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Palomares, Melanie; Englund, Julia A.; Ahlers, Stephanie – Research in Developmental Disabilities: A Multidisciplinary Journal, 2011
Williams Syndrome (WS) is a developmental disorder typified by deficits in visuospatial cognition. To understand the nature of this deficit, we characterized how people with WS perceive visual orientation, a fundamental ability related to object identification. We compared WS participants to typically developing children (3-6 years of age) and…
Descriptors: Mental Age, Mental Retardation, Genetic Disorders, Developmental Disabilities
Lifshitz, Heftziba; Katz, Yaacov J. – European Journal of Special Needs Education, 2009
This study compared behavioural, cognitive, and motivational components of religiosity among 54 Jewish adolescents (aged 13-21 years) and 35 adults (aged 30-60 years) with intellectual disability (ID) (IQ=40-69). A special questionnaire was constructed based on several previous studies by other authors. A different pattern was found between age…
Descriptors: Jews, Mental Retardation, Older Adults, Adolescents
Murfett, Romana; Powell, Martine B.; Snow, Pamela C. – Journal of Intellectual & Developmental Disability, 2008
Background: This study examined the ability of 78 children (aged 9-12 years) with an intellectual disability (ID) to provide a narrative account of a staged event they had participated in four days earlier. Method: The children were interviewed using open-ended questions. The quality of their responses (using a story grammar framework) was…
Descriptors: Control Groups, Story Grammar, Mental Age, Mental Retardation

Cole, Peter G.; Barrett, Sonya – Journal of Intellectual and Developmental Disability, 1997
An Australian comparison study of 26 children (mean age=10) with mild intellectual disabilities, 26 typical children of approximately the same mental age, and 26 children of approximately the same chronological age, found no mean differences on problem-solving abilities between the children with intellectual disabilities and children of comparable…
Descriptors: Child Development, Children, Cognitive Ability, Cognitive Development