Made available in DSpace on 2016-04-04T18:29:36Z (GMT). No. of bitstreams: 1 Dalva Alice Rocha Mol.pdf: 3149572 bytes, checksum: f806553a69f59c46eb1df3caf215be1e (MD5) Previous issue date: 2007-05-18 / The assessment of cognitive abilities of children who have learning disabilities (slow learners) is a major topic in psychology research. This doctorate thesis investigates the cognitive abilities of schoolchildren who have difficulty learning. Two different groups of informants were analyzed. The first group comprised 60 7- and 8-year-old schoolchildren of both genders 30 slow learners and 30 fast learners from two state schools in the State of S?o Paulo, Brazil. The second group comprised 8 primary school teachers also from two state schools in the State of S?o Paulo. We used Woodcock-Johnson III Tests of Cognitive Abilities (WJ-III) composed of 10 tests, a questionnaire filled out by the teachers and an analysis of the pupils marks in Portuguese, Math and Science. The results from the Multivariate and Univariate Analysis of Variance showed significant differences between the group of slow learners and the group of fast learners. The Pearson Assessments showed the children s performance improved as they moved to higher grades. The children s marks were consistent with the results from the WJ-III. Therefore we concluded that the cognitive abilities are significantly different between fast and slow learners and that WJ-III can be used to analyze learning disabilities. / A avalia??o das habilidades cognitivas de crian?as que apresentam dificuldades de aprendizagem constitui-se um importante campo de investiga??o psicol?gica. Este estudo objetivou investigar as habilidades cognitivas de crian?as com e sem dificuldades de aprendizagem pela Bateria Woodcock-Johnson. Duas amostras foram compostas: a primeira amostra por 60 crian?as de ambos os sexos, sendo 30 participantes sem indica??o de dificuldades de aprendizagem e 30 com indica??o de dificuldades de aprendizagem, que freq?entavam a primeira e segunda s?rie do Ensino Fundamental de duas escolas p?blicas do interior do estado de S?o Paulo. A segunda amostra foi composta por oito professores de primeira e segunda s?ries de duas escolas p?blicas do interior do estado de S?o Paulo. Utilizou-se a Bateria de habilidades cognitivas Woodcock-Johnson III (WJ III), composta por 10 testes, um question?rio escolar preenchido pelos professores e as notas escolares obtidas em Portugu?s, Matem?tica e Ci?ncias. As An?lises da Vari?ncia Multivariada e Univariada apontaram os efeitos significativos no tipo de grupo e de s?rie escolar das habilidades cognitivas avaliadas pela WJ III. A correla??o de Pearson mostrou a rela??o entre as habilidades cognitivas e os indicadores de dificuldades de aprendizagem, apontados pelo professor, sobre as crian?as com e sem dificuldades de aprendizagem. As notas escolares tamb?m se associaram significativamente aos resultados da WJ III. Desta forma, concluiu-se que existem diferen?as significativas nas habilidades cognitivas entre crian?as com dificuldades e crian?as sem dificuldades de aprendizagem, e que a WJ III ? uma medida v?lida para avaliar tais dificuldades.

