Abstract
This study examined what basic counting competencies, difficulties, skill progressions, and variation could be expected in school children classified as mentally handicapped. A total of 13 elementary and 23 intermediate children classified as moderately mentally handicapped and 37 elementary and 27 intermediate children classified as mildly mentally handicapped were individually administered structured interviews. Quantitative and qualitative analyses indicated deficiencies in basic counting competencies and systematic oral- and object-counting errors. Moreover, object-counting competence preceded automatic pattern recognition. Finally, there were striking individual differences in ability, even within “homogeneous” groups of children. Basic counting knowledge, which is acquired by most typical children before formal schooling, cannot be taken for granted in mentally handicapped children of school age. Error analyses provide clues to oral- and object-counting difficulties and direction for remedial efforts. Accurate and ample object-counting experience is essential for the development of more advanced skills, such as automatic pattern recognition. Instructional planning should be based on diagnoses of specific strengths and weaknesses, not generic labels.
Get full access to this article
View all access options for this article.
