our points with examples taken from human behavior and cognition. Key Words: adaptation; ADHD; brain allometry; constraint; epistemology; evolutionary psychology; exaptation; female orgasm ; optimization; special design; waist-hip ratio. Footnotes1 The authors contributed equally to this paper. Order of authorship was determined alphabetically. Correspondence may be addressed to any of the authors. (shrink)

Despite the importance of extrapair copulation (EPC) in human evolution, almost nothing is known about the design features of EPC detection mechanisms. We tested for sex differences in EPC inference-making mechanisms in a sample of 203 young couples. Men made more accurate inferences (φmen = 0.66, φwomen = 0.46), and the ratio of positive errors to negative errors was higher for men than for women (1.22 vs. 0.18). Since some may have been reluctant to admit EPC behavior, we modeled how (...) underreporting could have influenced these results. These analyses indicated that it would take highly sex-differentiated levels of underreporting by subjects with trusting partners for there to be no real sex difference. Further analyses indicated that men may be less willing to harbor unresolved suspicions about their partners’ EPC behavior, which may explain the sex difference in accuracy. Finally, we estimated that women underreported their own EPC behavior (10%) more than men (0%). (shrink)

Originally published in 1941. Professor Ushenko treats of current problems in technical Logic, involving Symbolic Logic to a marked extent. He deprecates the tendency, in influential quarters, to regard Logic as a branch of Mathematics and advances the intuitionalist theory of Logic. This involves criticism of Carnap, Russell, Wittgenstein, Broad and Whitehead, with additional discussions on Kant and Hegel. The author believes that the union of Philosophy and Logic is a natural one, and that an exclusively mathematical treatment cannot give (...) an adequate account of Logic. A fundamental characteristic of Logic is comprehensiveness, which brings out the affinity between logic and philosophy, for to be comprehensive is the aim of philosophical ambition. (shrink)

Originally published in 1941. Professor Ushenko treats of current problems in technical Logic, involving Symbolic Logic to a marked extent. He deprecates the tendency, in influential quarters, to regard Logic as a branch of Mathematics and advances the intuitionalist theory of Logic. This involves criticism of Carnap, Russell, Wittgenstein, Broad and Whitehead, with additional discussions on Kant and Hegel. The author believes that the union of Philosophy and Logic is a natural one, and that an exclusively mathematical treatment cannot give (...) an adequate account of Logic. A fundamental characteristic of Logic is comprehensiveness, which brings out the affinity between logic and philosophy, for to be comprehensive is the aim of philosophical ambition. (shrink)

Data on birth order and parent-offspring relations for 1,601 adolescents participating in the National Longitudinal Study of Adolescent Health were used to test hypotheses about the role of adolescent suicidal behavior in parent-offspring conflict. Among adolescents highly dissatisfied with their mothers, the odds that middleborns would make at least one suicide attempt was 23% that of first- and lastborns (p<.001), but their odds of receiving medical treatment for their attempts was 8.5 times greater than the odds for first- and lastborns (...) (p=.032). The results are tentatively interpreted as supporting the hypothesis that adolescents use suicide attempts to leverage investment from their parents. (shrink)

In our target article, we discussed the standards of evidence that could be used to identify adaptations, and argued that building an empirical case that certain features of a trait are best explained by exaptation, spandrel, or constraint requires the consideration, testing, and rejection of adaptationist hypotheses. We are grateful to the 31 commentators for their thoughtful insights. They raised important issues, including the meaning of “exaptation”; whether Gould and Lewontin's critique of adaptationism was primarily epistemological or ontological; the necessity, (...) sufficiency, or utility of design evidence, phylogenetic analyses, homology, and molecular genetics in distinguishing exaptations from adaptations; whether adaptationists accept adaptationist hypotheses too quickly; and the real utility of adaptationism to human behavioral science. We organize our response along the major points of the target article, in some situations defending our original claims and in others modifying them. While debate on these issues will undoubtedly continue, we are cautiously optimistic that the main points of the target article (as modified by our response) will help move the debate in a positive direction. (shrink)