Made available in DSpace on 2016-04-04T18:29:56Z (GMT). No. of bitstreams: 1 Marcelo Gulini Chiodi.pdf: 2654186 bytes, checksum: 8afcc46d0d34b2195ce3af9b190696ab (MD5) Previous issue date: 2012-02-28 / Pontif?cia Universidade Cat?lica de Campinas / The study on how the different intellectual abilities interact and operate has always aroused man's curiosity due to his need to explain individual differences in the use of information. In this sense, this paper aims to adapt and validate the ten subtests that make up the extended version of the Woodcock-Johnson III Cognitive Abilities Battery (WJ-III Extended) taking into account the Brazilian reality. To this end, we developed four different studies: 1 - Adaptation of the battery (translation, creation and adaptation of items to the Brazilian reality); 2 - Convergent validation by comparing the results of the WJ-III Standard Battery with the Extended version; 3 and 4 - Validation of convergent criteria by comparing the results of two clinical groups, i.e., children diagnosed with Benign Childhood Epilepsy with Centrotemporal Spikes (BCECS) and children diagnosed with Attention Deficit and Hyperactivity Disorder (ADHD). To perform study 2, convergent validation, we evaluated 70 public primary and secondary school children, 43 male and 27 female, aged between 7 and 12. The obtained results were analyzed using Pearson's correlation and a Variance Analysis regarding sex and age of each instrument. Significant correlations were found between the total scores of the expanded WJ-III version and total scores of the standard WJ-III version (0.80), as well as between the subtests which assess Crystallized Intelligence (Gc) of both the expanded and the standard WJ-III (Gc) (0.77). Significant correlations were also observed when we compared the subtests used to assess other skills of both versions of the WJ-III battery (0.73). The Age variable differed significantly in both the expanded and the standard version, whereas the influence of the Sex X Age variable was only significant in the WJ-III standard version. To perform studies 3 and 4 that validated convergent criteria, we analyzed 21 children diagnosed with BCECS and 20 children diagnosed with ADHD aged between 7 and 12 of both sexes. The two clinical groups were matched with children without neurological disorders of the same age and sex. Information obtained in the tests was analyzed by means of a Variance Analysis for group, sex and age. The results of study 3 showed a lower performance of all evaluated skills in the BCECS group compared to the performance of children without neurological disorders. Regarding Study 4, the ADHD children group also showed lower performance in all skills when compared to the control group. Those data demonstrate the convergent validity between the Extended WJ-III and the Standard WJ-III, as well as the convergent criteria validity by differentiating two clinical groups. This could contribute to a more detailed diagnosis of the different cognitive abilities and widen the range of instruments used for intellectual evaluation. / O estudo da intera??o e funcionamento das diferentes habilidades intelectuais sempre despertou curiosidade devido ? necessidade do ser humano de esclarecer as diferen?as individuais no uso das informa??es. Neste sentido, o presente trabalho prop?s a adaptar e validar, para a realidade brasileira, os dez subtestes que comp?em a vers?o Ampliada da Bateria de Habilidades Cognitivas Woodcock-Johnson III (WJ-III Ampliada). Para a realiza??o deste projeto foram desenvolvidos 4 diferentes estudos: 1- adapta??o da bateria (tradu??o, cria??o e adapta??o de itens para a realidade brasileira); 2- validade convergente, comparando os resultados da bateria WJ-III Padr?o com a Ampliada; 3 e 4 - validade de crit?rio tipo concorrente, comparando os resultados de dois grupos cl?nicos, crian?as diagnosticadas com Epilepsia Benigna da Inf?ncia com Pontas centro-temporais (EBICT) e crian?as com o diagn?stico de Transtorno do D?ficit de Aten??o e Hiperatividade (TDAH). Para o estudo 2 de validade convergente, foram avaliadas 70 crian?as de escola p?blica do Ensino Fundamental e M?dio, sendo 43 do sexo masculino e 27 do sexo feminino, com faixa et?ria entre 7 e 12 anos. Os resultados obtidos foram analisados segundo a correla??o de Pearson e An?lise da Vari?ncia entre sexo e idade para cada instrumento. Foram encontradas correla??es significativas entre as pontua??es totais da WJ-III Ampliada e as pontua??es totais na WJ-III vers?o Padr?o de (0,80), assim como, entre os subtestes que avaliam Intelig?ncia Cristalizada (Gc) da WJ-III Ampliada com a WJ-III Padr?o (Gc) (0,77). Tamb?m foram observadas correla??es significativas quando relacionados os subtestes que avaliam as demais habilidades de ambas as vers?es da Bateria WJ-III (0,73). Houve diferen?a significativa para a vari?vel Idade tanto na vers?o Ampliada quanto na vers?o Padr?o. J? a influ?ncia da vari?vel Sexo X Idade foi significativa apenas na vers?o Padr?o da WJ-III. Com rela??o aos estudos 3 e 4 de validade de crit?rio do tipo concorrente, foram estudadas 21 crian?as diagnosticadas com EBICT e 20 diagnosticadas com TDAH, com faixa et?ria entre 7 e 12 anos e de ambos os sexos. Os dois grupos cl?nicos foram pareados por crian?as de mesma idade, sexo e diagnosticadas sem dist?rbios neurol?gicos. As informa??es obtidas nos testes foram analisadas segundo a An?lise de Vari?ncia entre grupo, sexo e idade. Os resultados do estudo 3 apontaram para um desempenho inferior em todas as habilidades avaliadas no grupo EBICT em compara??o ao desempenho de crian?as diagnosticadas sem dist?rbios neurol?gicos. No estudo 4 o grupo de crian?as diagnosticadas com TDAH tamb?m apresentou desempenho inferior em todas as habilidades ao comparar com o desempenho do grupo controle. Portanto, tais dados indicam que a Bateria WJ-III vers?o Ampliada possui validade convergente com a WJ-III vers?o Padr?o e validade de crit?rio tipo concorrente ao diferenciar dois grupos cl?nicos, podendo assim contribuir para um diagn?stico mais detalhado das v?rias habilidades cognitivas e enriquecer ainda mais as possibilidades de instrumentos para avalia??o intelectual.

