Abstractband zum 16. Kongress des Bundesverbandes Legasthenie

Abstractband 16. Kongress des Bundesverbandes Legasthenie
Dieses Kooperationsprojekt eines überbetrieblichen Ausbildungsträgers mit einer auf
Rechenschwäche spezialisierten Einrichtung und die Integration einer qualifizierten Dyskalkulietherapie
in die überbetriebliche Berufsausbildung sind bundesweit einmalig.
Korrespondenzautor:
Jörg Kwapis
j.kwapis@finixarts.de
0331 5507767
0331 2016705
Development of basic number skills
Karin Landerl
Universität Tübingen, Tübingen, Deutschland
Deficits in basic numerical processing have been identified as a central and probably
causal problem in developmental dyscalculia, however, so far not much is known about
the typical and atypical development of such skills. A study will be presented which
assessed basic number skills cross-sectionally, in 268 typically developing and 132 dyscalculic
children in Grades 2, 3 and 4. Findings indicate that the efficiency of processing
of numbers and numerosities improves over time and that dyscalculic children are generally
less efficient than children with typical development. Robust effects of numerical
distance, size congruity and compatibility of ten and unit digits in two-digit numbers could
be identified as early as end of Grade 2. Only the distance effect for comparing symbolic
representations of numerosities changed developmentally. Furthermore, dyscalculic
children in Grade 2 showed an especially strong effect of compatibility when comparing
two-digit numbers. Apart from that, the patterns of numerical processing were stable
across grade and arithmetic levels. We did not find strong evidence that dyscalculic
children process numbers qualitatively differently from children with typical arithmetic development.
These findings seem to indicate that the cognitive representation of number
may be intact in dyscalculia and that access and processing these representations may
be the problem rather than representation in itself.
Korrespondenzautor:
Karin Landerl
karin.landerl@uni-tuebingen.de
07071 29 75306
07071 552413
76