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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Addenbrooke\'s Cognitive Examination - Revised (ACE-R): adaptação transcultural, dados normativos de idosos cognitivamente saudáveis e de aplicabilidade como instrumento de avaliação cognitiva breve para pacientes com doença de Al / Addenbrookes Cognitive ExaminationRevised (ACE-R): cross-cultural adaptation, normative data for cognitively preserved elderly and its applicability as a brief cognitive evaluation tool for mild probable Alzheimers disease patients

Carvalho, Viviane Amaral 17 September 2009 (has links)
INTRODUÇÃO: A Addenbrookes Cognitive Examination Revised (ACE-R) avalia cinco domínios cognitivos em conjunto e também oferece notas parciais para cada um deles, a saber: Atenção e Orientação, Memória, Fluência, Linguagem e Habilidades VisuaisEspaciais. Essa bateria tem se mostrado útil na diferenciação entre a doença de Alzheimer (DA) e a demência frontotemporal (DFT) em outros países. O instrumento foi submetido à adaptação para o português e sua versão brasileira foi previamente publicada pelos autores. OBJETIVO: Investigar o desempenho de indivíduos idosos cognitivamente saudáveis e de outros com DA provável leve na versão brasileira da ACE-R. MÉTODOS: O teste foi administrado a um grupo de 31 pacientes com DA provável leve e a 114 idosos cognitivamente saudáveis. Destes, 62 foram equiparados aos pacientes por idade e escolaridade. Todos os participantes incluídos tinham idade 60 anos e 4 anos de escolaridade. Não apresentavam sintomatologia depressiva associada, definida como pontuação > 7 na Escala Cornell para Depressão em Demência. O comprometimento cognitivo dos pacientes foi evidenciado por pontuação < 123 na Escala Mattis de Avaliação de Demência (DRS). Os controles apresentaram escore total na DRS 123. Dados normativos foram extraídos da amostra total de indivíduos sadios. Foi analisada a correlação entre a ACE-R e o Teste de Memória de Figuras (BCB-Edu), os de Fluência Verbal (Frutas e F.A.S.) e a Bateria de Avaliação Frontal. Os grupos/variáveis foram analisados pelos testes Qui-quadrado, Teste t de Student e Teste de Mann-Whitney. Analisou-se a influência da idade/escolaridade pelo ANOVA e Bonferroni (dados com distribuição normal) e pelo Teste de Kruskal- Wallis e Método Diferença Mínima Significativa (dados sem distribuição normal). Os índices de correlação de Pearson e Spearman foram utilizados para aferir a relação entre o desempenho na ACE-R e nos demais testes cognitivos. A acurácia da bateria foi investigada pela análise das áreas das curvas ROC. RESULTADOS: As médias (DP) de idade e escolaridade dos 62 controles foram de 77,82 (6,58) e 10,05 (4,98), e dos pacientes, 78,03 (6,74) e 9,97 (5,19), respectivamente. A amostra sadia foi subdividida em três faixas etárias (60-69, 70-79 e 80) e em três grupos de escolaridade (4-7, 8-11 e 12). As subescalas da ACE-R se correlacionaram significativamente com os demais testes. Os escores gerais da bateria e da DRS mostraram forte correlação A escolaridade influenciou em todos os escores da ACER. Já a idade interferiu nas subescalas Memória, Fluência e na pontuação total. A nota de corte < 78 na ACE-R demonstrou sensibilidade de 100% e especificidade de 82,26% para o diagnóstico de DA leve (ASC = 0,947). A nota de corte para DA determinada pela razão VLOM foi de > 3,22 (ASC = 0,836; sens. 67,74%; espec. 