Until recently, there was no dementia screening tool for Indigenous Australians and a paucity of information on the extent of dementia in Indigenous Australians. This thesis describes the development and validation of a tool to assess cognitive impairment in remote Indigenous Australians with the primary purpose of determining the prevalence of dementia and other associated conditions in this population. The tool was reevaluated with the larger prevalence sample and a short version of the tool was developed and evaluated. The Kimberley Indigenous Cognitive Assessment (KICA) tool was validated with Indigenous Australians aged over 45 years from the Kimberley region of Western Australia (n=70). The results were later confirmed in a larger sample from the remote Kimberley (n=363), and an additional sample in rural and remote areas of the Northern Territory (n=47). The KICA results were compared to independent consensus diagnoses using DSM-IV and ICD-10. Interpreters were used whenever participants were not proficient in English. These data led to the determination of a cut-off score of 33/34 out of a possible total score of 39 for the cognitive component of the KICA (KICA-Cog), with a sensitivity of 0.93 and specificity of 0.95 and AUC of 0.98. The tool is now widely used within remote areas of Australia. A short version of the KICACog (sKICA-Cog) was developed and found to be a valid brief screening tool for dementia in the Kimberley population, and had a cut-off score of 20/21 out of a possible 25, with a sensitivity of 0.89, specificity of 0.95 and AUC of 0.98. The sKICA-Cog should be used in combination with the KICA cognitive informant questionnaire (KICA-IQ). The KICA-IQ cut-off score of 2/3 out of a possible 16 was determined, with a sensitivity of 0.76 and specificity of 0.84 and AUC of 0.91. Using the validated KICA, the prevalence of dementia and cognitive impairment not dementia (CIND) was determined in a semi-purposive sample consisting of 363 Indigenous Australians aged over 45 years from 6 Aboriginal communities and one town in the Kimberley region. Participants were screened with the full KICA and 165 participants had an independent specialist review with consensus diagnoses. The prevalence of dementia was 12.4%, 5.2 times greater than the Australian prevalence of 2.4%, after age adjustment. The prevalence of CIND was 8.0%. Characteristics associated with dementia included older age, male gender (OR 3.1, 95% CI 1.4, 6.8), no formal education (OR 2.7, 95% CI 1.1, 6.7), smoking (OR 4.5, 95% CI 1.1, 18.6), previous stroke (OR 17.9, 95% CI 5.9, 49.7), epilepsy (OR 33.5, 95% CI 4.8, 232.3) and head injury (OR 4.0, 95% CI 1.7, 9.4). Other factors associated with dementia included incontinence, falls and poor mobility. The KICA is a valid assessment tool for rural and remote Indigenous Australians. The prevalence of dementia amongst Indigenous Australians is substantially higher than generally found in non - Indigenous Australians and other populations in the developed and developing world.

