No description available.

Stigmatized obese individuals tend to internalize the pervasive weight stigma which might lead to self-discrimination and increased psychopathology. While explicit and implicit weight stigma can be measured using self-report questionnaires and Implicit Association Tests (IAT), respectively, the assessment of self-discrimination relied solely on self-report. The present study sought to develop an IAT measuring implicit self-discrimination (SD-IAT) in samples of obese individuals with and without binge-eating disorder (BED). Seventy-eight individuals were recruited from the community and individually matched in three groups. Obese participants with BED, obese participants without BED (OB), and a normal weight control group without eating disorder psychopathology (HC) were assessed with the SD-IAT and other measures relevant for convergent and discriminant validation. Results revealed significantly higher implicit self-discrimination in the BED group when compared to both OB and HC. Furthermore, significant correlations were found between the SD-IAT with body mass index, experiences of weight stigma, depressive symptoms, and implicit self-esteem. Finally, implicit self-discrimination predicted eating disorder psychopathology over and above group membership, and experiences of weight stigma. This study provides first evidence of the validity of the SD-IAT. Assessing implicit self-discrimination might further increase understanding of weight stigma and its significance for psychosocial functioning among vulnerable obese individuals.

Information systems researchers typically use self-report measures, such as questionnaires to study consumers’ online risk perception. The self-report approach captures the conscious perception of online risk but not the unconscious perception that precedes and dominates human being’s decision-making. A theoretical model in which implicit risk perception precedes explicit risk evaluation is proposed. The research model proposes that implicit risk affects both explicit risk and the attitude towards online purchase. In a direct path, the implicit risk affects attitude towards purchase. In an indirect path, the implicit risk affects explicit risk, which in turn affects attitude towards purchase. The stimulus used was a questionable web site offering pre-paid credit card services. Data was collected from 150 undergraduate students enrolled in a university. Implicit risk was measured using methods developed in social psychology, namely, single category-implicit association test. Explicit risk and attitude towards purchase were measured using a well-known instrument in the e-commerce risk literature. Preliminary, unconditioned analysis suggested that (a) implicit risk does not affect explicit risk, (b) explicit risk does not affect attitude to purchase, and (c) implicit risk does not affect attitude towards purchase.

Speech often occurs in challenging listening environments, such as masking noise. Visual cues have been found to enhance speech intelligibility in noise. Although the facilitatory role of audiovisual integration for perception of speech has been established in native speech, it is relatively unclear whether it also holds true for speech produced by nonnative speakers. Native listeners were presented with English sentences produced by native English and native Korean speakers. The sentences were in either audio-only or audiovisual conditions. Korean speakers were rated as more accented in audiovisual than in the audio-only condition. Visual cues enhanced speech intelligibility in noise for native English speech but less so for nonnative speech. Reduced intelligibility of audiovisual nonnative speech was associated with implicit Asian-Foreign association, suggesting that listener-related factors partially influence the efficiency of audiovisual integration for perception of speech produced by nonnative speakers. / text

