Space-time invariance in handwriting: Contrasts between primary school children displaying advanced or retarded handwriting acquisition

Previous research into the handwriting of adult subjects has highlighted the possible roles of ‘relative timing’ (Viviani and Terzuolo 1980) and simple oscillations (Hollerbach 1981) in controlling movement. Both of these factors provide interesting perspectives with which to view the development of fine motor control in children. The spatio-temporal structure of writing movements was examined between children with refined handwriting skills and those exhibiting unusually poor writing for their age. The analysis concentrated on three sites of temporal variability: absolute timing, temporal patterning, and rhythmic content of the writing movements. The results supported the notion that the relative timing of segments within a movement sequence acts as a major constraint on motor output variability. It is suggested, however, that previous simplistic views of ‘relative timing’ be expanded, and that such timing may be dictated by optimisation strategies. Differences in the stability of the graphic product between groups could not be accounted for by differences in the rhythmic content of the movements. In the absolute timing of writing tasks, the results suggest that variability in writing time from trial to trial, and duration of intra-task pauses, are better indicators of writing difficulties than total writing time or the number of pauses.     

Assessing handwriting speed of children biliterate in English and Chinese

The assessment of multiliterate handwriting performance is rarely reported despite increased globalization. The present study describes the psychometric properties of a handwriting speed test developed for children who are biliterate in English and Chinese. This included interrater reliability, test-retest reliability, interitem correlation, construct validity, and concurrent validity. The test's reliabilities between two raters and over a 1-wk. interval were high with ICCs ranging from .89 to .99. Interitem correlation between the English and Chinese items was .87. The presence of age trends but not sex differences was a positive indicator of the test's validity. Correlations of .91 and 1.00 between the Chinese and the English items of the Handwriting Assessment Tool with the Chinese Handwriting Speed Test and Handwriting Speed Test, respectively, provided evidence of concurrent validity. These preliminary results showed the Handwriting Assessment Tool is reliable and is a potentially useful handwriting test for children biliterate in English and Chinese. The feasibility of assessing biliterate handwriting speed performance with the same set of scoring criteria for different writing systems was supported.     

Dynamic time warping: a new method in the study of poor handwriting

Poor handwriting is a diagnostic criterion for developmental coordination disorder. Typical of poor handwriting is its low overall quality and the high variability of the spatial characteristics of the letters, usually assessed with a subjective handwriting scale. Recently, Dynamic Time Warping (DTW), a technique originally developed for speech recognition, was introduced for pattern recognition in handwriting. The present study evaluates its application to analyze poor handwriting. Forty children attending Dutch mainstream primary schools were recruited and based on their scores on the Concise Evaluation Scale for Children's Handwriting (Dutch abbreviation: BHK), 20 good and 20 poor writers (of whom 13 were scheduled for handwriting intervention) were identified. The groups were matched for age (7-9 years), school grade (grades 2 and 3) and handedness. The children subsequently wrote sequences of the letter "a" on a graphics tablet in three conditions (normal, fast, and accurate). Classical kinematics were obtained and for each individual letter DTW was used to calculate the distance from the mean shape. The DTW data revealed much higher variability in the letter forms of the poor writers that was independent of the kinematic results of larger trajectories, faster movements, and higher pen pressure. The current results suggest that DTW is a valid and objective technique for letter-form analysis in handwriting and may hence be useful to evaluate the rehabilitation treatments of children suffering from poor handwriting. In education research it may be exploited to explore how children (should) learn to write.     

Propulsion strategy in the gait of primary school children; the effect of age and speed

The strategy used to generate power for forward propulsion in walking and running has recently been highlighted as a marker of gait maturation and elastic energy recycling. This study investigated ankle and hip power generation as a propulsion strategy (PS) during the late stance/early swing phases of walking and running in typically developing (TD) children (15: six to nine years; 17: nine to 13 years) using three-dimensional gait analysis. Peak ankle power generation at push-off (peakA2), peak hip power generation in early swing (peakH3) and propulsion strategy (PS) [peakA2/(peakA2 + peakH3)] were calculated to provide the relative contribution of ankle power to total propulsion. Mean PS values decreased as speed increased for comfortable walking (p < 0.001), fast walking (p < 0.001) and fast running (p < 0.001), and less consistently during jogging (p = 0.054). PS varied with age (p < 0.001) only during fast walking. At any speed of fast walking, older children generated more peakA2 (p = 0.001) and less peakH3 (p = 0.001) than younger children. While the kinetics of running propulsion appear to be developed by age six years, the skills of fast walking appeared to require additional neuromuscular maturity. These findings support the concept that running is a skill that matures early for TD children.     

