983 resultados para reading psychology
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Includes index.
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Mode of access: Internet.
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In this thesis, three main questions were addressed using event-related potentials (ERPs): (1) the timing of lexical semantic access, (2) the influence of "top-down" processes on visual word processing, and (3) the influence of "bottom-up" factors on visual word processing. The timing of lexical semantic access was investigated in two studies using different designs. In Study 1,14 participants completed two tasks: a standard lexical decision (LD) task which required a word/nonword decision to each target stimulus, and a semantically primed version (LS) of it using the same category of words (e.g., animal) within each block following which participants made a category judgment. In Study 2, another 12 participants performed a standard semantic priming task, where target stimulus words (e.g., nurse) could be either semantically related or unrelated to their primes (e.g., doctor, tree) but the order of presentation was randomized. We found evidence in both ERP studies that lexical semantic access might occur early within the first 200 ms (at about 170 ms for Study 1 and at about 160 ms for Study 2). Our results were consistent with more recent ERP and eye-tracking studies and are in contrast with the traditional research focus on the N400 component. "Top-down" processes, such as a person's expectation and strategic decisions, were possible in Study 1 because of the blocked design, but they were not for Study 2 with a randomized design. Comparing results from two studies, we found that visual word processing could be affected by a person's expectation and the effect occurred early at a sensory/perceptual stage: a semantic task effect in the PI component at about 100 ms in the ERP was found in Study 1 , but not in Study 2. Furthermore, we found that such "top-down" influence on visual word processing might be mediated through separate mechanisms depending on whether the stimulus was a word or a nonword. "Bottom-up" factors involve inherent characteristics of particular words, such as bigram frequency (the total frequency of two-letter combinations of a word), word frequency (the frequency of the written form of a word), and neighborhood density (the number of words that can be generated by changing one letter of an original word or nonword). A bigram frequency effect was found when comparing the results from Studies 1 and 2, but it was examined more closely in Study 3. Fourteen participants performed a similar standard lexical decision task but the words and nonwords were selected systematically to provide a greater range in the aforementioned factors. As a result, a total of 18 word conditions were created with 18 nonword conditions matched on neighborhood density and neighborhood frequency. Using multiple regression analyses, we foimd that the PI amplitude was significantly related to bigram frequency for both words and nonwords, consistent with results from Studies 1 and 2. In addition, word frequency and neighborhood frequency were also able to influence the PI amplitude separately for words and for nonwords and there appeared to be a spatial dissociation between the two effects: for words, the word frequency effect in PI was found at the left electrode site; for nonwords, the neighborhood frequency effect in PI was fovind at the right elecfrode site. The implications of otir findings are discussed.
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"Selected bibliography": p. 177-179.
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Mode of access: Internet.
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Columbia contributions to philosophy and psychology, vol. XVII, no. l.
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Bibliography: p. 178-181.
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This article traces the lineage of critical literacy from Freire through critical pedagogies and discourse analysis. The author discusses the need for a contingent definition of critical literacy, as a situated and contextual response to political economies, institutional and cultural relations of power.
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L’épilepsie bénigne à pointes centrotemporales (EPCT) est la forme la plus fréquente des épilepsies idiopathiques chez l’enfant (Fastenau et al., 2009). Le pronostic de ces patients est bon, notamment en raison de la rémission spontanée de cette épilepsie à l’adolescence; toutefois plusieurs études suggèrent la présence de troubles cognitifs et de spécificités neuroanatomiques. Il n’existe pas actuellement de consensus sur les liens entre leurs troubles cognitifs et leurs particularités neuroanatomiques et neurofonctionnelles. Dans cette thèse, notre but est de préciser le profil des enfants ayant une épilepsie bénigne à pointes centro-temporales, en investiguant les caractéristiques des patients à plusieurs niveaux: cognitif, fonctionnel, structurel. La thèse est composée de quatre articles, dont deux articles empiriques. Notre premier article a pour objectif de recenser les difficultés cognitives et affectives rapportées par les études s’intéressant aux caractéristiques des enfants ayant une épilepsie bénigne. Bien qu’une certaine variabilité soit retrouvée dans la littérature, cette revue démontre qu’une histoire d’épilepsie, même bénigne, peut être un facteur de risque pour le développement cognitif et socio-affectif des enfants. Notre