Embora a tecnologia nuclear tenha aplicações benéficas para diversas áreas, como saúde, indústria, agricultura, produção de energia, entre outras, a sua aceitação ainda é restrita e há várias barreiras para o seu uso. A falta de conhecimento assertivo sobre essa tecnologia gera preconceito com relação à sua utilização. Preconceitos podem ser explícitos, que são conscientes, ou implícitos, inconscientes. No entanto, conscientes ou inconscientes, eles influenciam o comportamento e as atitudes. As experiências nas memórias explícita e implícita podem ser transferidas de uma para a outra. Assim, preconceitos ou associações inconscientes podem ser modificados pela memória explícita, ou seja, um novo conhecimento pode reduzi-los ou revertê-los. Para uma educação transformadora, o professor tem um papel central; entretanto, para que ele transmita o conhecimento de forma imparcial, é necessário que tenha uma visão livre de preconceitos. Esse trabalho visa desenvolver uma metodologia com apoio em neurociências por meio da qual as associações implícitas referentes às aplicações da tecnologia nuclear por parte dos professores de ciências sejam identificadas e possíveis preconceitos implícitos sejam modificados por meio de novos conhecimentos explícitos. Para identificar preconceitos implícitos são necessários testes específicos de memória implícita. O Teste de Associação Implícita (TAI) foi selecionado para esse trabalho. Seguindo as etapas fornecidas pelo software FreeIAT, o TAI foi customizado a fim de comparar as associações implícitas de participantes com relação às áreas nuclear e petróleo e sua consistência foi averiguada por um pré-teste aplicado a um grupo de especialistas (grupo controle) e de leigos, cujos resultados determinaram um bom valor de Alfa de Cronbach. Um programa multissensorial de 5 horas foi desenvolvido e realizado no Instituto de Pesquisas Energéticas e Nucleares (IPEN) para um grupo de professores de ciências. O TAI foi aplicado no início e ao término do programa e os resultados das associações implícitas foram comparados. Após seis meses, o TAI foi reaplicado ao mesmo grupo de professores para verificar se as associações implícitas se mantiveram estáveis. Esse programa multissensorial foi comparado com um programa de 12 semanas de ensino tradicional com aulas expositivas realizado no IPEN para alunos ingressantes na pós-graduação. O programa multissensorial foi efetivo para mudar e manter as associações implícitas dos professores referentes às aplicações benéficas da tecnologia nuclear, diferentemente do ensino tradicional com aulas expositivas. Esse trabalho demonstrou que é possível quebrar paradigmas e preconceitos. A abordagem multissensorial possibilitou um conhecimento enriquecido sobre as aplicações da tecnologia nuclear, ou seja, promoveu novas experiências na memória explícita que modificaram as associações prévias armazenadas na memória implícita. Assim, o programa multissensorial demonstrou ser uma ferramenta eficaz, capaz de produzir e manter mudanças nas associações implícitas, de baixo custo e pode ser aplicado em diversas áreas para mudar as associações implícitas e reverter preconceitos. Os resultados demonstraram que esse trabalho de doutorado teve êxito no que se propôs, contribuindo, assim, para a difusão do conhecimento das aplicações benéficas da tecnologia nuclear e, consequentemente, para a sua desmitificação. Essa metodologia completa poderá ser empregada em outras áreas para identificar, modificar e/ou reverter preconceitos ou estereótipos implícitos. / Although the applications of nuclear technology benefit several fields, such as health, industry, agriculture, energy production, among others, its public acceptance is still reduced and there are various barriers to its use. A lack of assertive knowledge about this technology generates prejudice against its use. Prejudices may be explicit at the conscious level or implicit operating outside awareness. Nevertheless, either conscious or unconscious, prejudices interfere with behavior and attitudes. The experiences in the explicit and implicit memories can be transferred from one to the other; thus unconscious prejudices or associations may be modified by the explicit memory, that is, new knowledge may reduce or even reverse them. The teachers play a critical role for transforming education; however, for sharing balanced knowledge they must have a perspective without prejudices. This work aims to develop a neuroscience-based methodology through which implicit associations of Brazilian science teachers towards nuclear technology may be assessed and possible implicit prejudices may be changed by new knowledge. In order to identify implicit prejudices, specific implicit memory tests are required. The Implicit Association Test (IAT) was chosen for this work. By following the steps provided by the software FreeIAT, the IAT was customized aiming to compare the implicit associations of respondents towards nuclear and oil. A pretest with nuclear specialists (control group) and lay people was administered to check the consistency of the customized IAT. The Cronbach\'s alpha was applied to measure the reliability of the test and showed good internal consistency. A 5-hour multisensory program for science teachers was designed and administered at the Instituto de Pesquisas Energéticas e Nucleares (IPEN). The IAT was administered at the beginning and at the end of the program and the results of the implicit associations were compared. After a six-month period, the IAT was re-administered to the same group of teachers to verify whether the implicit associations remained stable. This multisensory program was compared to a 12-week traditional teaching program with lecture classes held at IPEN for incoming post-graduation students. The multisensory program was effective for changing and maintaining the implicit associations of teachers towards the beneficial applications of nuclear technology, unlike the traditional teaching program with lecture classes. This work demonstrated that it is possible to break paradigms and prejudices. The multisensory program enabled an enriched knowledge about the applications of nuclear technology, that is, it promoted new experiences in the explicit memory, which modified the previous associations stored in the implicit memory. Therefore, the multisensory program has proven to be a successful, cost-effective tool, which is able to cause and maintain changes in implicit associations and can be applied in several areas where changes in implicit associations and prejudice reversal are desired. The results demonstrated that the proposed doctoral research was effective, thus contributing to the diffusion of knowledge of the beneficial applications of nuclear technology and, consequently, to its demythification. This methodology may be administered to other fields to identify, modify and/or reduce implicit prejudices or stereotypes.

