Five experiments investigated how people use categories to make inductions about objects whose categorisation is uncertain. Normatively, they should consider all the categories the object might be in and use a weighted combination of information from all the categories: bet-hedging. The experiments presented people with simple, artificial categories and asked them to make an induction about a new object that was most likely in one category but possibly in another. The results showed that the majority of people focused on the (...) most likely category in making inductions, although there was a group of consistently normative responders who used information from both categories (about 25% of our college population). Across experiments the overall pattern of results suggests that performance in the task is improved not by understanding the underlying principles of bet-hedging but by increasing the likelihood that multiple categories are in working memory at the time of the induction. We discuss implications for improving everyday inductions. (shrink)
This article examines Chen Ziying, an American-trained Chinese biologist and his prewar efforts to bring his Woods Hole experience from the United States to China between 1930 and 1936. I argue that the Marine Biological Laboratory appears as a prominent American scientific institution in the twentieth century among visiting Chinese students and scholars who were drawn to the American approach of building world-class seaside laboratories to facilitate marine biological study while cultivating a collaborative culture via songs of biology. (...) class='Hi'>Chen was one of the leading US-trained Chinese scientists who aspired to the international trend of developing coastal biology in the early twentieth century and was determined to modernize China’s discipline-building of biology with the construction of marine research facilities similar to the MBL. I show that Chen’s efforts of bringing the MBL practice to China took place at a time when science in China was overshadowed by the impulse of nationalism. Despite the nationalistic rhetoric, Chen was able to establish a Chinese connection with Woods Hole by introducing the MBL cultural practices of songs with biological significance. Lyrics from popular biological songs such as “It’s a Long Way from Amphioxus” and “Songs of Amoy” reflect not just Darwinian themes but also a transnational connection between American and Chinese biologists in Republican-era China––a period in modern Chinese history that is often characterized by soaring sentiments of nationalism. This paper sets out to reconsider the interplay of scientific nationalism and scientific internationalism in shaping marine science in modern China, as well as to reflect on the meanings of value-laden terms such as “nationalism” and “foreignness” and their conceptual impacts on writing the historiography of biology in twentieth-century China. (shrink)
Arbuscular mycorrhizal fungi are considered as a potential biotechnological tool for improving phytostabilization efficiency and plant tolerance to heavy metal-contaminated soils. However, the mechanisms through which AMF help to alleviate metal toxicity in plants are still poorly understood. A greenhouse experiment was conducted to evaluate the effects of two AMF species on the growth, Pb accumulation, photosynthesis and antioxidant enzyme activities of a leguminous tree at Pb addition levels of 0, 500, 1000 and 2000 mg kg-1 soil. AMF symbiosis decreased (...) Pb concentrations in the leaves and promoted the accumulation of biomass as well as photosynthetic pigment contents. Mycorrhizal plants had higher gas exchange capacity, non-photochemistry efficiency, and photochemistry efficiency compared with non-mycorrhizal plants. The enzymatic activities of superoxide dismutase, ascorbate peroxidases and glutathione peroxidase were enhanced, and hydrogen peroxide and malondialdehyde contents were reduced in mycorrhizal plants. These findings suggested that AMF symbiosis could protect plants by alleviating cellular oxidative damage in response to Pb stress. Furthermore, mycorrhizal dependency on plants increased with increasing Pb stress levels, indicating that AMF inoculation likely played a more important role in plant Pb tolerance in heavily contaminated soils. Overall, both F. mosseae and R. intraradices were able to maintain efficient symbiosis with R. pseudoacacia in Pb polluted soils. AMF symbiosis can improve photosynthesis and reactive oxygen species scavenging capabilities and decrease Pb concentrations in leaves to alleviate Pb toxicity in R. pseudoacacia. Our results suggest that the application of the two AMF species associated with R. pseudoacacia could be a promising strategy for enhancing the phytostabilization efficiency of Pb contaminated soils. (shrink)
The radical nub of Byrne & Russon's argument is that passive priming effects can produce much of the evidence of higher-order cognition in nonhuman primates. In support of their position we review evidence of similar behavioral priming effects n humans. However, that evidence further suggests that even program-level imitative behavior can be produced through priming.