96,77% e VPP 91,73%). CONCLUSÕES: A versão brasileira da ACE-R provou ser um instrumento de boa acurácia e de propriedades diagnósticas satisfatórias para a avaliação cognitiva em nosso meio, tendo sido capaz de discriminar pacientes com DA leve de indivíduos controles, além de avaliar com eficiência vários domínios cognitivos comumente afetados em estágios iniciais da doença. Os dados normativos apresentados representam parâmetros úteis de normalidade em idosos brasileiros. / INTRODUCTION: The Addenbrooke\'s Cognitive Examination Revised (ACE-R) allows evaluation of five cognitive domains, namely: Attention and Orientation, Memory, Fluency, Language and Visuospatial. It is particularly useful in differentiating Alzheimer\'s disease (AD) from frontotemporal dementia (FTD). The instrument was adapted to the Brazilian population and this version has already been published by the authors. OBJECTIVES: To investigate the performance of healthy individuals and patients with mild probable AD in the ACE-R Brazilian version. METHODS: The test was administered to 31 AD patients and to 114 cognitively preserved elderly. Sixty two subjects of this healthy group were adequately matched to the patients for age and education. The participants included were aged 60 years, had 4 years of schooling and did not show depressive symptoms, defined by a score > 7 in the Cornell Scale for Depression in Dementia. Cognitive impairment was defined by a score < 123 in the Mattis Dementia Rating Scale (DRS), while control scores were 123 in the DRS. Normative data were extracted from the whole sample of healthy subjects. We correlated scores in the ACE-R with those in Memory tests from the BCB-Edu, with Verbal Fluency Tests (Fruits and F.A.S.) and with the Frontal Assessment Battery. Data were analyzed with Chi-square test, Students t test and Mann-Whitney test. The influence of age/educational level in ACE-R scores was investigated by ANOVA and Bonferroni Multiple test (normal distribution data) as well as by Kruskal-Wallis test and the Minimum Significant Difference test (non-normal distribution data). Pearsons and Spearmans correlation indexes were used to assess the relationship between performance in the ACE-R and other cognitive tests. The accuracy of the battery was investigated by ROC curve analysis. RESULTS: Mean (SD) age / schooling found in the groups were 77.82 (6.58) / 10.05 (4.98) for the 62 controls and 78.03 (6.74) / 9.97 (5.19) for the patients, respectively. The healthy sample of 114 subjects was divided into three age groups (60-69, 70-79 and 80 years) and into three groups according to education (4-7, 8-11 and 12 years). The performance in the ACE-R subscales significantly correlated with that in the other cognitive instruments. The total scores from both ACE-R and DRS were strongly correlated between themselves. The educational status influenced the ACE-R sub-scores. Age interfered in the Memory, Fluency and in the ACE-R composite score. The cut-off point < 78 of ACE-R demonstrated 100% of sensitivity and 82.26% of specificity for the diagnosis of mild AD (AUC = 0,947). The VLOM cut-off point to determinate AD was > 3.22 (AUC = 0.836; sens. 67.74%; spec. 96.77% and PPV 91.73%). CONCLUSIONS: The Brazilian version of the ACE-R displayed high accuracy and great diagnostic properties for cognitive assessment in our milieu; also it was able to discriminate patients with mild AD from cognitively healthy individuals. In addition, the ACE-R efficiently assesses multiple cognitive domains that are commonly affected in the early stages of dementia. Normative data presented here represent useful parameters for the clinical use of the ACE-R in Brazilian elderly.
12