The objectives of this research were to create explicit and implicit measures of prejudice against homeless, and to identify factors associated with negative attitudes toward this population. To meet these objectives several studies collected in four articles were made. In the first article the literature on prejudice against homeless was reviewed. In this study was found that both, in Latin America and in the countries of industrialized West, have been reported stereotypes towards this population related to mental illness and drug addiction, as well as acts of discrimination related to limitations in the use of public space. Article two corresponded to a study of cross-cultural creation and validation of a scale of prejudice against homeless, created with basics of Item Response Theory and the Allport's scale of prejudice. The created scale presented evidence of construct validity, convergent validity and good internal consistency. It was also verified, in part, the Allport's theory of the scale of prejudice. The third article aimed at identifying factors associated with prejudice against homeless, and to build and test a hierarchical model to explain variations in the levels of this prejudice. The proposed model had four levels of prejudice mediations, good fit indices, and included the variables social dominance orientation, basic values, egocentrism, perception of insecurity and quality of contact with homeless people. In the fourth article was described the process of creating an implicit association test about attitudes toward homeless, and was tested scores correlation levels acquired with this test and those acquired with the scale established in article two. The results indicated that there are strong associations between concepts representing the homeless people and negative stereotypes towards this population. No correlation between the scores on the two measures was found, in line with other studies on implicit and explicit measures of stereotypes. / Los objetivos de esta tesis fueron la creación de medidas explícitas e implícitas del prejuicio contra habitantes de calle, y la identificación de algunos factores asociados con actitudes negativas hacia esta población. Para responder a estos objetivos se realizaron varios estudios reunidos en cuatro artículos y presentados en este documento como capítulos. En el primer capítulo, se realizó un estudio de revisión de la literatura sobre el prejuicio contra habitantes de calle. En este estudio se encontró que tanto en Latinoamérica como en los países de occidente industrializado, se han reportado estereotipos hacia esta población relacionados con la enfermedad mental y la adicción a las drogas; así como actos de discriminación relacionados con limitaciones en el uso del espacio público. El capítulo dos corresponde a un estudio de creación y validación transcultural de una escala de prejuicio contra habitantes de calle, fundamentada en la teoría de la respuesta al ítem y en la teoría de la escalada comportamental del prejuicio de Allport. La escala creada presentó evidencias de validez de constructo, validez convergente y buenos índices de consistencia interna. También se comprobó parcialmente la hipótesis de la escala del prejuicio de Allport. En el tercer capítulo se buscó identificar los factores asociados al prejuicio contra habitantes de calle, así como construir y probar un modelo jerárquico para explicar variaciones en los niveles de este prejuicio. El modelo propuesto tuvo cuatro niveles de mediación del prejuicio, buenos índices de ajuste, e incluyó las variables dominancia social, valores básicos, egocentrismo, percepción de inseguridad y calidad del contacto con habitantes de calle. En el cuarto capítulo se describió el proceso de creación de un Test de Asociaciones Implícitas sobre actitudes hacia habitantes de calle, y se probó los niveles de correlación entre los puntajes adquiridos con este test y los adquiridos con la escala creada en el artículo dos. Los resultados indicaron que hubo fuertes asociaciones entre los conceptos que representan a los habitantes de calle y los estereotipos negativos hacia esta población. No se encontró una correlación entre los puntajes en las dos pruebas, acorde con los resultados de otros estudios sobre medidas implícitas y explícitas de estereotipos.

