An epidemiological study of number processing and mental calculation in Greek schoolchildren.
The aim of this study was to validate and standardize an instrument for the diagnosis of developmental dyscalculia (mathematics disorder) in a Greek population and to obtain relevant epidemiological data. We used the Neuropsychological Test Battery for Number Processing and Calculation in Children (NUCALC) in a community sample of 240 students ages 7 to 11 years from urban and rural schools. There were no differences between genders in arithmetical performance; however, the effects of grade and socioeconomic level were significant. Prevalence was higher in the rural than in the urban area. A cross-cultural comparison of the Greek data with those obtained with the same instrument in other countries in schoolchildren of the same age was performed.
First Department, Child Psychiatric Hospital of Attica, Athens, Greece.
Anastasia
A
Koumoula
Vanda
V
Tsironi
Victoria
V
Stamouli
Irini
I
Bardani
Stavroula
S
Siapati
Graham
G
Annika
Ignatios
I
Kafantaris
Irini
I
Charalambidou
Georges
G
Dellatolas
Michael
M
von Aster
D000367:Age Factors; D002648:Child; D003431:Cross-Cultural Comparison; D003430:Cross-Sectional Studies; D005260:Female; D006115:Greece; D006801:Humans; D007859:Learning Disabilities / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D008433:Mathematics; D009483:Neuropsychological Tests / Q000706:statistics & numerical data; D011340:Problem Solving; D011594:Psychometrics / Q000706:statistics & numerical data; D012424:Rural Population / Q000706:statistics & numerical data; D012737:Sex Factors; D014505:Urban Population / Q000706:statistics & numerical data