The role of play in a differentiated curriculum for the young gifted child

Play should be an integral part of a curriculum designed for young gifted children.     

On exploiting propagation delays for passive target localization using bearings-only measurements

For many cases, target localization accuracy can significantly improve by accounting for the propagation delay between the target source and the sensors. This paper considers when it is advantageous to compensate for the propagation delay for the case of a network of nodes where each node consists of an array of sensors. Each node calculates a direction of arrival (DOA) from the raw data, and these DOAs are combined to localize the target. First, we consider the case when no prior data are given and the localization occurs using DOA measurements from a single snapshot. Such localization methods are necessary to initiate a target track. Finally, we investigate the case where an extended Kalman filter is used to aggregate measurements over multiple snapshots.     

Predictive validity of the WPPSI-R: A four year follow-up study

Wechsler Preschool and Primary Scale of Intelligence-Revised (WPPSI-R) scores obtained prior to enrollment in kindergarten are used to predict academic achievement scores on the Comprehensive Testing Program III at the end of grades 1, 2, and 3. Correlations between achievement and Verbal IQ are significant at all three grade levels, with measures of vocabulary, general knowledge, and verbal concept formation (Similarities) being the most consistent verbal predictors of academic achievement. Performance IQ is a poor predictor of academic achievement, with only 3 out of 16 correlations with achievement reaching significance. The Full Scale IQ's correlations with achievement appear to be due to the contributions of the verbal scale. Results are discussed in terms of their generalizability for this middle- and upper-middle-class sample engaged in a demanding academically-oriented curriculum.     

Stabilized generation of precise triangular waves,square waves and trapezoidal waves in three phases

A new three-dimensional compact oscillator model for generating three phases of triangular waves and square waves (and also trapezoidal waves) is developed by considering carefully a recently suggested model for the precise quadrature generation of similar waves in two phases. The properties of the solution of the new model equations are investigated and they suggest that the oscillator should possess applications for the design of relatively simple electronic three phase triangular and square wave generators. “Software” applications of the model and its employment for power systems simulations are also discussed briefly.     

Children's Understanding of the Meaning and Functions of Verbal Irony

We investigated children's understanding of irony and sensitivity to irony's meanness and humor. In Study 1, 89 participants (5–6-year-olds, 8–9-year-olds, adults) heard ironic and literal criticisms, and literal compliments. Comprehension of irony emerged between 5 and 6 years of age. Ratings of humor increased with age; ratings of meanness did not (showing that all ages perceived irony as more muted than literal criticism). In Study 2, results from 135 participants (6–7-year-olds, 8–9-year-olds, and adults) replicated these findings and revealed the role of form and intonation. Thus, comprehension of irony emerges between 5 and 6 years of age, and sensitivity to the muting function develops prior to sensitivity to the humor function.     

Lexical ambiguity: making a case against spread

We argue for decreasing the use of the word spread when describing the statistical idea of dispersion or variability in introductory statistics courses. In addition, we argue for increasing the use of the word variability as a replacement for spread.     

The IQs of children with ADHD are normally distributed

The purpose of this investigation was to determine whether or not attention-deficit/hyperactivity disorder (ADHD)-when there was an absence of reading problems-was associated with having a high IQ. The vocabulary and block design short forms of the Wechsler Intelligence Scale for Children-Third Edition were administered to 63 children with ADHD, 69 children with reading difficulties (RD), and 68 children with comorbid ADHD + RD. Results indicated that the distributions of estimated Full Scale IQs (FSIQ) for each of the three groups of children did not differ significantly from a normal distribution, with the majority of children (more than 50%) in each group scoring in the average range. The percentage of children with ADHD who scored in the above-average range for FSIQ was not significantly higher than the percentages of children in the other two groups. No significant group differences emerged for estimated FSIQ, vocabulary, or block design. It was concluded that children with ADHD are no more likely to have an above-average IQ than are other children.     

Identity formation in educational settings: A critical focus for education in the 21st century

There is growing recognition that identity formation must become an important focus in education. Particularly in the 21st century, when modes of knowledge construction and accessibility to different types of knowledge are rapidly increasing and diversifying, academic learning cannot be divorced from students’ development of values, goals, social roles, and worldviews. The articles in this special issue present a diverse collection of research on students’ identity formation in educational settings. Yet, despite the diversity in perspectives, educational contexts, samples, and research and analytic methods, all of the articles highlight the role of the educational context in identity formation processes. We begin this introduction with a brief review of the increasing attention to identity formation in education. We follow with synopses of each of the articles in this special issue.