Text in Afrikaans / Hierdie studie ondersoek die moontlikheid dat aandagtekort versteuring met hiperaktiwiteit(ATHV/H) verband hou met probleme met voortgesette aandag, terwyl aandagtekort versteuring sander hiperaktiwiteit(ATHV/SO) verband hou met probleme met gefokusde aandag. Neurosielkundige toetse waarmee voortgesette- en gefokusde aandag gemeet word, word gebruik om drie groepe, naamlik ATHV/H(n=24), ATHV/SO(n=l5) en 'n kontrole groep(n=21), met mekaar te vergelyk. Resul tate dui daarop dat die groep ATHV/SO beduidend swakker presteer as die ander twee groepe op sommige van die toetse van gefokusde aandag, en ook neig om swakker te presteer op die toets van voortgesette aandag. Die groep ATHV/SO se probleme blyk gekoppel te wees aan 'n stadiger spoed van kognitiewe prosessering en 'n toestand van hipoopwekking. Die groep ATHV/H presteer nie beduidend swakker as die ander twee groepe op die toets van voortgesette aandag nie, maar presteer wel swakker as die kontrole groep op die Stroop Colour-Word Test waar inhibisie van ontoepaslike response vereis word. Die groep ATHV /H se probleme blyk verband te hou met frontale disfunksie wat manifesteer as 'n neighing tot impulsiwiteit en gebrekkige gedragsregulering. / This study examined the possibility that attention deficit disorder with hyperactivity(ADHD/H) is related to problems with sustained attention, while attention deficit disorder without hyperactivity (ADHD/WO) is related to problems with focussed attention. The performance of three groups: ADHD/H (n=24), ADHD/WO(n=15) and a control group(n=21) were compared. Results indicated that the ADHD/WO group performed significantly poorer than the other two groups on some of the tests of focussed attention and also tended to perform poorer on the test assessing sustained attention. This groups' symtoms appear to be related to a slowed speed of processing and a state of hypo-arousal. The ADHD/H group did not perform poorer than the other two groups on the test assessing sustained attention. The ADHD/H groups' symptoms appear to be related to frontal dysfunction resulting in impulsivity and poor behavioural control. / Psychology / M.A. (Sielkunde)

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less. Marie Curie Debates about how best to test people from different contexts and backgrounds continue to hold the spotlight of testing and assessment. In an effort to contribute to the debates, the purpose of the study was to develop and evaluate the viability and utility of nonverbal figural reasoning ability items that were developed based on inspirations from African cultural artefacts such as African material prints, art, decorations, beadwork, paintings, et cetera. The research was conducted in two phases, with phase 1 focused on the development of the new items, while phase 2 was used to evaluate the new items. The aims of the study were to develop items inspired by African art and cultural artefacts in order to measure general nonverbal figural reasoning ability; to evaluate the viability of the items in terms of their appropriateness in representing the African art and cultural artefacts, specifically to determine the face and content validity of the items from a cultural perspective; and to evaluate the utility of the items in terms of their psychometric properties. These elements were investigated using the exploratory sequential mixed method research design with quantitative embedded in phase 2. For sampling purposes, the sequential mixed method sampling design and non-probability sampling strategies were used, specifically the purposive and convenience sampling methods. The data collection methods that were used included interviews with a cultural expert and colour-blind person, open-ended questionnaires completed by school learners and test administration to a group of 946 participants undergoing a sponsored basic career-related training and guidance programme. Content analysis was used for the qualitative data while statistical analysis mainly based on the Rasch model was utilised for quantitative data. The results of phase 1 were positive and provided support for further development of the new items, and based on this feedback, 200 new items were developed. This final pool of items was then used for phase 2 – the evaluation of the new items. The v statistical analysis of the new items indicated acceptable psychometric properties of the general reasoning (“g” or fluid ability) construct. The item difficulty values (pvalues) for the new items were determined using classical test theory (CTT) analysis and ranged from 0.06 (most difficult item) to 0.91 (easiest item). Rasch analysis showed that the new items were unidimensional and that they were adequately targeted to the level of ability of the participants, although there were elements that would need to be improved. The reliability of the new items was determined using the Cronbach alpha reliability