Embora a tecnologia nuclear tenha aplicações benéficas para diversas áreas, como saúde, indústria, agricultura, produção de energia, entre outras, a sua aceitação ainda é restrita e há várias barreiras para o seu uso. A falta de conhecimento assertivo sobre essa tecnologia gera preconceito com relação à sua utilização. Preconceitos podem ser explícitos, que são conscientes, ou implícitos, inconscientes. No entanto, conscientes ou inconscientes, eles influenciam o comportamento e as atitudes. As experiências nas memórias explícita e implícita podem ser transferidas de uma para a outra. Assim, preconceitos ou associações inconscientes podem ser modificados pela memória explícita, ou seja, um novo conhecimento pode reduzi-los ou revertê-los. Para uma educação transformadora, o professor tem um papel central; entretanto, para que ele transmita o conhecimento de forma imparcial, é necessário que tenha uma visão livre de preconceitos. Esse trabalho visa desenvolver uma metodologia com apoio em neurociências por meio da qual as associações implícitas referentes às aplicações da tecnologia nuclear por parte dos professores de ciências sejam identificadas e possíveis preconceitos implícitos sejam modificados por meio de novos conhecimentos explícitos. Para identificar preconceitos implícitos são necessários testes específicos de memória implícita. O Teste de Associação Implícita (TAI) foi selecionado para esse trabalho. Seguindo as etapas fornecidas pelo software FreeIAT, o TAI foi customizado a fim de comparar as associações implícitas de participantes com relação às áreas nuclear e petróleo e sua consistência foi averiguada por um pré-teste aplicado a um grupo de especialistas (grupo controle) e de leigos, cujos resultados determinaram um bom valor de Alfa de Cronbach. Um programa multissensorial de 5 horas foi desenvolvido e realizado no Instituto de Pesquisas Energéticas e Nucleares (IPEN) para um grupo de professores de ciências. O TAI foi aplicado no início e ao término do programa e os resultados das associações implícitas foram comparados. Após seis meses, o TAI foi reaplicado ao mesmo grupo de professores para verificar se as associações implícitas se mantiveram estáveis. Esse programa multissensorial foi comparado com um programa de 12 semanas de ensino tradicional com aulas expositivas realizado no IPEN para alunos ingressantes na pós-graduação. O programa multissensorial foi efetivo para mudar e manter as associações implícitas dos professores referentes às aplicações benéficas da tecnologia nuclear, diferentemente do ensino tradicional com aulas expositivas. Esse trabalho demonstrou que é possível quebrar paradigmas e preconceitos. A abordagem multissensorial possibilitou um conhecimento enriquecido sobre as aplicações da tecnologia nuclear, ou seja, promoveu novas experiências na memória explícita que modificaram as associações prévias armazenadas na memória implícita. Assim, o programa multissensorial demonstrou ser uma ferramenta eficaz, capaz de produzir e manter mudanças nas associações implícitas, de baixo custo e pode ser aplicado em diversas áreas para mudar as associações implícitas e reverter preconceitos. Os resultados demonstraram que esse trabalho de doutorado teve êxito no que se propôs, contribuindo, assim, para a difusão do conhecimento das aplicações benéficas da tecnologia nuclear e, consequentemente, para a sua desmitificação. Essa metodologia completa poderá ser empregada em outras áreas para identificar, modificar e/ou reverter preconceitos ou estereótipos implícitos. / Although the applications of nuclear technology benefit several fields, such as health, industry, agriculture, energy production, among others, its public acceptance is still reduced and there are various barriers to its use. A lack of assertive knowledge about this technology generates prejudice against its use. Prejudices may be explicit at the conscious level or implicit operating outside awareness. Nevertheless, either conscious or unconscious, prejudices interfere with behavior and attitudes. The experiences in the explicit and implicit memories can be transferred from one to the other; thus unconscious prejudices or associations may be modified by the explicit memory, that is, new knowledge may reduce or even reverse them. The teachers play a critical role for transforming education; however, for sharing balanced knowledge they must have a perspective without prejudices. This work aims to develop a neuroscience-based methodology through which implicit associations of Brazilian science teachers towards nuclear technology may be assessed and possible implicit prejudices may be changed by new knowledge. In order to identify implicit prejudices, specific implicit memory tests are required. The Implicit Association Test (IAT) was chosen for this work. By following the steps provided by the software FreeIAT, the IAT was customized aiming to compare the implicit associations of respondents towards nuclear and oil. A pretest with nuclear specialists (control group) and lay people was administered to check the consistency of the customized IAT. The Cronbach\'s alpha was applied to measure the reliability of the test and showed good internal consistency. A 5-hour multisensory program for science teachers was designed and administered at the Instituto de Pesquisas Energéticas e Nucleares (IPEN). The IAT was administered at the beginning and at the end of the program and the results of the implicit associations were compared. After a six-month period, the IAT was re-administered to the same group of teachers to verify whether the implicit associations remained stable. This multisensory program was compared to a 12-week traditional teaching program with lecture classes held at IPEN for incoming post-graduation students. The multisensory program was effective for changing and maintaining the implicit associations of teachers towards the beneficial applications of nuclear technology, unlike the traditional teaching program with lecture classes. This work demonstrated that it is possible to break paradigms and prejudices. The multisensory program enabled an enriched knowledge about the applications of nuclear technology, that is, it promoted new experiences in the explicit memory, which modified the previous associations stored in the implicit memory. Therefore, the multisensory program has proven to be a successful, cost-effective tool, which is able to cause and maintain changes in implicit associations and can be applied in several areas where changes in implicit associations and prejudice reversal are desired. The results demonstrated that the proposed doctoral research was effective, thus contributing to the diffusion of knowledge of the beneficial applications of nuclear technology and, consequently, to its demythification. This methodology may be administered to other fields to identify, modify and/or reduce implicit prejudices or stereotypes.