Automatic segmentation as a tool for examining the handwriting process of children with dysgraphic and proficient handwriting

The purpose of this study was to use an x-y digitizer to collect handwriting samples typical of those written by the child in his or her natural environment, to analyze these samples with novel segmentation algorithms, and to present them visually in ways that illuminate spatial and temporal dynamic features amongst children with dysgraphic and proficient handwriting. While using the POET software (Penmanship Objective Evaluation Tool), a paragraph was copied onto paper affixed to an x-y digitizer by third-grade students, 14 with proficient and 14 with poor handwriting. A segmentation algorithm was developed to automatically isolate writing segments. Results yielded significant differences between the groups in various measures, including the number of the raw segments (i.e., the number of segments before combined with letters), the number of reverse segments (i.e., when the participant returned to correct or complete a previously written segment), the number of letters per minute, and the mean "In-Air" time between letters. Variability in both the spatial and temporal domains of instances of the same letter throughout the text was greater among the dysgraphic handwriters in comparison to the variability among the proficient. These results demonstrated the potential of using automated analytic techniques and visual display to achieve a more comprehensive understanding of handwriting difficulties.     

Father-absence and scholastic performance in primary school children

The relationship between father-absence and academic achievement in children was studied in a sample of 80 urban children of predominantly lower social status. Differences between the father-absent and father-present groups in IQ and family background were controlled by matching. Boys and girls from father-present homes were found to score higher on standardized reading tests than children from father-absent homes, regardless of the child’s age when the father became absent. Mediating variables by which father-absence may exert its influence (achievement motivation, absenteeism, parental attitudes, sex-role identity, life stress) were also examined. Contrary to predictions, children from father-absent homes scored higher on achievement motivation measures than children from intact homes. Girls from father-absent homes missed more school and scored lower on tests of “masculinity” than girls raised in father-present homes. No other mediating variables exerted a significant influence on the results. These data are discussed in the light of the “confluence” theory of cognitive development. This study is part of a thesis submitted in partial fulfillment of the requirements of the M.A. degree by the senior author. Preparation of this article was assisted by a grant from the Australian Research Grants Scheme to the second author.     

Friendship competence in kindergarten and primary school children

Aim of this study was to confirm the increase of friendship competence and its multifactorial nature in kindergarten and primary school children and to verify gender differences, parenting and socioeconomic status influences on friendship concept. A semi-structured interview was administered in a natural context to 3–8 years-old children (N = 99; mean = 6.1 years; SD = 1.35). The coding provides five sub-categories: (1) friendship; (2) social perspective taking; (3) emotions understanding; (4) social interaction strategies; (5) aggressiveness. Three parental style questionnaires were administrated to parents. Results confirm the increasing of friendship competence according to age. No gender difference was found. Father's involvement in son's activities was inversely correlated with son's aggressivity.     

Learning with microcomputers: Training primary school children on a problem-solving program

This study investigated the effects of structured training at two informational levels on children's performance on a problem-solving computer program. An informed-training group (strategy training with detailed explanations) performed at a superior level to a blind-training group (strategy training with no explanations) and a control group. This superiority was maintained 3 weeks later on retest. The results are discussed in relation to the processes that mediate and facilitate training.     

An investigation into the effects of meditation with children in a Catholic primary school

This article reports on some findings of a small research project that examined the role of meditation in enhancing the relational lives of children, in particular, their relationship with God. It begins by discussing the literature on relevant research studies that investigate different aspects of meditation. The research method in the project was a case study that involved one Catholic primary school in the Melbourne Archdiocese. Different data collecting strategies were utilised, and this article presents and discusses the analysis and findings from one data source – the analysis and interpretation of a drawing activity which was designed to follow one of the weekly meditation exercises that had been observed by the researchers. Finally, the implications of the findings for education and, in particular, religious education are presented.     

