207 research outputs found

    Arts Integration as Critical Pedagogy

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    This chapter discusses arts integration in K-12 education as a form of critical pedagogy, a way to create a ā€œcurriculum within the curriculumā€ that meets the demands of standardized testing while encouraging students to make meaningful connections to the material they are taught. Arts integration allows teachers to use a wide range of art forms to teach core subjects, including those emphasized by statewide standardized tests. Focusing on an arts integration project for fourth graders at a Title I elementary school in Richmond, Virginia, the chapter describes how the study of African American history in the former capital of the Confederacy was positioned within the required yearlong Virginia History curriculum. Through field trips and with the guidance of their teachers, an architectural historian, a photographer, and a poet, the children created their personal responses to the story of black Richmond and explored their own and their familiesā€™ relationship to this story

    Enumeration in Alzheimer's disease and other late life psychiatric syndromes

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    Previous studies suggest that visual enumeration is spared in normal aging but impaired in abnormal aging (late stage Alzheimer's disease, AD), raising the task's potential as a marker of dementia. Experiment 1 compared speeded enumeration of 1ā€“9 random dots in early stage AD, vascular dementia (VAD), depression, and age-matched controls. Previous deficits were replicated but they were not specific to AD, with the rate of counting larger numerosities similarly slowed relative to controls by both AD and VAD. Determination of subitizing span was complicated by the surprisingly slower enumeration of one than of two items, especially in AD patients. Experiment 2 showed that AD patientsā€™ relative difficulty with one item persisted with further practice and extended to the enumeration of targets among distractors. However, it was abolished when pattern recognition was possible (enumerating dots on a die). Although an enumeration test is unlikely to help differentiate early AD from other common dementias, the unexpected pattern of patientsā€™ performance challenges current models of enumeration and requires further investigation

    Facial Patterns are a Conventional Signal of Agonistic Ability in Polistes exclamans Paper Wasps

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    Some animals minimize the high costs of aggressive conflict by using conventional signals of agonistic ability to assess rivals prior to interacting. Conventional signals are more controversial than other signals of agonistic ability because they lack an inherent physical or physiological link with their bearerā€™s agonistic ability. Here, we test whether the variable brown facial stripes in Polistes exclamans paper wasps function as a conventional signal. Polistes exclamans were given the option of challenging or avoiding a rival with an experimentally altered facial pattern. Our results show that rival assessment is based on the facial patterns of rivals, as well as an individualā€™s own size, facial patterns, and nesting strategy. Individuals with larger body size and larger brown facial stripes were more likely to challenge rivals than individuals with smaller body size and smaller brown facial stripes. In addition, large individuals were more likely to challenge rivals with large brown facial stripes than small individuals, while an individualā€™s own body size did not influence whether or not they challenged rivals with small brown stripes. Individuals who previously nested in multiple queen groups approached rivals more rapidly than individuals who previously nested alone, suggesting that social experience also plays a role in rival assessment. Finally, rivals with small facial stripes were challenged more rapidly than those with large facial stripes. These results demonstrate that P.Ā exclamans facial patterns function as a signal used to minimize the cost of conflict. However, individuals do not make simple decisions based on their rivalā€™s signal alone, as an individualā€™s own social experience and agonistic abilities also influence rival assessment decisions.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87088/1/j.1439-0310.2011.01967.x.pd

    EVOLUTION OF IDENTITY SIGNALS: FREQUENCY-DEPENDENT BENEFITS OF DISTINCTIVE PHENOTYPES USED FOR INDIVIDUAL RECOGNITION

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/74986/1/j.1558-5646.2009.00833.x.pd

    Specialized visual learning of facial signals of quality in the paper wasp, P olistes dominula

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109618/1/bij12394.pd

    How Does Individual Recognition Evolve? Comparing Responses to Identity Information in P olistes Species with and Without Individual Recognition