revue de littérature a indiqué des troubles particuliers du langage chez ces enfants, mais aucune étude n’avait auparavant investigué spécifiquement la compréhension de lecture chez les enfants ayant une EPCT, une compétence essentielle dans le cheminement scolaire des enfants. Ainsi, nous avons développé une tâche novatrice de compréhension de lecture de phrases en imagerie par résonnance magnétique fonctionnelle (IRMf), adaptée à la population pédiatrique. Dans notre second article, nous avons validé cette tâche auprès d’enfants sains et nous avons mis en évidence une mobilisation des régions cérébrales généralement engagées dans des tâches langagières chez l’enfant sain, y compris les régions impliquées dans le traitement sémantique (Berl et al., 2010; Blumenfeld, Booth et Burman, 2006). Le troisième article de cette thèse rapporte notre investigation du réseau cérébral activé durant cette nouvelle tâche de compréhension de lecture de phrases en IRMf chez les enfants ayant une EPCT. Nos résultats suggèrent que ces derniers ont recours à l’activation d’un réseau cérébral plus large, présentant des similarités avec celui retrouvé chez les enfants dyslexiques. Par ailleurs, l’activation du striatum gauche, structure généralement associée à la réalisation de processus cognitifs complexes est uniquement retrouvée chez les enfants épileptiques. Étant donné que les enfants ayant une EPCT obtiennent des performances à la tâche d’IRMf équivalentes à celles des enfants sains, il est possible d’émettre l’hypothèse que ces différences d’activations cérébrales soient adaptatives. L’étude des relations entre les résultats neuropsychologiques, la performance à la tâche et les activations cérébrales a mis en évidence des prédicteurs différents entre les deux groupes d’enfants, suggérant qu’ils ne s’appuient pas exactement sur les mêmes processus cognitifs pour réussir la tâche. De plus, nous avons réalisé un travail d’intégration des diverses méthodologies utilisées dans les études en imagerie pondérée en diffusion chez l’enfant épileptique, ce qui constitue le quatrième article de cette thèse. Nous rapportons les diverses applications de cette méthode dans la caractérisation des anomalies structurelles subtiles de la matière blanche chez les enfants épileptiques en général. Les différentes méthodologies employées, les enjeux, et les biais potentiels relatifs aux traitements des données de diffusion y sont discutés. Enfin, pour mieux comprendre l’origine et les marqueurs de cette épilepsie, nous avons étudié les spécificités structurelles des cerveaux des enfants ayant une EPCT à l’aide d’analyses sur les données d’imagerie par résonnance magnétique. Aucune différence n’a été mise en évidence au niveau de la matière grise entre les cerveaux d’enfants sains et ceux ayant une EPCT. À l’inverse, nous rapportons des différences subtiles au niveau de la matière blanche dans notre population d’enfants épileptiques, avec une diminution de l’anisotropie fractionnelle (FA) au niveau temporal inférieur/moyen de l’hémisphère gauche, ainsi que dans l’hémisphère droit dans les régions frontales moyennes et occipitales inférieures. Ces résultats suggèrent la présence d’altérations de la matière blanche subtiles et diffuses dans le cerveau des enfants ayant une EPCT et concordent avec ceux d’autres études récentes (Ciumas et al., 2014).
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This paper examines the ideological and political basis of the practice of psychotherapy in contemporary culture. Psychotherapy is argued to be both inherently political and intimately concerned with the construction of subjectivity. These arguments are examined through interrogating the representation of psychotherapy in the works of Lindner ( The Fifty-Minute Hour , Bantam, New York, 1955) and particularly in Yalom's fictional text Lying on the Couch (HarperPerennial, New York, 1996). The implications within psychotherapy for representing normality, negotiating power, and locating and constructing subjectivity are highlighted through the critical treatment of these texts.
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It has been shown that abilities in spatial learning and memory are adversely affected by aging. The present study was conducted to investigate whether increasing age has equal consequences for all types of spatial learning or impacts certain types of spatial learning selectively. Specifically, two major types of spatial learning, exploratory navigation and map reading, were contrasted. By combining a neuroimaging finding that the medial temporal lobe (MTL) is especially important for exploratory navigation and a neurological finding that the MTL is susceptible to age-related atrophy, it was hypothesized that spatial learning through exploratory navigation would exhibit a greater decline in later life than spatial learning through map reading. In an experiment, young and senior participants learned locations of landmarks in virtual environments either by navigating in them in the first-person perspective or by seeing aerial views of the environments. Results showed that senior participants acquired less accurate memories of the layouts of landmarks than young participants when they navigated in the environments, but the two groups did not differ in spatial learning performance when they viewed the environments from the aerial perspective. These results suggest that spatial learning through exploratory navigation is particularly vulnerable to adverse effects of aging, whereas elderly adults may be able to maintain their map reading skills relatively well.