Addenbrooke\'s Cognitive Examination - Revised (ACE-R): adaptação transcultural, dados normativos de idosos cognitivamente saudáveis e de aplicabilidade como instrumento de avaliação cognitiva breve para pacientes com doença de Al / Addenbrookes Cognitive ExaminationRevised (ACE-R): cross-cultural adaptation, normative data for cognitively preserved elderly and its applicability as a brief cognitive evaluation tool for mild probable Alzheimers disease patients

Viviane Amaral Carvalho 17 September 2009 (has links)
INTRODUÇÃO: A Addenbrookes Cognitive Examination Revised (ACE-R) avalia cinco domínios cognitivos em conjunto e também oferece notas parciais para cada um deles, a saber: Atenção e Orientação, Memória, Fluência, Linguagem e Habilidades VisuaisEspaciais. Essa bateria tem se mostrado útil na diferenciação entre a doença de Alzheimer (DA) e a demência frontotemporal (DFT) em outros países. O instrumento foi submetido à adaptação para o português e sua versão brasileira foi previamente publicada pelos autores. OBJETIVO: Investigar o desempenho de indivíduos idosos cognitivamente saudáveis e de outros com DA provável leve na versão brasileira da ACE-R. MÉTODOS: O teste foi administrado a um grupo de 31 pacientes com DA provável leve e a 114 idosos cognitivamente saudáveis. Destes, 62 foram equiparados aos pacientes por idade e escolaridade. Todos os participantes incluídos tinham idade 60 anos e 4 anos de escolaridade. Não apresentavam sintomatologia depressiva associada, definida como pontuação > 7 na Escala Cornell para Depressão em Demência. O comprometimento cognitivo dos pacientes foi evidenciado por pontuação < 123 na Escala Mattis de Avaliação de Demência (DRS). Os controles apresentaram escore total na DRS 123. Dados normativos foram extraídos da amostra total de indivíduos sadios. Foi analisada a correlação entre a ACE-R e o Teste de Memória de Figuras (BCB-Edu), os de Fluência Verbal (Frutas e F.A.S.) e a Bateria de Avaliação Frontal. Os grupos/variáveis foram analisados pelos testes Qui-quadrado, Teste t de Student e Teste de Mann-Whitney. Analisou-se a influência da idade/escolaridade pelo ANOVA e Bonferroni (dados com distribuição normal) e pelo Teste de Kruskal- Wallis e Método Diferença Mínima Significativa (dados sem distribuição normal). Os índices de correlação de Pearson e Spearman foram utilizados para aferir a relação entre o desempenho na ACE-R e nos demais testes cognitivos. A acurácia da bateria foi investigada pela análise das áreas das curvas ROC. RESULTADOS: As médias (DP) de idade e escolaridade dos 62 controles foram de 77,82 (6,58) e 10,05 (4,98), e dos pacientes, 78,03 (6,74) e 9,97 (5,19), respectivamente. A amostra sadia foi subdividida em três faixas etárias (60-69, 70-79 e 80) e em três grupos de escolaridade (4-7, 8-11 e 12). As subescalas da ACE-R se correlacionaram significativamente com os demais testes. Os escores gerais da bateria e da DRS mostraram forte correlação A escolaridade influenciou em todos os escores da ACER. Já a idade interferiu nas subescalas Memória, Fluência e na pontuação total. A nota de corte < 78 na ACE-R demonstrou sensibilidade de 100% e especificidade de 82,26% para o diagnóstico de DA leve (ASC = 0,947). A nota de corte para DA determinada pela razão VLOM foi de > 3,22 (ASC = 0,836; sens. 67,74%; espec. 96,77% e VPP 91,73%). CONCLUSÕES: A versão brasileira da ACE-R provou ser um instrumento de boa acurácia e de propriedades diagnósticas satisfatórias para a avaliação cognitiva em nosso meio, tendo sido capaz de discriminar pacientes com DA leve de indivíduos controles, além de avaliar com eficiência vários domínios cognitivos comumente afetados em estágios iniciais da doença. Os dados normativos apresentados representam parâmetros úteis de normalidade em idosos brasileiros. / INTRODUCTION: The Addenbrooke\'s Cognitive Examination Revised (ACE-R) allows evaluation of five cognitive domains, namely: Attention and Orientation, Memory, Fluency, Language and Visuospatial. It is particularly useful in differentiating Alzheimer\'s disease (AD) from frontotemporal dementia (FTD). The instrument was adapted to the Brazilian population and this version has already been published by the authors. OBJECTIVES: To investigate the performance of healthy individuals and patients with mild probable AD in the ACE-R Brazilian version. METHODS: The test was administered to 31 AD patients and to 114 cognitively preserved elderly. Sixty two subjects of this healthy group were adequately matched to the patients for age and education. The participants included were aged 60 years, had 4 years of schooling and did not show depressive symptoms, defined by a score > 7 in the Cornell Scale for Depression in Dementia. Cognitive impairment was defined by a score < 123 in the Mattis Dementia Rating Scale (DRS), while control scores were 123 in the DRS. Normative data were extracted from the whole sample of healthy subjects. We correlated scores in the ACE-R with those in Memory tests from the BCB-Edu, with Verbal Fluency Tests (Fruits and F.A.S.) and with the Frontal Assessment Battery. Data were analyzed with Chi-square test, Students t test and Mann-Whitney test. The influence of age/educational level in ACE-R scores was investigated by ANOVA and Bonferroni Multiple test (normal distribution data) as well as by Kruskal-Wallis test and the Minimum Significant Difference test (non-normal distribution data). Pearsons and Spearmans correlation indexes were used to assess the relationship between performance in the ACE-R and other cognitive tests. The accuracy of the battery was investigated by ROC curve analysis. RESULTS: Mean (SD) age / schooling found in the groups were 77.82 (6.58) / 10.05 (4.98) for the 62 controls and 78.03 (6.74) / 9.97 (5.19) for the patients, respectively. The healthy sample of 114 subjects was divided into three age groups (60-69, 70-79 and 80 years) and into three groups according to education (4-7, 8-11 and 12 years). The performance in the ACE-R subscales significantly correlated with that in the other cognitive instruments. The total scores from both ACE-R and DRS were strongly correlated between themselves. The educational status influenced the ACE-R sub-scores. Age interfered in the Memory, Fluency and in the ACE-R composite score. The cut-off point < 78 of ACE-R demonstrated 100% of sensitivity and 82.26% of specificity for the diagnosis of mild AD (AUC = 0,947). The VLOM cut-off point to determinate AD was > 3.22 (AUC = 0.836; sens. 67.74%; spec. 96.77% and PPV 91.73%). CONCLUSIONS: The Brazilian version of the ACE-R displayed high accuracy and great diagnostic properties for cognitive assessment in our milieu; also it was able to discriminate patients with mild AD from cognitively healthy individuals. In addition, the ACE-R efficiently assesses multiple cognitive domains that are commonly affected in the early stages of dementia. Normative data presented here represent useful parameters for the clinical use of the ACE-R in Brazilian elderly.
13