Dyslexic children fail to comply with the rhythmic constraints of handwriting

In this study, we sought to demonstrate that deficits in a specific motor activity, handwriting, are associated to Developmental Dyslexia. The linguistic and writing performance of children with Developmental Dyslexia, with and without handwriting problems (dysgraphia), were compared to that of children with Typical Development. The quantitative kinematic variables of handwriting were collected by means of a digitizing tablet. The results showed that all children with Developmental Dyslexia wrote more slowly than those with Typical Development. Contrary to typically developing children, they also varied more in the time taken to write the individual letters of a word and failed to comply with the principles of isochrony and homothety. Moreover, a series of correlations was found among reading, language measures and writing measures suggesting that the two abilities may be linked. We propose that the link between handwriting and reading/language deficits is mediated by rhythm, as both reading (which is grounded on language) and handwriting are ruled by principles of rhythmic organization.     

Improving attention behaviour in primary and secondary school children with a Computer Assisted Instruction procedure

Attention disorders are one of the major sources of poor school performance. This research project was designed to examine whether a Computer Assisted Instruction (CAI) approach would be successful in achieving higher rates of attention. In order to increase attention behaviour during school time, psychologically‐designed software was developed. The software, called “How to improve your mental skills,” consists of three games based on multimedia perception tasks. First, 155 elementary school children with an average age of 12.4 years, from Cadiz (Spain) School District, were evaluated with two attention tests, the Perception Differences Test (PDT), and the subtest Spatial of Primary Mental Aptitude (S‐PMA). Students were divided and balanced into one experimental and two control groups, according to their scores on the PDT. Then, 10 training sessions, of 25 minutes each, with the software “How to improve your mental skills”, were administered to the experimental group. Children from control group 1 played with a well‐known computer game during the same period of time, whereas children from control group 2 remained in the classroom with nonspecific training. Finally, after the experimental sessions, all the children were re‐evaluated with standard attention tests. Analyses of data included: (1) pre‐ and post‐training comparison of the experimental group scores on the PDT; (2) comparison of the experimental and control group 1 and 2 scores on the PDT and S‐PMA tests after training; and (3) gender and grade interference effects on attention behaviour. Results suggest that children from the experimental group significantly improved their attention behaviour as assessed by the PDT and S‐PMA tests after 10 training sessions with the specific computer software. No gender and grade interference effects on attention behaviour were found. Les désordres d'attention sont une des sources majeures de pauvre performance scolaire. Ce projet de recherche fut conçu pour examiner comment une approche d'enseignement assisté par ordinateur peut être efficace pour obtenir de plus hauts niveaux d'attention. Afin d'augmenter le comportement d'attention en classe, un programme informatique intitulé «Comment améliorer vos habiletés mentales» fut développé. Ce programme, basé sur la psychologie de la peception, consiste en trois jeux multimédias interactifs. L'étude s'est déroulée en trois phases. Premièrement, 155 enfants de L'école primaire, âgés en moyenne de 12,4 ans et issus du district scolaire de Cadiz, en Espagne, furent évalués à partir de deux tests d'attention: le Perception Differences Test (PDT) et le sous‐test Spatial of Primary Mental Aptitude (S‐PMA). Les élèves furent divisés en trois groupes, un groupe expérimental et deux groupes contrôle, en fonction de leur score au PDT. En deuxième lieu, le groupe expérimental fut soumis à 10 sessions d'entraînement, chacune d'une durée de 25 minutes, lors desquelles le programme informatique « Comment améliorer vos habiletés mentales » fut administré. Les enfants du premier groupe contrôle ont joué avec un autre programme informatique bien connu durant ces mêmes sessions, tandis que les enfants du second groupe contrôle demeuraient en classe sans recevoir d'entraînement particulier. En troisième lieu, tous les enfants furent réévalués à L'aide de tests d'attention standardisés. Trois séries d'analyses furent menées. La première visait à comparer les scores obtenus au PDT, au pré‐test et au post‐test, pour le groupe expérimental. La seconde consistait à comparer les scores obtenus au PDT et au S‐PMA, au post‐test, par les trois groupes. La troisième série d'analyses visait à examiner les effets du genre et du niveau de scolarité sur le comportement d'attention. Les résultats suggèrent que les enfants du groupe expérimental ont significativement amélioré leur comportement d'attention suite aux sessions d'entraînement avec le programme informatique. De plus, aucune interférence du genre et du niveau de scolarité ne fut observée. Los déficits de atención son una de las causas más frecuentes de fracaso escolar. La presente investigación se diseñó para someter a prueba si la Enseñanza Asistida por Ordenador (CAI) puede ser un procedimiento eficaz para conseguir mayores niveles de atención. Con el fin de conseguir una mejora de la atención en la escuela, se ha desarrollado un programa informático fundamentado en la psicología de la percepción que consiste en tres juegos interactivos multimedia. El estudio se realizó en tres fases. Primero, se evaluó a 155 niños de edad escolar del distrito de Cádiz (España) con dos pruebas estandarizadas de atención, Perception Differences Test (PDT), y sub‐test Spatial of Primary Mental Aptitude (S‐PMA). Tras ello, se formó un grupo experimental al que se realizaron 10 sesiones de entrenamiento de 25 minutos de duración cada una con el programa “Cómo mejorar tus habilidades mentales.” Otro grupo de alumnos a los que se les denominó control‐1 permanecieron jugando con un conocido juego informático durante el mismo período de tiempo. Los niños del grupo control‐2 permanecieron en sus clases sin un entrenamiento específico. Tras las sesiones experimentales, se evaluó de nuevo a todos los niños con las pruebas estandarizadas de atención. Primero, se comparó las calificaciones del grupo experimental en la PDT antes del entrenamiento y después del entrenamiento; segundo, se comparó las calificaciones del grupo experimental y de los grupos control 1 y 2 en las pruebas PDT y S‐PMA después del entrenamiento; y tercero, se analizó los efectos de interferencia del grado escolar y el género. Los resultados indican que los participantes del grupo experimental mejoraron su conducta atencional tras las sesiones de entrenamiento con el programa informático. No se encontraron efectos de interferencia del grado escolar o del género sobre la conducta de atención.     