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    A wide range of complex social behaviors are facilitated by the recognition of individual conspecifics. Individual recognition requires sufficient phenotypic variation to provide identity information as well as receivers that process and respond to identity information. Understanding how a complex trait such as individual recognition evolves requires that we consider how each component has evolved. Previous comparative studies have examined phenotypic variability in senders and receiver learning abilities, although little work has compared receiver responses to identity information among related species with and without individual recognition. Here, we compare responses to identity information in two Polistes paper wasps: P.Ā fuscatus, which visually recognizes individuals, and P.Ā metricus , which does not normally show evidence of individual recognition. Although the species differ in individual recognition, the results of this study show that receiver responses to experimentally manipulated identity information are surprisingly similar in both species. Receivers direct less aggression toward identifiable individuals than unidentifiable individuals. Therefore, the responses necessary for individual recognition may preā€date its evolution in the P.Ā fuscatus lineage. Additionally, our data demonstrate the apparent binary differences in a complex behavior between the two species, such as individual recognition, likely involve incremental differences along a number of axes.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/102093/1/eth12191.pd

    Heritable variation in colour patterns mediating individual recognition

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    Understanding the developmental and evolutionary processes that generate and maintain variation in natural populations remains a major challenge for modern biology. Populations of Polistes fuscatus paper wasps have highly variable colour patterns that mediate individual recognition. Previous experimental and comparative studies have provided evidence that colour pattern diversity is the result of selection for individuals to advertise their identity. Distinctive identity-signalling phenotypes facilitate recognition, which reduces aggression between familiar individuals in P. fuscatus wasps. Selection for identity signals may increase phenotypic diversity via two distinct modes of selection that have different effects on genetic diversity. Directional selection for increased plasticity would greatly increase phenotypic diversity but decrease genetic diversity at associated loci. Alternatively, heritable identity signals under balancing selection would maintain genetic diversity at associated loci. Here, we assess whether there is heritable variation underlying colour pattern diversity used for facial recognition in a wild population of P. fuscatus wasps. We find that colour patterns are heritable and not Mendelian, suggesting that multiple loci are involved. Additionally, patterns of genetic correlations among traits indicated that many of the loci underlying colour pattern variation are unlinked and independently segregating. Our results support a model where the benefits of being recognizable maintain genetic variation at multiple unlinked loci that code for phenotypic diversity used for recognition

    Heritable variation in colour patterns mediating individual recognition

    Get PDF
    Understanding the developmental and evolutionary processes that generate and maintain variation in natural populations remains a major challenge for modern biology. Populations of Polistes fuscatus paper wasps have highly variable colour patterns that mediate individual recognition. Previous experimental and comparative studies have provided evidence that colour pattern diversity is the result of selection for individuals to advertise their identity. Distinctive identity-signalling phenotypes facilitate recognition, which reduces aggression between familiar individuals in P. fuscatus wasps. Selection for identity signals may increase phenotypic diversity via two distinct modes of selection that have different effects on genetic diversity. Directional selection for increased plasticity would greatly increase phenotypic diversity but decrease genetic diversity at associated loci. Alternatively, heritable identity signals under balancing selection would maintain genetic diversity at associated loci. Here, we assess whether there is heritable variation underlying colour pattern diversity used for facial recognition in a wild population of P. fuscatus wasps. We find that colour patterns are heritable and not Mendelian, suggesting that multiple loci are involved. Additionally, patterns of genetic correlations among traits indicated that many of the loci underlying colour pattern variation are unlinked and independently segregating. Our results support a model where the benefits of being recognizable maintain genetic variation at multiple unlinked loci that code for phenotypic diversity used for recognition.journal articl

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    In Persian; foreword in Japanese and EnglishAdded t.p. in Japanese and EnglishŲ¬Ł„ŲÆ 2 published in 2006 before Ų¬Ł„ŲÆ 1Two col. maps on folded leaves of plates inserted in Ų¬Ł„ŲÆ 1"Supported by Grant-in-Aid for Scientific Research (Grant-in-Aid for JSPS Fellows, 17-2387, 2005-2008 and Grant-in-Aid for Young Scientists (B), 21720255, 2009)"--Foreword, Ų¬Ł„ŲÆ 1, p. xviiIncludes bibliographical references and inde
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