Background In February, 2015, the Supreme Court of Canada struck down the ban on medical assistance in dying. In June, 2016, the federal government passed Bill C-14, permitting MAiD. Current medical students will be the first physician cohort to enter a system permissive of MAiD, and may help to ensure equitable access to care. This study assessed medical student views on MAiD, factors influencing these views, and opportunities for medical education. Methods An exploratory cross-sectional survey was developed and distributed to (...) medical students across all years of a three-year Canadian undergraduate medical program. The investigators administered the survey to participants during academic sessions from November to December, 2015. Analysis of the results included summary descriptive statistics, Pearson’s chi-square test of independence to identify differences between participants by year of study, logistic regression to identify factors that influence students’ stances on MAiD, and Wilcoxon signed rank test to measure changes in student support for MAiD and comfort discussing MAiD. Results There were 405 participants for a response rate of 87%. The majority of students supported the Supreme Court’s decision, 61% would provide the means for a patient to end their life, and 38% would personally administer a lethal medication. Students who were more willing to provide the means for MAiD found medical education/clinical experience and patient autonomy to be important contributors to their stances on MAiD. Those students who were less willing to provide the means for MAiD found religious/spiritual beliefs and teachings, as well as concern about potential negative consequences, to be important contributors to their stances on MAiD. Educational training desired by participants included medicolegal, communication skills, technical skills, and religious. Conclusions Medical students generally supported and would provide the means for MAiD to patients. They also indicated a desire for directed medical education on MAiD. (shrink)

This study investigates the pattern of institutional shareholding in the U.K. and its relationship with socially responsible behavior by companies within a sample of over 500 UK companies. We estimate a set of ownership models that distinguish between long- and short-term investors and their largest components and which incorporate both aggregated and disaggregated measures of corporate social performance (CSP). The results suggest that long-term institutional investment is positively related to CSP providing further support for earlier studies by Johnson and Greening (...) (1999, Academy of Management Journal 42, 564–576) and Graves and Waddock (1994, Academy of Management Journal 37, 1034–1046). Disaggregation of CSP into its constituent components suggests that the pattern of institutional investment is also related to the form which CSP takes. Investigation of the impact of investment screens on the selection of stocks suggests that long-term institutional investors select primarily through exclusion, rejecting those firms which have the worst CSP. (shrink)

This book develops a philosophical structure for historical explanation that resolves disputes about the scientific status of history that have persisted since the nineteenth century. It does this by showing why historical explanations must take the form of a narrative and by making their logic explicit. The books formulates a unique positive account of the logic of narrative explanations. This logic reveals how the rational evaluation of narrative explanation becomes possible. The book also develops a nonrealist (irrealist) metaphysics and epistemology (...) of history--that is, it argues that there exists no one fixed past but many pasts. It includes a novel reading of Kuhn's The Structure of Scientific Revolutions, displaying how Kuhn offers a narrative explanation of theory change in science. The book situates narrative explanations within a naturalistic framework. Naturalism regards all canons of rational inquiry as evolving and contingent. The book also argues for the general philosophical significance of historical explanation. The first four chapters defuse methodological and the metaphysical objections to narrative explanations. The final three chapters explore how narrative explanations relate to other sciences. It will be of interest to researchers in historiography, theory of history, philosophy of history, philosophy of science, philosophy of social science, and epistemology"--Provided by publisher. (shrink)

Dual-process models of cognition suggest that there are two types of thought: autonomous Type 1 processes and working memory dependent Type 2 processes that support hypothetical thinking. Models of creative thinking also distinguish between two sets of thinking processes: those involved in the generation of ideas and those involved with their refinement, evaluation, and/or selection. Here we review dual-process models in both these literatures and delineate the similarities and differences. Both generative creative processing and evaluative creative processing involve elements that (...) have been attributed to each of the dual processes of cognition. We explore the notion that creative thinking may rest upon the nature of a shifting process between Type 1 and Type 2 dual processes. We suggest that a synthesis of the evidence bases on dual-process models of cognition and of creative thinking, together with developing time-based approaches to explore the shifting process, could better inform the development of i.. (shrink)