SummaryThe increasing prevalence of obesity in children and adolescents has become one of the most important public health issues around the world. Lack of physical activity is a risk factor for obesity, while being obese could reduce the likelihood of participating in physical activity. Failing to account for the endogeneity between obesity and physical activity would result in biased estimation. This study investigates the relationship between overweight and physical activity by taking endogeneity into consideration. It develops an endogenous bivariate probit (...) model estimated by the maximum likelihood method. The data included 4008 boys and 4197 girls in the 5th–9th grades in Taiwan in 2007–2008. The relationship between overweight and physical activity is significantly negative in the endogenous model, but insignificant in the comparative exogenous model. This endogenous relationship presents a vicious circle in which lower levels of physical activity lead to overweight, while those who are already overweight engage in less physical activity. The results not only reveal the importance of endogenous treatment, but also demonstrate the robust negative relationship between these two factors. An emphasis should be put on overweight and obese children and adolescents in order to break the vicious circle. Promotion of physical activity by appropriate counselling programmes and peer support could be effective in reducing the prevalence of obesity in children and adolescents. (shrink)
OBJECTIVE: To report and analyse the pattern of end-of-life decision making for terminal Chinese cancer patients. DESIGN: Retrospective descriptive study. SETTING: A cancer clinical trials unit in a large teaching hospital. PATIENTS: From April 1992 to August 1997, 177 consecutive deaths of cancer clinical trial patients were studied. MAIN MEASUREMENT: Basic demographic data, patient status at the time of signing a DNR consent, or at the moment of returning home to die are documented, and circumstances surrounding these events evaluated. RESULTS: (...) DNR orders were written for 64.4% of patients. Patients in pain (odds ratio 0.45, 95% CI 0.22-0.89), especially if requiring opioid analgesia (odds ratio 0.40, 95% CI 0.21-0.77), were factors associated with a higher probability of such an order. Thirty-five patients were taken home to die, a more likely occurrence if the patient was over 75 years (odds ratio 0.12, 95% CI 0.04-0.34), had children (odds ratio 0.14, 95% CI 0.02-0.79), had Taiwanese as a first language (odds ratio 6.74, 95% CI 3.04-14.93), or was unable to intake orally (odds ratio 2.73, 95% CI 1.26-5.92). CPR was performed in 30 patients, none survived to discharge. CONCLUSIONS: DNR orders are instituted in a large proportion of dying Chinese cancer patients in a cancer centre, however, the order is seldom signed by the patient personally. This study also illustrates that as many as 20% of dying patients are taken home to die, in accordance with local custom. (shrink)
The purpose of this study was to develop a Physician's Spiritual Well-Being Scale (PSpWBS). The significance of a physician's spiritual well-being was explored through in-depth interviews with and qualitative data collection from focus groups. Based on the results of qualitative analysis and related literature, the PSpWBS consisting of 25 questions was established. Reliability and validity tests were performed on 177 subjects. Four domains of the PSpWBS were devised: physician's characteristics; medical practice challenges; response to changes; and overall well-being. The explainable (...) total variance was 65.65%. Cronbach α was 0.864 when the internal consistency of the whole scale was calculated. Factor analysis showed that the internal consistency Cronbach α value for each factor was between 0.625 and 0.794 and the split-half reliability was 0.865. The scale has satisfactory reliability and validity and could serve as the basis for assessment of the spiritual well-being of a physician. (shrink)