O objetivo geral desta tese, composta por um artigo teórico e três empíricos, foi investigar o desenvolvimento de atitudes raciais em crianças. O primeiro estudo foi uma revisão sistemática de estudos da Psicologia brasileira sobre preconceito racial. O segundo envolveu a criação e validação de um banco de estímulos para utilização em pesquisas científicas, o BICMulticor. O terceiro utilizou medidas implícitas (Priming Avaliativo e Teste de Associação Implícita) e explícitas de atitude para avaliar o desenvolvimento de atitudes raciais em crianças brancas, pardas e pretas de Porto Alegre e Salvador. Participaram 542 crianças, de seis a 14 anos de idade. Foram encontradas diferenças nas atitudes implícitas entre os grupos raciais e também entre as duas cidades avaliadas. O quarto foi um estudo sobre as diferenças de categorização racial entre baianos, gaúchos e norte-americanos. A categorização racial sofreu forte influência contextual e foi semelhante na Bahia e nos Estados Unidos. / This dissertation, composed by one theoretical and three empirical papers, aimed to investigate the development of race attitudes in children. The first study was a systematic review of Brazilian psychological studies on racial prejudice. The second one involved the development and validation of a set of children’s portraits to be used as stimuli on scientific research, the BIC-Multicor. The third one used implicit (Evaluative Priming and the Implicit Association Test) and explicit measures of attitude to investigate the development of race attitudes in White, Pardo and Black children (N = 542), aged six to 14, from Porto Alegre and Salvador. Implicit attitudes were different between cities and also between racial groups. The forth study assessed differences in racial categorization in Bahia, Rio Grande do Sul and the United States. Racial categorization was influenced by context and similar results were found between participants from Bahia and the US.

Syftet med den här studien var att undersöka om mental trötthet leder till ökad diskriminering av överviktiga. Genom att använda en dual process-modell, inleddes undersökningen med en bedömningsuppgift som deltagarna fick utföra i labbmiljö. Vid ett senare tillfälle fick var och en ombesörja att de genomförde ett implicit associationstest (IAT), följt av en explicit graderingsfråga, där deltagarna uppskattade en eventuell skillnad i normal- kontra överviktigas mentala prestation. Syftet med dessa tester var att ta reda på om diskriminering mot överviktiga existerade inom gruppen i sin helhet på såväl implicit som explicit nivå. Hälften av gruppen hade genomgått en kraftig mental trötthetsbelastning före bedömningsuppgiften, med avsikt att se om bias mot överviktiga ökade vid mental trötthet. Resultatet för alla testningar var för sig visade på diskriminering mot överviktiga, men inte att det förekom någon högre diskriminering vid mental trötthet. Möjliga förbättringar i undersökningsdesignen diskuteras, liksom praktiska implikationer. / This study examined whether mental fatigue leads to increased discrimination against the obese. Using a dual process model, participants took part in an assessment task in a controlled laboratory setting, and thereafter completed an implicit association test (IAT), followed by an explicit question, where participants were asked to grade variances in the mental capacity between normal- versus overweight individuals. The intention was to explore possible obesity discrimination. Half of the group previously completed a strenuous memory task, with the purpose of achieving severe fatigue, in order to explore whether the bias increases with mental fatigue. Although the results revealed discrimination in all tests, there was no evidence of increased discrimination in mental fatigue. Possible improvement in the research design is discussed, as well as practical implications.

Die Dissertation besteht aus einem Einleitungsteil sowie drei empirischen Zeitschriftenartikeln. Die Einleitung liefert den theoretischen Hintergrund, integriert die drei Zeitschriftenartikel und geht auf anknüpfende Forschungsfragen ein. Der erste Artikel befasst sich mit unterschiedlichen indirekten Messverfahren zur Erfassung impliziter Selbstwertschätzung und untersucht deren Reliabilität sowie konvergente und diskriminante Validität. Der zweite Artikel untersucht, wie Diskrepanzen zwischen impliziter und expliziter Selbstwertschätzung mit defensiven Reaktionen auf soziales Feedback zusammenhängen. Der dritte Artikel untersucht schließlich Zusammenhänge zwischen Selbstwertdiskrepanzen und Indikatoren psychischer und physischer Gesundheit. / The dissertation consists of an introduction and three empirical journal articles. The introduction gives the theoretical background, integrates the three journal articles, and elaborates on future research questions. The first article investigates the reliability and convergent and discriminant validity of implicit self-esteem measures. The second article examines, how discrepancies between implicit and explicit self-esteem are connected to defensive reactions to social feedback. The third article investigates the relationship of self-esteem discrepancies to indicators of mental and physical health.