In the present study we examined whether children with Developmental Dyscalculia (DD) exhibit a deficit in the so-called "Approximate Number System" (ANS). To do so, we examined a group of elementary school children who demonstrated persistent low math achievement over 4 years and compared them to typically developing (TD), aged-matched…

Many practitioners and state education agency staff would likely agree that the accuracy and consistency of specific learning disability (SLD) eligibility decisions is in need of improvement. One component of the SLD definition particularly controversial in the identification procedures is the evaluation of cognitive processes, primarily due to a…

The purpose of the study was to investigate the metacognitive abilities of students with LD as they engage in math problem solving and to determine processing differences between these students and their low- and average-achieving peers (n = 73). Students thought out loud as they solved three math problems of increasing difficulty. Protocols were…

When you think ADHD, do you think boy? You're not alone. Boys are three times more likely to be diagnosed with ADHD, even though they're no more likely to have it. Too many young girls are not getting the help they need. That's why teachers are so important. When it comes to learning disabilities, teachers are right there on the front line.…

Questions the validity of current reductionist assumptions concerning learning differences and proposes a new science of life based on dynamic, transforming, hierarchically organized systems of energy. This view of cognition is related to Piaget's insights, which are extended to include a view of learning differences consistent with these…

Investigated digit repetition performance in learning-disabled children in an effort to assess its clinical and theoretical significance. Clincally, learning-disabled children (N=100) had a higher than expected incidence of large verbal-performance discrepancies, although mean overall digit repetition performance did not differ appreciably from…

This study, with 19 fifth graders having learning disabilities (LD) and 20 fifth graders without LD, examined cognitive and motivational variables. Although some differences between groups were found, differences in the motivational and cognitive variables generally cut across a priori categories of children with and without LD, forming three…

Three experiments involving 85 learning-disabled (LD) children and 101 non-LD children investigated whether memory difficulties of LD children may be attributable in part to executive processing. Results suggest that LD readers may suffer from executive processing deficiencies, although they do not rule out effects of language-specific processes.…

A longitudinal study was conducted on 82 children to investigate, firstly the numerical competence of young children and the predictive value of (pre)-numerical tests in kindergarten, and, secondly, whether children's knowledge of the numerical system and representation of the number size is related to their computation and logical knowledge and…

Attention acts as the mind's "gatekeeper" by regulating and prioritizing the stimuli processed by the central nervous system. It is essential for cognitive performance, memory, and behavior, and we know that even slight deficiencies in attention compromise learning. Basic neuroscience research further indicates that attention consists of (fairly)…

Individual differences in digit span, susceptibility to proactive interference, and various aptitude/achievement test scores were investigated in two experiments with college students. Results indicated that digit span was strongly correlated with aptitude/achievement scores, but did not indicate that susceptibility to proactive interference…

Examined potential central processing strategy differences among subgroups of children on a series of elaborative encoding tasks. Children in lower verbal and learning ability subgroups differed from those in higher ability groups in how they shared, discriminated, and selectively allocated resources between recall tasks. (RH)

The time may be ripe for the fields of mathematics education, special education, and cognitive psychology to converge, with their respective focuses on mathematical problem solving, individual differences among students, and analysis of cognitive processes. Four articles on learning disabilities in mathematics are introduced, and a research agenda…

Mental retardation, learning disabilities, and intellectual giftedness have long been separated as different fields. In the past decade research findings suggested a continuity within the general intelligence spectrum which place the gifted on one extreme and the retarded on the other, as well as a two dimensional taxonomy of intellectual…