Effects of speed and accuracy instructions on performance in a visual search task by children with good or poor attention

Children rated by teachers as having good or poor attention ability carried out a visual search task in which they were required to find a series of targets in a complex display. Different groups were told to concentrate on either speed or accuracy. Previous studies using this task have consistently shown that children rated as having poor attention make more errors (false alarms to non‐targets in the display), but do not differ in the time to make a correct response; this result was replicated. Though the instructions produced wide differences in speed and error rates in the expected directions, these differences were similar in both attention groups and the differences in error rates between the two groups remained unchanged. It is suggested that these findings are not compatible with the view that children with poor attention make errors primarily due to fast impulsive responding, nor with an explanation in terms of slower processing of the input by such children. An alternative explanation of the high error rates in such children is offered in terms of weak executive function resulting in poor ability to inhibit false alarms to non‐targets.     

Reduced looming sensitivity in primary school children with Developmental Co-ordination Disorder

Almost all locomotor animals are sensitive to optical expansion (visual looming) and for most animals this sensitivity is evident very early in their development. In humans there is evidence that responses to looming stimuli begin in the first 6 weeks of life, but here we demonstrate that as children become independent their perceptual acuity needs to be 50 to 100 times better than has been demonstrated in infants in order to be skilful at collision avoidance at a roadside. We have recently established that sensitivity to the detection of visual looming in 6- to 11-year-old children is significantly below that of adults (Wann, Poulter & Purcell, 2011). Here, using comparable methods, we explore looming detection sensitivity in children with Developmental Co-ordination Disorder (DCD), who show broad patterns of impairment in visuo-motor control. We presented visual simulations of approaching vehicles, scaled to represent different approach rates, to children with DCD aged between 6 and 11 years (n = 11) and typically developing age and gender matched controls (n = 11). Looming detection thresholds were measured under foveal and perifoveal viewing conditions, for isotropic expansion and isotropic expansion with simulated viewpoint motion. Our results show that there are situations in which children with DCD may fail to detect vehicles approaching at speeds in excess of 22 km/h, suggesting a developmental immaturity in looming sensitivity. This provides one of the first clear demonstrations of low-level motion processing deficits in children with DCD. The decrement observed may give rise to potential errors in the road crossing behaviour of these children, whereby approaching vehicles could be perceived as stationary. These findings further contribute towards understanding the adverse statistic that children under 9 years of age are four times more likely than adults to be involved in a road accident as a pedestrian.     