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Research on reading has been successful in revealing how attention guides eye movements when people read single sentences or text paragraphs in simplified and strictly controlled experimental conditions. However, less is known about reading processes in more naturalistic and applied settings, such as reading Web pages. This thesis investigates online reading processes by recording participants eye movements. The thesis consists of four experimental studies that examine how location of stimuli presented outside the currently fixated region (Study I and III), text format (Study II), animation and abrupt onset of online advertisements (Study III), and phase of an online information search task (Study IV) affect written language processing. Furthermore, the studies investigate how the goal of the reading task affects attention allocation during reading by comparing reading for comprehension with free browsing, and by varying the difficulty of an information search task. The results show that text format affects the reading process, that is, vertical text (word/line) is read at a slower rate than a standard horizontal text, and the mean fixation durations are longer for vertical text than for horizontal text. Furthermore, animated online ads and abrupt ad onsets capture online readers attention and direct their gaze toward the ads, and distract the reading process. Compared to a reading-for-comprehension task, online ads are attended to more in a free browsing task. Moreover, in both tasks abrupt ad onsets result in rather immediate fixations toward the ads. This effect is enhanced when the ad is presented in the proximity of the text being read. In addition, the reading processes vary when Web users proceed in online information search tasks, for example when they are searching for a specific keyword, looking for an answer to a question, or trying to find a subjectively most interesting topic. A scanning type of behavior is typical at the beginning of the tasks, after which participants tend to switch to a more careful reading state before finishing the tasks in the states referred to as decision states. Furthermore, the results also provided evidence that left-to-right readers extract more parafoveal information to the right of the fixated word than to the left, suggesting that learning biases attentional orienting towards the reading direction.
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Popular culture is a powerful, shaping force in the lives of teenagers between the ages of fourteen through eighteen in the United States today. This dissertation argues the importance of popular fiction for adolescent spiritual formation and it investigates that importance by exploring the significance of narrative for theology and moral formation. The dissertation employs mythic and archetypal criticism as a tool for informing the selection and critique of narratives for use in adolescent spiritual development and it also incorporates insights gained from developmental psychology to lay the groundwork for the development of a curriculum that uses young adult fiction in a program of spiritual formation for teenagers in a local church setting. The dissertation defends the power of narrative in Christian theology and concludes that narrative shapes the imagination in ways that alter perception and are important for the faith life of teenagers in particular. I go on to argue that not all narratives are created equal. In using literary myth criticism in concert with theology, I use the two disciplines’ different aims and methods to fully flesh out the potential of theologies intrinsic to works meant for a largely secular audience. The dissertation compares various works of young adult fiction (M.T. Anderson’s Feed and Terry Pratchett’s Nation in dialogue with a theology of creation; Marcus Zusak’s I am the Messenger and Jerry Spinelli’s Stargirl in dialogue with salvation and saviors; and the four novels of Stephanie Meyer’s Twilight saga in dialogue with a theology of hope (eschatology). The dissertation explores how each theme surfaces (even if only implicitly) from both literary and theological standpoints. The dissertation concludes with a sample four-week lesson plan that demonstrates one way the theological and literary critique can be formed into a practical curriculum for use in an adolescent spiritual development setting. Ultimately, this dissertation provides a framework for how practitioners of young adult formation can select, analyze, and develop materials for their teenagers using new works of popular young adult fiction. The dissertation comes to the conclusion that popular fiction contains a wealth of material that can challenge and shape young readers’ own emerging theology.
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Four experiments examined participants' ability to produce surface characteristics of sentences using an on-line story reading task. Participants read a series of stories in which either all, or the majority of sentences were written in the same "style," or surface form. Twice per story, participants were asked to fill in a blank consistent with the story. For sentences that contained three stylistic regularities, participants imitated either all three characteristics (Experiment 2) or two of the three characteristics (Experiment 1), depending on the proportion of in-style sentences. Participants demonstrated a recognition bias for the read style in an unannounced recognition task. When participants read stories in which the two styles were the dative/double object alternation, participants demonstrated a syntactic priming effect in the cloze task, but no consistent recognition bias in a later recognition test (Experiments 3 and 4).