3 resultados para Young, Richard: Talking and testing

em Bucknell University Digital Commons - Pensilvania - USA


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This article retraces the “genealogy” of the fideist perspective in philosophy as well as literature, especially within the writings of Søren Kierkegaard and the novel Don Quixote. It contends that a demythologized perspective of the fideist-humanist sort, based upon Erasmian tolerance and intellectual creativity and updated with the insights of post-analytic theory (e.g., the work of Alasdair MacIntyre, Richard Rorty, and Jeffrey Stout), without revoking the vocabulary of transcendence, can reinforce the weathered but still valuable post-Enlightenment moral vocabulary, and can reiterate the humaneness of liberal hope without undue encumbrance from the dogmatic baggage of traditional theological jargon and metaphysics.

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The objective of this project was to determine the relationship between hibernacula microclimate and White-nose Syndrome (WNS), an emerging infectious disease in bats. Microclimate was examined on a species scale and at the level of the individual bat to determine if there was a difference in microclimate preference between healthy and WNS-affected little brown myotis (Myotis lucifugus) and to determine the role of microclimate in disease progression. There is anecdotal evidence that colder, drier hibernacula are less affected by WNS. This was tested by placing rugged temperature and humidity dataloggers in field sites throughout the eastern USA, experimentally determining the response to microclimate differences in captive bats, and testing microclimate roosting preference. This study found that microclimate significantly differed from the entrance of a hibernaculum versus where bats traditionally roost. It also found hibernaculum temperature and sex had significant impacts on survival in WNS-affected bats. Male bats with WNS had increased survivability over WNS-affected female bats and WNS bats housed below the ideal growth range of the fungus that causes WNS, Geomyces destructans, had increased survival over those housed at warmer temperatures. The results from this study are immediately applicable to (1) predict which hibernacula are more likely to be infected next winter, (2) further our understanding of WNS, and (3) determine if direct mitigation strategies, such as altering the microclimate of mines, will be effective ways to combat the spread of the fungus.

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Most primates live in highly complex social systems, and therefore have evolved similarly complex methods of communicating with each other. One type of communication is the use of manual gestures, which are only found in primates. No substantial evidence exists indicating that monkeys use communicative gestures in the wild. However, monkeys may demonstrate the ability to learn and/or use gestures in certain experimental paradigms since they¿ve been shown to use other visual cues such as gaze. The purpose of this study was to investigate if ten brown capuchin monkeys (Cebus apella) were able to use gestural cues from monkeys and a pointing cue from a human to obtain a hidden reward. They were then tested to determine if they could transfer this skill from monkeys to humans and from humans to monkeys. One group of monkeys was trained and tested using a conspecific as the cue giver, and was then tested with a human cue-giver. The second group of monkeys began training and testing with a human cue giver, and was then tested with a monkey cue giver. I found that two monkeys were able to use gestural cues from conspecifics (e.g., reaching) to obtain a hidden reward and then transfer this ability to a pointing cue from a human. Four monkeys learned to use the human pointing cue first, and then transferred this ability to use the gestural cues from conspecifics to obtain a hidden reward. However, the number of trials it took for each monkey to transfer the ability varied considerably. Some subjects spontaneously transferred in the minimum number of trials needed to reach my criteria for successfully obtaining hidden rewards (N = 40 trials), while others needed a large number of trials to do so (e.g. N = 190 trials). Two subjects did not perform successfully in any of the conditions in which they were tested. One subject successfully used the human pointing cue and a human pointing plus vocalization cue, but did not learn the conspecific cue. One subject learned to use the conspecific cue but not the human pointing cue. This was the first study to test if brown capuchin monkeys could use gestural cues from conspecifics to solve an object choice task. The study was also the first to test if capuchins could transfer this skill from monkeys to humans and from humans to monkeys. Results showed that capuchin monkeys were able to flexibly use communicative gestures when they were both unintentionally given by a conspecific and intentionally given by a human to indicate a source of food.