Global ETD Search

1	Are All Sources Equal? Examining the Roles of Aging and the Frontal Lobes on Multiple Types of Source Memory Using a Repeated-Measures Design Cook, Shaun P January 2006 (has links) This paper reports a series of experiments designed to compare memory for multiple kinds of source information in young and older adults. The older adults in these studies were classified as having well or poorly functioning frontal lobes. In EXPERIMENTS 1-3, three different sources that provided independent cues to item information were examined using a repeated-measures design. In particular, participants' memory for voice source information, spatial source information, and temporal source information was tested in separate blocks. The results indicated that the performance of both young and older adults depended upon the type of source tested: Voice source memory was superior to spatial source and temporal source memory, which did not differ. There was also an age effect that was mediated by frontal functioning. Only the low frontal older adults showed impairments in source memory. High frontal older adults were equivalent to young. In EXPERIMENT 4, sources that provided redundant cues to item information were investigated. Voice sources and spatial sources were perfectly matched during encoding such that Voice A always came from Location 1 and Voice B always came from Location 2. When sources provided redundant information in this manner, young and high frontal older adults improved their spatial source memory by making use of redundant voice information, whereas the low frontal older adults not only performed more poorly than both young and high frontal older adults, but were unable to benefit from the redundancy. No differences in item memory were found. The findings were interpreted in terms of the executive and working memory functions involved in the integration of various contextual elements of an experience with its content. Source Memory Aging Frontal Lobes Repeated-Measures Design Multiple Redundant Sources
2	Confidence Intervals for a Ratio of Binomial Proportions Based on Paired Data Bonett, Douglas, Price, Robert M. 15 September 2006 (has links) Four interval estimation methods for the ratio of marginal binomial proportions are compared in terms of expected interval width and exact coverage probability. Two new methods are proposed that are based on combining two Wilson score intervals. The new methods are easy to compute and perform as well or better than the method recently proposed by Nam and Blackwelder. Two sample size formulas are proposed to approximate the sample size required to achieve an interval estimate with desired confidence level and width. continuity correction cross-over design interval estimation matched-pairs design repeated measures design sample size score interval wald interval wilson interval Mathematics and Statistics
3	Zentrale und periphere Populationen von Hornungia petraea: Biodiversität und Demographie auf unterschiedlichen raum-zeitlichen Skalenebenen / Central and peripheral populations of Hornungia petraea: biodiversity and demography on different spatio-temporal scales Kluth, Christian 27 April 2004 (has links) No description available. Mathematics and Computer Science 580 Pflanzen (Botanik) “abundant centre” Ähnlichkeit Alysso-Sedion ANCOVA Artenakkumulation Artenreichtum Biogeographie Demographie Dichteabhängigkeit hierarchische Beprobung Hornungia petraea Messwiederholung Michaelis-Menten Populationsdynamik Populationsökologie raum-zeitliche Variation Skalen Trockenrasen Zentrale und periphere Populationen “abundant centre” distribution Alysso-Sedion ANCOVA annual and seasonal seed bank dynamics biogeography calcareous grasslands central-marginal model demography density dependence Hornungia petraea Michaelis-Menten nested repeated measures design nested sampling design population dynamics population ecology scale similarity decay spatio-temporal variation species accumulation species richness 42.07 42.44 WL WN

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