In recent years, there has been increased awareness of unethical consumer practices in Asian countries. Asian consumers have gained a bad reputation for buying counterfeit products, such as computer software, fashion clothing and watches. In 1993, the estimated losses to US software companies due to Chinese counterfeiting stood at US $322 million (Kohut, 1994). The present study uses a consumer ethics scale developed by Muncy and Vitell (1992) to investigate consumers' ethical judgments from a Chinese perspective. The result shows that (...) consumers in different cultures utilize similar rules to assess the ethicality of a given situation. However, findings also show certain cultural elements that are unique in influencing Chinese consumers' ethical judgments. The results also indicate the need for the continued development of and investment in consumer education in Asia. (shrink)

ABSTRACT A key selling point of pharmacogenetics is the genetic stratification of either patients or diseases in order to target the prescribing of medicine. The hope is that genetically ‘tailored’ medicines will replace the current ‘one‐size‐fits‐all’ paradigm of drug development and usage. This paper is concerned with the relationship between difference and justice in the use of pharmacogenetics. This new technology, which facilitates the identification and use of difference, has, we shall argue, the potential to lead to injustice either by (...) the inappropriate use of difference or through the inappropriate failure to use difference. We build on empirical data from a detailed study of the range of options for the development of pharmacogenetics to present a consideration of the ethical issues that surround patient and disease stratification. In it we explore the ways in which the use of pharmacogenetics may lead to the creation of new, genetically stratified, forms of difference and new forms of injustice based on these divisions. We also examine the ways in which existing forms of difference and social stratification may interact with the use of pharmacogenetics. In conclusion, we suggest how an understanding of these ethical issues could usefully inform future policy discussions. (shrink)

A balanced and comprehensive survey of current green political ideas - their varying responses to fundamental problems in political theory and their ...

While many with schizophrenia experience deficits in metacognition it is unclear whether those deficits are related to other features of illness. To explore this issue, the current study classified participants with schizophrenia as possessing a deficit in both awareness of their own emotions and those of others , aware of their own emotions but unaware of the emotions of others and aware of their own emotions and of other’s emotions . Groups were compared on assessments of neurocognitive function, symptoms, and (...) history of sexual trauma. ANCOVA controlling for education found that the group unaware of their own emotions and those of others demonstrated poorer verbal memory, processing speed, executive function, less emotional discomfort and higher levels of disorganization symptoms relative to the other groups. The group aware of their own emotions but not those of others had a significantly higher report of childhood sexual abuse. (shrink)

Axiomatic and problematic approaches to ontology are discussed, at first in relation to the work of Badiou and Deleuze in mathematics. This discussion is then broadened focussing on problematics in Deleuze and Guattari’s critiques of capitalism and psychoanalysis which results in an analysis of the implications of this discussion for education. From this, education as being already there, which is an assumption in some strands of philosophy of education, following Deleuze’s critique of axiomatic presentations of ontological identities, is described as (...) a repressive, stabilizing operation, which produces objectives which are characterized as peculiar things. By contrast, those aspects of practice, knowledge, behaviours and populations which cannot be accommodated and resolved by axiomatic formulae and fall from axiomatic systems are characterized as queer things that constitute counter cultures. (shrink)

Four models are outlined for describing and analysing the role of teachers in the formulation of educational policy and the resulting processes of change. The model of teachers as partners in education policy making draws on a pluralist view of political processes and an assumption of a degree of autonomy for teachers and schools. A model of teachers as implementers of change draws a sharp distinction between the processes of policy making and policy execution and excludes teachers from an involvement (...) in the former. A model of teachers as resisting change has been put forward both by those most opposed to and those most supportive of current educational policy developments. Finally, a model of teachers as policy makers in practice is proposed to describe the way in which the reality of teaching situations can lead to the independent actions of individual teachers having systematic policy effects. The applicability of these models is considered in the context of contemporary educational changes drawing on empirical research evidence, in particular that of the PACE study of the implementation of the National Curriculum at KS1 and KS2. (shrink)

Reviews the book 'William James and the Metaphysics of Experience,' by David C. Lamberth.