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Zemach, Moran; Vakil, Eli; Lifshitz, Hefziba – Journal of Applied Research in Intellectual Disabilities, 2023
Background: Life expectancy is on rise and the intriguing question is: When does cognitive decline occur among adults with intellectual disability, compared to adults with typical development? This cross-sectional study examined cognitive performance of crystallised/fluid intelligence, working and long-term memory of adults with intellectual…
Descriptors: Adults, Intellectual Disability, Intelligence Tests, Verbal Learning
Lifshit, Hefziba Batya; Bustan, Noa; Shnitzer-Meirovich, Shlomit – Journal of Applied Research in Intellectual Disabilities, 2021
Goals: This study examined: (a) crystallized/fluid intelligence trajectories of adolescents and adults with Down syndrome; and (b) the contribution of endogenous (health, activities of daily living--ADL) and exogenous (cognitively stimulating leisure activities) factors on adults' intelligence with age. Method: Four cohorts (N = 80) with Down…
Descriptors: Down Syndrome, Adolescents, Adults, Health Behavior
van Esch, Ankie Yvonne Maria; de Vries, Jolanda; Masthoff, Erik David Marco – Journal of Applied Research in Intellectual Disabilities, 2020
Introduction: Intellectual disability is a key subject in all mental healthcare institutions, including the forensic mental health services. The Screener for Intelligence and Learning Disability (SCIL) is designed to screen for intellectual disability in forensic populations. So far, this assessment method is only validated in "detention fit…
Descriptors: Foreign Countries, Screening Tests, Disability Identification, Intellectual Disability
Seelen-de Lang, Birgit L.; Smits, Hedwig J. H.; Penterman, Berry J. M.; Noorthoorn, Eric O.; Nieuwenhuis, Jeanet G.; Nijman, Henk L. I. – Journal of Applied Research in Intellectual Disabilities, 2019
Background: The reliability and validity of the Screener for Intelligence and Learning Disabilities (SCIL) are unknown in a population of outpatients with severe mental illness. The prevalence of mild or borderline intellectual disabilities (MBID); an umbrella term for people with borderline intellectual functioning (BIF) and mild intellectual…
Descriptors: Screening Tests, Disability Identification, Intelligence Tests, Severe Disabilities
Stirk, Steven; Field, Bryony; Black, Jessica – Journal of Applied Research in Intellectual Disabilities, 2018
Background: The Learning Disability Screening Questionnaire (LDSQ) has been shown to have high sensitivity and specificity to identify those who are likely to meet intellectual disability diagnostic criteria (McKenzie, et al. [McKenzie K., 2015]). However, there is no independent research to date to support these findings. Materials and Methods:…
Descriptors: Learning Disabilities, Questionnaires, Screening Tests, Diagnostic Tests
Habets, Petra; Jeandarme, Inge; Uzieblo, Kasia; Oei, Karel; Bogaerts, Stefan – Journal of Applied Research in Intellectual Disabilities, 2015
Background: A stable assessment of cognition is of paramount importance for forensic psychiatric patients (FPP). The purpose of this study was to compare repeated measures of IQ scores in FPPs with and without intellectual disability. Methods: Repeated measurements of IQ scores in FPPs (n = 176) were collected. Differences between tests were…
Descriptors: Mental Retardation, Cognitive Ability, Intelligence, Intelligence Tests
Carr, Janet; Collins, Suzanne – Journal of Applied Research in Intellectual Disabilities, 2018
Background: A population sample of people with Down syndrome, studied from infancy, has now been followed up at the age of 50 years. From the original sample of 54, there were 27 still in the study at the age of 50, all but four of the losses resulting from deaths. Methods: Intelligence and language skills were tested and daily living skills…
Descriptors: Down Syndrome, Longitudinal Studies, Dementia, Aging (Individuals)
Carr, Janet; Collins, Suzanne – Journal of Applied Research in Intellectual Disabilities, 2014
Background: A population sample of people with Down syndrome has been studied from infancy and has now been followed up again at age 47 years. Methods: Intelligence and language skills were tested and daily living skills assessed. Memory/cognitive deterioration was examined using two test instruments. Results: Scores on verbal tests of…
Descriptors: Aging (Individuals), Dementia, Longitudinal Studies, Down Syndrome
Carr, Janet – Journal of Applied Research in Intellectual Disabilities, 2012
Background: A population sample of people with Down Syndrome, repeatedly studied since infancy, has now been followed up at the age of 45 years. The paper is intended to give an overview of their abilities, as represented by the results of psychological tests, over their life span to date. Methods: As at all previous occasions from age 30 onwards,…
Descriptors: Dementia, Down Syndrome, Memory, Academic Ability
Whitaker, Simon; Wood, Christopher – Journal of Applied Research in Intellectual Disabilities, 2008
Objective: It has been suggested that, as the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) and the Wechsler Intelligence Scale for Children-Third Edition (WISC-III) give a scaled score of one even if a client scores a raw score of zero, these assessments may have a hidden floor effect at low IQ levels. The study looked for…
Descriptors: Intelligence Tests, Intelligence Quotient, Measures (Individuals), Raw Scores
Gordon, Shirley; Duff, Simon; Davidson, Terry; Whitaker, Simon – Journal of Applied Research in Intellectual Disabilities, 2010
Background: Previous research with earlier versions of the WISC and WAIS has demonstrated that when administered to people who have intellectual disabilities, the WAIS produced higher IQ scores than the WISC. The aim of this study was to examine whether these differences still exist. A comparison of the Wechsler Adult Intelligence Scale-Third…
Descriptors: Intelligence, Mental Retardation, Psychologists, Intelligence Quotient
Fitzgerald, Suzanne; Gray, Nicola S.; Snowden, Robert J. – Journal of Applied Research in Intellectual Disabilities, 2007
Background: Whether the Flynn effect (the increase in the populations' IQ over time) affects the IQ scores of people with learning disability or borderline learning disability remains unclear. The issue is important as the Flynn effect should alter the number of people eligible for health service resources. A comparison of the Wechsler Adult…
Descriptors: Health Services, Intelligence Tests, Learning Disabilities, Intelligence Quotient
Hayes, Susan – Journal of Applied Research in Intellectual Disabilities, 2009
Background: Childhood sexual and physical abuse has been related to subsequent offending behaviour in non-disabled individuals as well as people with intellectual disabilities, but there is a dearth of research examining the link between these two characteristics and psychological, behavioural and psychiatric symptoms amongst sex offenders with…
Descriptors: Family Violence, Sexual Abuse, Mental Retardation, Posttraumatic Stress Disorder