不同訊息的目標設定對內在動機的影響

林文蘭, LIN, WEN-LAN Unknown Date (has links)
認知評價理論(cognitive evaluation theory )認為個人行為的自我控制感以及能 力感會影響內在動機。本研究的目的即是在探討相同目標下個體對目標的知覺<能力 知覺與控制知覺>如何影響內在動機。 本研究採用實驗法,研究樣本是政治大學學生99名,隨機分派受試到三個實驗組( 這三組受試的目標相同,但提供他們不同的目標訊息:無其他訊息、能力訊息與控制 訊息)和一個控制組(這組受試無目標設定),實驗作業為七巧板拼圖,每一位受試 皆做作業15分鐘,然後測量其內在動機,內在動機的指標有二個:態度測量(受試 對作業的興趣及喜好程度)和行為測量(實驗結束後的休息期間,受試繼續做作業的 時間)。 實驗結果採用Dunna 的事前考驗分析,分析時又將每一個實驗組分別區分為已達到目 標和未達到目標兩組,然後進行一些檢驗,結果顯示:(1)目標組受試的內在動機 較控制組低(2)在控制訊息下,不論達到目標與否,受試的內在動機均較控制組受 試低;(3)在控制訊息下,已達到目標組的內在動機較未達到組低。最後,以認知 評價理論加以討論之。
14

Évaluation systématique des effets de la tDCS sur le DLPFC et applications en technologies de l'information

Dumont, Laurence 08 1900 (has links)
No description available.
15

套票型式與消費者規範導向對轉換與續購行為之影響 / The Effects of Bundled Ticket Forms and Consumer Regulatory Focus on Switching and Repurchase Behavior

