Development of Intelligence of Infants With Mongolism1

Dameron, Lawrence E.

doi:10.1111/j.1467-8624.1963.tb05961.x

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…However, the majority of these studies have focused on young children with DS. These studies reveal evidence for an early rapid decline in standard scores with age during infancy (Carr, 1970; Dameron, 1963; Dicks-Mireaux, 1972; Piper & Pless, 1980) and early childhood (Carr, 1988; Share et al, 1964), and on a variety of standardized tests (i.e., Bayley Scales of Infant Development [Bayley, 1969], California First Year [Bayley, 1933], Griffiths Mental Scales [Griffiths, 1954, 1970], Gesell Developmental Scales [Gesell & Amatruda, 1941]). A reasonable explanation for this early rapid decline is that during the first two to three years of life, typically developing infants demonstrate a surge in cognitive development (Lamb, Bornstein, & Teti, 2002); as this surge occurs, the differences between typically developing children and those with DS, who are acquiring new skills more slowly, become more pronounced, resulting in an increasing lag in standard scores for young children with DS.…”

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confidence: 86%

Patterns of change in nonverbal cognition in adolescents with Down syndrome

Channell¹,

Thurman²,

Kover³

et al. 2014

Research in Developmental Disabilities

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This study was designed to examine longitudinal change in nonverbal cognitive abilities across adolescence for 20 males with Down syndrome (DS). We used hierarchical linear modeling to examine the rate of change in performance on the subtests of the Leiter-R Brief IQ across four annual time points and to determine the relation between maternal IQ and level and rate of change in performance. Results indicated no significant change in IQ (standard scores) with age in the sample, suggesting IQ stability during adolescence for individuals with DS, although several participants performed at floor level on the standard scores for the Leiter-R, limiting interpretation. Growth scores, however, provide a metric of absolute ability level, allow for the examination of change in Leiter-R performance in all participants, and minimize floor effects. Results from the analysis of growth scores indicated significant gain in absolute nonverbal cognitive ability levels (growth score values) over time for the adolescents with DS, although the growth varied by subdomain. Maternal IQ did not explain variability in cognitive performance or change in that performance over time in our sample of adolescents with DS.

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mentioning

confidence: 86%

Patterns of change in nonverbal cognition in adolescents with Down syndrome

Channell¹,

Thurman²,

Kover³

et al. 2014

Research in Developmental Disabilities

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Longitudinal Research in Down Syndrome

Carr

1992

International Review of Research in Mental Retardation

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The Developmentalist and the Study of Biological Risk: A View of the Past with an Eye toward the Future

Kopp¹,

Krakow²

1983

Child Development

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This paper has 2 goals: to review the history of the developmental study of infants and children at biological risk and to appraise the current state of the art. The scope of the review is from 1920 to the present and emphasizes the role of developmentalists. 4 research phases are identified, each reflecting aspects of the social, political, health, and psychological zeitgeist. First, from 1920 to World War II, research was primarily "catalog" and had diverse themes; however, several issues were raised that continue to have relevance. Second, during the postwar years, research often focused on the cognitive and emotional residuals of handicaps, particularly cerebral palsy and poliomyelitis. Third, the 1960s marked the funding of major seminal longitudinal investigations of perinatal risk factors, and studies of very young infants "at risk." And fourth, in the last and current period, technological advances of the 1970s first applied to research with normally developing children were then extended to at-risk groups and revolutionized the methods of studying risk. Finally, we suggest that, although a considerable amount of information has been obtained about developmental phenomena subsequent to biological risk, our research literature is fragmented and difficult to synthesize. We conclude by offering strategies to foster research and the integration of knowledge.

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Development of Intelligence of Infants With Mongolism1

Cited by 4 publications

References 9 publications

Patterns of change in nonverbal cognition in adolescents with Down syndrome

Patterns of change in nonverbal cognition in adolescents with Down syndrome

Longitudinal Research in Down Syndrome

The Developmentalist and the Study of Biological Risk: A View of the Past with an Eye toward the Future

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