The principle of "inversion," that a + b - b "must" equal a, is a fundamental property of arithmetic, but many children fail to apply it in symbolic contexts through 10 years of age. We explore three hypotheses relating to the use of inversion that stem from a model proposed by Siegler and Araya (2005). Hypothesis 1 is that…

The objectives of this study were to (1) evaluate group differences in specific arithmetic competencies among students with various types of learning difficulties (LD) and (2) to examine the influence of attention behaviors on possible group differences. Participants were a community sample of 291 third- and fourth-grade students with reading…

This study presents a psycho-educational intervention using cognitive-behavioral techniques to modify and improve thinking strategies as well as facilitate behavioral adjustment and generalization of strategy use in children with learning disabilities attending mainstream schools. One hundred and twenty Greek pupils in 2nd, 3rd, and 4th grade were…