A neurological model of sensory-motor problem solving with possible implications for higher-order cognition and instruction

Grossberg's neural modeling principles of learning, perception, cognition, and motor control are presented as the basis for construction of a neurological model of sensory-motor problem solving. The pattern of problem solving is assumed to be universal, thus is sought in the higher-order shift from the child's use of an additive strategy to the adolescent's use of a proportions strategy to solve the Pouring Water Task (Suarez and Rhonheimer, 1974). Possible neurological principles involved in this shift and in the process of psychological equilibration are discussed as are possible educational implications.     

Long‐term effects of a psycholinguistic treatment for dyslexia

Short and long‐term effects of a treatment for dyslexia are evaluated. The treatment is based on psycholinguistic theory and assumes that dyslexia is due to poor lexico‐phonological processing of words. The treatment is computer‐based and focuses on learning to recognise and to make use of the phonological and morphological structure of Dutch words. The results of the treatment were clear improvements in reading words, reading text and spelling. Effect sizes of standardised treatment gains were large (Cohen's d>0.80 for all variables). Following the treatment, participants attained an average level of text‐reading and spelling. The attained level of reading words and reading text was found to be stable over a four‐year follow‐up period. Spelling showed a slight decline one year after the treatment, but remained stable thereafter. ¹ 1. A preliminary report of the data was presented at the World congress on dyslexia, September 1997, Thessaloniki, Greece.     

The internal restlessness scale: performance of college students with and without ADHD

Attention-deficit/hyperactivity disorder (ADHD) was previously believed to be a disorder of childhood, with symptoms attenuating at the onset of puberty. Follow-up studies, however, suggest that the majority of children with ADHD continue to manifest symptoms into adulthood. Although the inattention components associated with ADHD persist into adulthood, the nature of the hyperactivity component is less well understood. For example, according to criteria established by the Diagnostic and Statistical Manual of Mental Disorders, fourth edition, hyperactivity in adolescents and adults may be limited to subjective feelings of restlessness. Recent studies with adults with ADHD have also reported that mental restlessness is commonly reported by individuals with the disorder. To better understand this characteristic of ADHD, the Internal Restlessness Scale (IRS) was developed. The results of the IRS suggest that (a) college students with ADHD report significantly higher ratings of internal restlessness than college students without ADHD, and (b) the IRS appears to have adequate test-retest reliability and a four-factor structure. Implications and suggestions for future research are discussed.     

Reliability of information on the Internet: Some distinctions

In this contribution, we identify and clarifysome distinctions we believe are useful inestablishing the reliability of information onthe Internet. We begin by examining some of thesalient features of information that go intothe determination of reliability. In so doing,we argue that we need to distinguish contentand pedigree criteria of reliability and thatwe need to separate issues of reliability ofinformation from the issues of theaccessibility and the usability of information.We then turn to an analysis of some commonfailures to recognize reliability orunreliability.     

Managing and leveraging knowledge for organisational advantage

This paper focuses on two elements of process knowledge that we call sticky and fluid knowledge. Process knowledge, we argue, differs from the more commonly described tacit or explicit knowledge due to its domain specificity. Process knowledge is a potential source of competitive advantage for an organisation and is key to the development of intellectual capital for an organisation. Knowledge management is the operational means of delivering this intellectual capital value. From empirical research conducted, two cases are presented that illustrate process knowledge and its value and exploitation for the development of intellectual capital. The findings emphasise the necessity for a multiplicity of means for process knowledge transfer in order to ensure the widest possible distribution. In particular, in order to ensure that sticky process knowledge is transformed into fluid process knowledge, it is recommended that, communities and face2face discussions supplement knowledge exchanges via electronic networks.     

Conditional logic abilities on the four-card problem: Assessment of behavioral and reasoning performances

The present study assessed the behavioral and the reasoning performances of 507 school and university students on the four logical principles of logical detachment, particular conversion, particular inversion, and particular contraposition. An adapted version of Wason's four-card problem was administered to all students in paper-and-pencil format and in group settings. Students were asked to respond to the logical questions and to justify their answers. Nine logical reasoning categories were identified. The results of behavioral and reasoning performances were compared across grade levels. Results indicated that many students who responded behaviorally correctly to the logical questions, provided incorrect reasoning justifications. The percentages of students who considered a conditional statement as hypothetical increased with age. No sex differences on the behavioral and the reasoning performances were reported.     

Predicting science achievement: The role of developmental level,disembedding ability,mental capacity,prior knowledge,and beliefs

Controversy in the literature exists concerning the relative importance of cognitive characteristics such as general developmental level and specific prior knowledge for science achievement. Thus the relative ability of developmental level and prior knowledge to predict achievement of concepts of evolution and natural selection was assessed by means by three commonly used types of examination items: multiple choice items, a computational item, and an essay item. The effects of students' disembedding ability, mental capacity, and belief in evolution were also assessed. Disembedding ability, prior knowledge, and belief in evolution were found to be significantly related to overall achievement, while developmental level and mental capacity were not. However, developmental level was found to be the best predictor of performance on the computational item while belief in evolution and prior knowledge were found to be the best predictors of performance on the multiple-choice items. Mental capacity was found to be a predictor of performance on the essay item. It is argued that the cognitive variables influence different aspects of science achievement. Implications are discussed.     

Physical Activity Performance of Focal Middle School Students

Histograms of push-ups and curl-ups from a sample of more than 9,000 students show periodic spikes at five and 10 unit intervals. This article argues that these spikes are related to focal points, a game theoretic concept popularized by Nobel Laureate Thomas Schelling. Being focal on one test makes one more likely to be focal on the other. Focal students (whose push-up score is a multiple of 5 and whose curl-up score is a multiple of 10) behave differently from their non-focal peers. They are more likely athletic, older, and male. Focal students, on average, did 2.2 more push-ups, 1.7 more curl-ups, and ran the mile 15 seconds faster than non-focal students, even controlling for these covariates of performance. By contrast, being focal on a single activity did not produce a statistically significant mile time difference. Students who systematically stop at focal outcomes appear differentially motivated toward physical activity performance.     

Modeling presentations: toward an assessment of emerging classroom cultures of modeling

Educational Studies in Mathematics - Though there is an extensive research literature on understanding and assessing individual modeling competencies, less attention has been given to...