作者: Clive Lewis , Graham J. Hitch , Peter Walker
DOI: 10.1111/J.1469-7610.1994.TB01162.X
关键词:
摘要: Data from an epidemiological sample (n= 1206) of British schoolchildren were used to estimate the proportions of 9‐ to 10‐year‐olds with specific arithmetic difficulties (SAD), combined …