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Article

An extra X or Y chromosome: contrasting the cognitive and motor phenotypes in childhood in boys with 47,XYY syndrome or 47,XXY Klinefelter syndrome.

Developmental disabilities research reviews - 1 Jan 2009

Ross Judith L, Zeger Martha P D, Kushner Harvey, Zinn Andrew R, Roeltgen David P

Abstract excerpt

OBJECTIVE: The goal of this study was to contrast the cognitive phenotypes in boys with 47,XYY (XYY) karyotype and boys with 47,XXY karyotype [Klinefelter syndrome, (KS)], who share an extra copy of the X-Y pseudoautosomal region but differ in their dosage of strictly sex-linked genes. METHODS: Neuropsychological evaluation of general cognitive ability, language, memory, attention, visual-spatial abilities,...

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Source

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Identifiers

PMID: 20014371
DOI: 10.1002/ddrr.85
PMCID: PMC2876236

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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