coefficient (α) and the person separation index (PSI), and both methods indicated similar indices of internal consistency (α = 0.97; PSI = 0.96). Gender-related differential item functioning (DIF) was investigated, and the majority of the new items did not indicate any significant differences between the gender groups. Construct validity was determined from the relationship between the new items and the Learning Potential Computerised Adaptive Test (LPCAT), which uses traditional item formats to measure fluid ability. The correlation results for the total score of the new items and the pre- and post-tests were 0.616 and 0.712 respectively. The new items were thus confirmed to be measuring fluid ability using nonverbal figural reasoning ability items. Overall, the results were satisfactory in indicating the viability and utility of the new items. The main limitation of the research was that because the sample was not representative of the South African population, there were limited for generalisation. This led to a further limitation, namely that it was not possible to conduct important analysis on DIF for various other subgroups. Further research has been recommended to build on this initiative. / Industrial and Organisational Psychology

Dans le contexte du diagnostic précoce de la maladie d’Alzheimer, une direction de la recherche émerge autour de l’informatisation de tests cognitifs. Nous avons conçu un test de barrage informatisé sur tablette (test e-CT), développé à partir d’un test de barrage papier-crayon. Nous avons étudié les variables influençant les performances au test e-CT et ses propriétés psychométriques. Nous avons observé que chez les sujets âgés sains, la seule variable influençant était l’âge. Les performances au test e-CT n’étaient pas influencées par l’expérience avec un appareil informatique. Cependant, chez les patients présentant des troubles cognitifs, ceux qui utilisaient quotidiennement un appareil informatique avaient une meilleure performance que ceux qui n’avaient pas un usage quotidien. En effet, les patients utilisant quotidiennement un appareil informatique présentaient de meilleures capacités cognitives. Le test e-CT était corrélé avec plusieurs tests des fonctions exécutives (validité convergente), mais pas avec le test de la mémoire épisodique (validité divergente). Il présente aussi une bonne fidélité test-retest. Le test e-CT présente des bonnes performances diagnostiques, permettant de différencier les personnes âgées saines des patients présentant des troubles cognitifs. En conclusion, le test e-CT présente des propriétés psychométriques satisfaisantes et peut être utilisé pour l’évaluation cognitive chez le sujet âgé. / In the context of early detection of cognitive impairment associated with dementia, an area of research focus concerns development and validation of computerized tests. We have developed a tablet-based cancellation test (e-CT), based on an existing paper-and-pencil cancellation test (K-T test). We studied the variables influencing performance on the e-CT and its psychometric properties. Among healthy older adults, only age was found to be an influencing variable. The performance on the e-CT was not influenced by experience with a computer-based device. However, for patients suffering from cognitive impairment, those using a computer-based device daily outperformed those who were not daily users. Further analyses showed that daily users conserved better cognitive capacities than non-daily users. The e-CT showed significant correlations with several measures of executive functions (convergent validity), but there was no relationship between the e-CT and the episodic memory test (divergent validity). It showed good test-retest reliability. The e-CT had good diagnostic accuracy in differentiating between healthy elderly subjects and patients with cognitive impairment. In conclusion, the e-CT test shows satisfying psychometric properties and is a promising tool for neuropsychological assessment in older adults

京都大学 / 0048 / 新制・課程博士 / 博士(医学) / 甲第21669号 / 医博第4475号 / 新制||医||1035(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 村井 俊哉, 教授 古川 壽亮, 教授 宮本 享 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM

Thèse de doctorat présenté en vue de l'obtention du doctorat en psychologie - recherche intervention, option neuropsychologie clinique (Ph.D) / Les jeux vidéo d’actions sont exigeants d’un point de vue cognitif, c’est notamment pourquoi ils sont considérés comme les plus susceptibles d’influencer la cognition (Spence & Feng, 2010). Plusieurs études indiquent que les joueurs de jeux vidéo d’action performent mieux que les non-joueurs sur plusieurs fonctions cognitives, telles que l’attention, la vitesse de traitement, mémoire à court terme et la mémoire de travail (Bediou et al., 2018; Dye et al., 2009; Green & Bavelier, 2006; Powers & Brooks, 2014). Néanmoins, notre compréhension du lien entre la pratique de jeux vidéo d’action et la cognition demeure incomplète. La caractérisation cognitive de l’expertise en jeu vidéo d’action est une avenue intéressante et peu explorée afin de contribuer à l’avancement des connaissances sur le lien entre la pratique de jeux vidéo et la cognition. Les joueurs professionnels de jeux vidéo sont des individus pouvant performer selon les plus hauts standards dans leur domaine, ce qui renvoie à la définition d’experts-élites (Reimann & Markauskaite, 2018). L’étude de l’expertise s’est illustrée comme étant un angle complémentaire permettant l’approfondissement des connaissances empiriques et théoriques. La présente thèse s’intéresse donc à la cognition des joueurs professionnels de jeux vidéo d’action en comparant leur profil neuropsychologique à celui d’un groupe de joueurs amateur. Dans le premier article, les groupes sont comparés sur plusieurs mesures neuropsychologiques. Les joueurs professionnels se sont distingués sur les mesures du fonctionnement attentionnel, de la mémoire à court terme visuelle, de la mémoire de travail, de la vitesse de traitement et sur le plan des capacités perceptivo-cognitives. Le second article approfondit la caractérisation attentionnelle des joueurs en évaluant la résolution temporelle de l’attention et l’attention divisée via une tâche attentionnelle impliquant la poursuite d’une ou trois cibles dans une trajectoire circulaire. Les joueurs professionnels se sont démarqués des amateurs pour chacune des tâches et le coût de l’augmentation de la difficulté sur la performance est significativement moindre pour les professionnels en comparaison aux amateurs, suggérant un avantage significatif sur le plan de l’attention divisée. Les résultats présentés dans le cadre de cette thèse mettent en lumière le profil cognitif distinctif des joueurs professionnels en jeux vidéo d’action qui semble s’articuler à l’entour d’un contrôle attentionnel supérieur. Ainsi, l’identification de différences entre les joueurs professionnels et amateurs démontre l’hétérogénéité parmi l’ensemble des joueurs de jeux vidéo, ce qui a des implications méthodologiques dans la constitution des groupes pour les recherches futures. D’autre part, l’identification du contrôle attentionnel comme étant un marqueur de l’expertise en jeux vidéo est susceptible d’orienter les recherches futures et de contribuer à l’approfondissement théorique et empirique du lien entre la pratique de jeux vidéo et la cognition. / Several studies indicate that action video game players perform better than non-gamers on a variety of cognitive functions, such as attention, processing speed, short-term memory, and working memory (Bediou et al., 2018; Dye et al., 2009; Green & Bavelier, 2006; Powers & Brooks, 2014). Nevertheless, our understanding of the link between action video gaming and cognition remains incomplete. The characterization of expertise and elite performance is an interesting yet understudied avenue that could help deepen the understanding of the relationship between video game experience and cognition. Professional video game players can be considered as experts-elites in their discipline as they can perform at the highest standards (Reimann & Markauskaite, 2018). In many other fields, the study of expertise has been shown to be a complementary angle to advance empirical and theoretical knowledge. The present thesis investigates the cognition of professional action video game players by comparing their neuropsychological profile to a group of amateur players. In the first paper, several neuropsychological measures are used to compare the two groups of players. Professional gamers had greater performances on measures of attentional function, visual short-term memory, working memory, processing speed, and perceptual-cognitive abilities when compared to amateurs. The second article further characterizes the players' attentional function by assessing temporal resolution of attention and divided attention via an attentional tracking task that requires them to follow one or three targets at various speeds. Professional players outperformed amateurs on both tasks and the impact of increasing difficulty on performance was significantly lower for professionals than for amateurs, suggesting a significant advantage in divided attention. Results presented in this thesis highlight the distinctive cognitive profile of professional action video game players, which appears to be articulated around superior attentional control. Thus, the identification of differences between professional and amateur gamers demonstrates the heterogeneity among video game players, which has methodological implications for groups formation for future research. Furthermore, the identification of attentional control as a marker of video game expertise is likely to guide future research and contribute to the theoretical and empirical investigation of the link between video gaming and cognition.