邱亞康, Chiu ,Ya-Kang Unknown Date (has links)
本研究經由兩個系列的實驗設計以探討套票的使用行為與續購行為。其中,實驗一是以虛擬情境檢視套票型式影響消費者的使用意圖,並以受測者的規範導向做為調節變數;實驗二則更進一步地以較接近真實生活的情境來進行操弄,更明確地檢測了消費者對套票的實際使用情形以及續購行為,除仍以受測者的生理規範導向做為調節變數,另探討了套票持有的前期與後期對使用行為的調節效果。 實驗一的結果顯示透過不同套票類型所引發持有者沉入成本上的差異,可能導致受測者在套票的使用意願不同。具體來說,愈是能讓受測者感受到不使用便等同於虧損的套票,受測者的使用意願便會更高。此外,不同規範導向的受測者所重視的目標不同。積極導向動機較強的受測者,行為較易受到努力得到想要結果的動機驅策,所以比較在意結果是否能獲得之前欠缺的東西;反過來說,保守導向動機較強的受測者,行為較易受到努力保持現有結果的動機引導,所以比較在意結果是否會失去之前擁有的東西。以不同動機系統為主的不同類型受測者的行為會有很大的差異。積極導向者比較容易追尋更完美的結果,所以當競爭者推出可能是較佳的替代品時,轉換意願較高;至於保守導向者則較在意持有現有可接受的結果,所以發現可能是較佳的替代品時,則寧願使用手中持有的套票。 至於實驗二的結果則顯示受測者在套票持有的前期較易於使用套票,換言之,隨著套票持有的時間愈久,對未使用完畢套票的沉入成本感受會隨著時間降低,使用套票的可能性也就因此愈低。此外,不同的套票型式對保守導向者的影響比較大,對保守導向動機較強的受測者而言,若所持有的套票型式是較容易感受到當未使用套票時,就意謂著沉入成本無法回收時,使用套票的意願會較高。而當持有的型式是較不容易感受到套票成本的型式時,使用此套票的可能性就相對降低了。但是積極導向動機系統為主的受測者來說,套票的實體型式對使用行為的差異就不太明顯了。不同型式的套票,並不會對積極導向者產生太大使用行為上的差異。 若保守導向者持有的是較容易感受到此套票成本的型式時,在套票持有的前期與後期間的使用差距不太會有明顯的改變,也就是說,他們比較不會因為套票持有的時間較久就明顯地降低使用行為,但若持有的是比較不容易感受到成本的套票時,在套票持有的後期會比前期容易不去使用套票。至於對積極導向者來說,這項因為套票型式上的差別造成在持有套票的前期與後期使用套票上的變化就不太明顯,事實上,積極導向者無論持有何種型式的套票,在後期都會明顯的降低使用套票的行為。 當套票使用完畢後,原持有的是較不容易感受到成本的套票型式受測者,續購意願比較高。而原持有的是較容易感受到套票成本的型式時,相對上的續購意願會較低。這項影響僅對保守導向者有影響,至於對積極導向者來說,就沒有什麼明顯的差異。 研究的結果大致與研究假說一致,因此,對於理論與實務上亦據本研究的結論提一些的建議。 關鍵詞: 沉入成本效果、規範導向論、動機系統、價格組合、套票、認知評估論 / This study utilized two experimental designs in testing consumer behavior in the usage and repurchase of bundled tickets (price bundling). In the first experiment, a traditional context was employed by using respondent regulatory focus as the moderator to test the impact of bundled ticket types on consumer usage intention. In the second experiment, a more realistic context was employed to examine consumers’ real usage and repurchase behavior with the bundle. Here in addition to using respondents’ regulatory focus as pure-moderator, study two also included bundling quasi-moderator—possession phases. The results of the first study showed that the difference in sunk cost effects caused by the two types of bundling would result in different bundling utilization intentions. Moreover, respondents within different motivation systems showed significantly different behavior patterns—promotion focus respondents were more likely to seek better gains, thus when competitors provided better alternatives, these respondents were more likely to make the switch. Prevention focus respondents, on the other hand, cared more about losses, making them more likely to remain with the original service provider. The result of the second study showed that compared with the later phase, bundling usage propensity was higher in the earlier holding phase. Moreover, different forms of bundled tickets had different extent influences on prevention focus respondents. Prevention focus respondents held that separate types caused them to have higher intentions in using bundling, but they would be relatively less likely to use bundling when they were in possession of an integrated one. However, the effect of different types of bundling on the usage behavior of promotion focus respondents was not significant. Among prevention focus respondents who were more sensitive to bundled ticket costs, there is no significant difference in their utilization of bundling from earlier to later phases. However, if the bundled tickets in possession were the integrated type, they were less likely to use the tickets in the later phase than in the earlier one. Regarding promotion focus respondents, the effect of bundled ticket form in the usage of said tickets in the two phases was not significant. In fact, no matter what form the bundling took, promotion focus respondents displayed significantly less use for the bundling in the later phase. Bundling possession forms had the direct impact on repurchasing behavior. In this regard, respondents holding integrated bundling types displayed a higher incidence of repurchase behavior. This was, however, only effective when it came to prevention focus respondents; no significant difference was found regarding promotion focus respondents. The results of this study yielded suggestions for both theoretical and practical areas. Key Words: Sunk Cost Effect, Regulatory Focus Theory, Motivation Systems, Price Bundling, Bundled Ticket, Cognitive Evaluation Theory
16

Perceptions of the appraisal system for teachers held by heads of departments at selected primary schools in the East London region, Eastern Cape Province

Nass, Julia Diane 01 1900 (has links)
This dissertation of a limited scope focuses on the Heads of Departments’ perceptions of the Integrated Quality Management System for teachers at selected quintile 5 Primary Schools in the East London Region of the Eastern Cape Province. It reveals the positive and negative aspects of the staff appraisal system, its implementation and purpose, as well as views on its improvement. By means of a qualitative case study and the Cognitive Evaluation Theory as theoretical framework, the researcher has determined that the Performance Measurement component of the appraisal system has a detrimental effect on the intrinsic motivation of teachers and that it should be separated from the Developmental Appraisal. Individual interviews with the Heads of Departments revealed the need for revising the assessment rubric in order for Performance Measurement to be conducted effectively. / Educational Leadership and Management / M. Ed. (Education Management)

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