Visual perceptual and handwriting skills in children with Developmental Coordination Disorder

ObjectiveChildren with Developmental Coordination Disorder demonstrate a lack of automaticity in handwriting as measured by pauses during writing. Deficits in visual perception have been proposed in the literature as underlying mechanisms of handwriting difficulties in children with DCD. The aim of this study was to examine whether correlations exist between measures of visual perception and visual motor integration with measures of the handwriting product and process in children with DCD.MethodThe performance of twenty-eight 8–14 year-old children who met the DSM-5 criteria for DCD was compared with 28 typically developing (TD) age and gender-matched controls. The children completed the Developmental Test of Visual Motor Integration (VMI) and the Test of Visual Perceptual Skills (TVPS). Group comparisons were made, correlations were conducted between the visual perceptual measures and handwriting measures and the sensitivity and specificity examined.ResultsThe DCD group performed below the TD group on the VMI and TVPS. There were no significant correlations between the VMI or TVPS and any of the handwriting measures in the DCD group. In addition, both tests demonstrated low sensitivity.ConclusionClinicians should execute caution in using visual perceptual measures to inform them about handwriting skill in children with DCD.     

Applicability of olweu' aggression inventory in a sample of chinese primary school children

A sample of Chinese children in Grade 4 (155 boys and 135 girls with an average age of 10.3 years) completed Olweu' Aggression Inventory, an instrument developed for the assessment of aggressive and aggression controlling behavior tendencies in a Western culture. Results indicated that the questionnaire gave quite meaningful information when used with the Chinese children. Two interpretable factors, general aggression and aggression control, were derived; the pattern of factor loadings was essentially the same for boys and girls. The internal consistency reliabilities of the two factor scales were in the 0.80s and 0.70s, respectively. Overall, the findings indicated that there were distinct measurable individual differences among Chinese children in the domain of aggression—in spite of strong societal pressures against aggressive behavior and towards aggression control. However, some results suggested that aggression was a somewhat more global, or less differentiated, phenomenon for the Chinese as compared with the Swedish children. The two main factor scales were related meaningfully to other self report dimensions such as positive attitude to school and negative relations with parents. In all probability, the pattern of findings gave a valid picture of the behavior and attitudes of the Chinese children: By and large they were nonaggressive, well-behaved, ambitious, friendly, prosocial, and exerted strong control over aggressive feelings and behavior tendencies. In possible conflicts with adults, they were likely to take a humble and submissive attitude. These findings agree well with the impressions of Western observers and with what can be expected on the basis of the typical socialization patterns found in the People's Republic of China. Furthermore, quite marked sex differences in aggression were obtained and a partial correlation analysis showed that the higher aggression level of the boys could only to a very limited degree be explained by their lower level of aggression control or inhibitions. Generally, the sex differences in aggression were interpreted to reflect genetic variations in basic predispositions in boys and girls that had been subtly enlarged by more or less clear, sex-linked differences in environmental conditions.     

小学高年级学生创造力的发展：性别差异及学校支持的作用

对203名4年级学生进行3年追踪测试(到6年级),采用多水平分析法考察创造力的发展趋势、性别差异以及教师/同伴支持对创造力发展的影响。结果表明:(1) 4～6年级小学生的流畅性呈线性增长趋势,灵活性和独创性呈非线性增长趋势,初始水平与增长速度呈正相关。(2)女生灵活性和独创性的初始水平高于男生。(3)教师支持正向预测男生灵活性的初始水平,正向预测流畅性的初始水平和独创性的增长速度。(4)教师支持的发展正向预测流畅性的发展。