No description available.

Revue systématique / La maladie d'Alzheimer (MA) est fréquente chez les personnes avec un syndrome de Down (SD). Cependant, détecter les premiers signes de la maladie est difficile en raison de la déficience intellectuelle (DI), du vieillissement cognitif précoce et de la prévalence élevée de problèmes de santé pouvant affecter la cognition. La MA est souvent diagnostiquée seulement au stade de la démence. L'un des défis est de déterminer si les troubles cognitifs sont liés à la DI ou à un déclin par rapport à un état antérieur. Pour surmonter ce problème, différents instruments d'évaluation sont utilisés, mais ils manquent de sensibilité et de spécificité et les premiers stades de cette maladie posent un défi. L'objectif de cette étude était de passer en revue de manière systématique les instruments permettant de détecter les premiers symptômes de la maladie d’Alzheimer chez les personnes avec un SD. Nous avons utilisé la méthodologie PRISMA pour identifier les articles publiés en anglais avant décembre 2022 dans quatre bases des données: PsycInfo, MEDLINE, Health and Psychosocial Instruments et Embase. Au total, 1 325 articles ont été identifiés, dont 75 pertinents après une sélection minutieuse. Ils portaient sur 40 instruments d'évaluation, tels que des questionnaires, des tests cognitifs et des batteries. Les données provenaient de 17 pays, principalement d'Europe et d'Amérique du Nord, avec 10 021 participants avec une déficience intellectuelle. Parmi eux, 6 708 avaient un syndrome de Down, et les études étaient principalement en anglais. Certains questionnaires/échelles, comme le Dementia Screening Questionnaire for Individuals with Intellectual Disabilities, l’Informant Questionnaire on Cognitive Decline in the Elderly et le Dementia Questionnaire for People with Learning Disabilities, des tests cognitifs tels que le Cued Recall Test, Picture Memory Impairment Screen for People with Intellectual Disability et le Down Syndrome Mental Status Examination, et la batterie National Task Group-Early Detection Screen for Dementia , sont recommandés pour la détection des premiers symptômes de la maladie d’Alzheimer chez les personnes avec un syndrome de Down. Pour une évaluation plus complète, le Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and Others with Intellectual Disabilities est recommandé. / Alzheimer's Disease (AD) is prevalent in individuals with Down Syndrome (DS). However, detecting early signs of the disease is challenging due to intellectual disability (ID), early cognitive aging, and a high prevalence of health issues that can impact cognition. AD is often diagnosed only at the dementia stage. One challenge is determining whether cognitive impairments are linked to ID or a decline from a previous state. To address this issue, various assessment tools are utilized, but their lack of sensitivity and specificity for early stages of AD presents a challenge. The objective of this study was to systematically review instruments for detecting early symptoms of AD in individuals with DS. We employed the PRISMA methodology to identify articles published in English before December 2022 in four databases: PsycInfo, MEDLINE, Health and Psychosocial Instruments, and Embase. A total of 1,325 articles were identified, with 75 deemed relevant after careful selection. They covered 40 assessment instruments, including questionnaires, cognitive tests, and test batteries. Data were sourced from 17 countries, primarily in Europe and North America, involving 10,021 participants with intellectual disabilities. Among them, 6,708 had DS, and the studies were predominantly in English. Some questionnaires/scales such as Screening Questionnaire for Individuals with Intellectual Disabilities, Informant Questionnaire on Cognitive Decline in the Elderly, and Dementia Questionnaire for People with Learning Disabilities, cognitive tests like Cued Recall Test, Picture Memory Impairment Screen for People with Intellectual Disability, and Down Syndrome Mental Status Examination, as well as the National Task Group-Early Detection Screen for Dementia battery, are recommended for detecting early symptoms of AD in individuals with DS. For a more comprehensive assessment, Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and Others with Intellectual Disabilities are recommended.