ABSTRACTDespite interest in exercise as a treatment for anxiety disorders the mechanism behind the anxiolytic effects of exercise is unclear. Two observations motivate the present work. First, engagement of attention control during increased working memory load can decrease anxiety. Second, exercise can improve attention control. Therefore, exercise could boost the anxiolytic effects of increased WM load via its strengthening of attention control. Anxiety was induced by threat of shock and was quantified with anxiety-potentiated startle. Thirty-five healthy volunteers participated in two (...) types of activity, exercise and control-activity. After each activity, participants completed a WM task at low- and high-load during safe and threat. Results were not consistent with the hypothesis: exercise vs. control-activity increased APS in high-load. However, this incre... (shrink)
English As scientists engaged in understanding the potential of drug/nutrient responses as a function of our genome and all of its ramifications including academic and commercial aspects, our future looks bright. While, however, being cautious about our future especially in terms of regulatory issues, gene-nutrition interactions especially related to genome-based response will indeed be the next cornerstone of solid scientific approaches to assist individuals in choosing dietary supplements, functional foods, and even nutritional beverages on an individualized basis. Nutrigenomics is the (...) key to what we have termed “nutritional gene therapy” and from its origin will spring gene mapping as the wave of the future in nutrition. The information provided in this article will serve as evidence of our conviction of this scientific wonderland of opportunity. French Dès lors que les scientifiques ont commencé à s'intéresser aux réactions potentielles aux médicaments/aliments en fonction de notre génome ainsi qu'à tous leurs aspects, y compris académiques et commerciaux, notre futur s'éclaire. Tout en restant prudent à l'avenir, en particulier en termes de problèmes de régulation, il est clair que les interactions gènes-nutrition, en particulier celles liées aux réactions en fonction du génome, seront la pierre angulaire d'approches scientifiques solides, qui guideront les individus dans le choix de suppléments nutritionnels, d'une alimentation fonctionnelle, et même de boissons nutritionnelles, de façon individualisée. La "Nutrigénomique'' est la clé de ce que nous appelons la "thérapie génique nutritionnelle'' et placera d'emblée la carte génique au coeur de l'avenir de la nutrition. Cet article présente des données propres à étayer notre conviction de ce "pays des merveilles'' scientifique qui se trouve à notre portée. (shrink)
Der folgende Beitrag ist ein erster Versuch, Sartres und Ricœurs Werttheorien in ihren Grundzügen zu rekonstruieren, sie zu ver- gleichen und daraus bestimmte Schlussfol- gerungen bezüglich der Ricœurschen Sartre-Rezeption zu ziehen. Somit wird die Aufgabe gestellt, eine Forschungslücke zu füllen, denn Sartres Wertekonzeption ist relativ wenig untersucht worden, während die von Paul Ricœur sogar einen blinder Fleck innerhalb der Ricœurforschung darstellt; die Ricœursche Sartre-Rezeption ist kaum zur Sprache gebracht worden, jedoch nicht in einem explizit axiologis- chen Kontext. Im Unterschied (...) zu Françoi- se Dastur wird aufzeigt, dass Ricœur in Le volontaire et l‘involontaire nicht einfach Partei für Marcel ergreift und gegen Sartre argumentiert, sondern dass er zwischen den Positionen der beiden Denker auch zu vermitteln versucht. Abschließend soll aufgezeigt werden, dass Ricœurs axiologis- che Konzeption, die aus dieser Vermittlung entstand, in seinem Spätwerk zum Teil bei- behalten wurde und zwar gerade in jenem Teil, der ihn in der Nähe von Sartre bringt und zunehmend von Marcel entfernt. (shrink)
These essays engage Jin Y. Park’s recent translation of the work of Kim Iryŏp, a Buddhist nun and public intellectual in early twentieth-century Korea. Park’s translation of Iryŏp’s Reflections of a Zen Buddhist Nun was the subject of two book panels at recent conferences: the first a plenary session at the annual meeting of the Society for Asian and Comparative Philosophy and the second at the Eastern Division of the American Philosophical Association on a group program session sponsored by the (...) International Society for Buddhist Philosophy. This exchange also includes a response from Park. (shrink)
