Subtypes of developmental dyslexia: The influence of definitional variables

The purpose of this study was to investigate the hypothesis that the manner in which a reading disability is defined will influence the conclusions that are made about the characteristics of the disability. To test this hypothesis, learning disabled and normally achieving children, aged 6 to 14, were administered tasks measuring grammatical, shortterm memory, phonological, reading, and visual-spatial skills. The poor readers were divided into groups of poor readers with

Language and Memory Development in Children with Down Syndrome at Mainstream Schools and Special Schools: A comparison

Increasingly, children with Down syndrome are receiving their education in mainstream schools but little research has investigated whether these placements may influence language and memory development. The present study compared 22 children with Down syndrome in mainstream school placements matched for chronological age with 22 children attending special schools in a different LEA where mainstream placements were rare. The children were assessed to obtain measures of the following language and memory abilities: receptive vocabulary; grammar comprehension; sentence repetition; digit span; face recognition; and memory for hand movements. Children in mainstream placements achieved significantly higher scores for vocabulary, grammar and digit span measures, but not for non-language based memory measures. More importantly, even after controlling for age and receptive vocabulary, grammar understanding and digit spans were significantly greater for the mainstream children.     

Preschoolers' Attention to Print During Shared Book Reading

Seventy-six children ages 3 to 5 were individually read two storybooks that had been specially formatted to contain salient printed words within the text, and illustrations and text on left or right-facing pages. The reader pointed to each word while reading to half of the children. After each book, children were asked to recognize elements of the illustrations and the specially formatted text elements from among a set of foils. Videotaped sessions were coded for the time children spent looking toward the pages with print versus illustrations. Analyses showed that the percentage of time looking at print was less than 2% in the no-pointing condition but increased with age. Pointing to the words increased print-looking time for all age groups and print target recognition for 4-year-olds. After controlling for receptive vocabulary, visual memory, and maturation associated with these scores, emergent orthography and letter-word identification predicted time looking at print and recognition of the print elements.     

内隐学习中象形文字促进幼儿汉字字形记忆的研究

以100名4-5岁中班幼儿为研究对象,采用任务分离范式考察内隐学习条件下象形文字(东巴文、甲骨文)对幼儿汉字字形记忆的影响。该篇研究包括两个实验,幼儿均通过颜色判断任务进行学习,实验1采用再认任务考察象形文字对幼儿汉字字形外显记忆的影响,实验2采用偏好判断任务考察象形文字对幼儿汉字字形内隐记忆的影响。研究发现,在内隐学习条件下,甲骨文比东巴文更能够促进汉字字形的外显记忆,象形文字可以成为幼儿汉字学习的良好辅助材料。     

The effects of different modes of verbalization on the recognition of object detail in pictures

The effects of different modes of verbalization on recognition memory of object detail were examined in first- and third-grade children and adults. The results indicated that both age of the subject and the type of verbalization used during initial picture viewing influenced recognition accuracy for object detail. When compared to nonverbal viewing groups, only specific types of verbalization increased recognition accuracy for third-grade and adult subjects. None of the modes of verbalization was effective in increasing first-grade recognition scores. The results indicate that general statements concerning the facilitating or inhibiting influence of verbalization on recognition memory must be qualified. In addition, the results showed that developmental differences in recognition accuracy are contingent upon the type of strategy used during the encoding process.     

Reading,syntactic, and working memory skills of bilingual Portuguese-English Canadian children

The purpose of the study was to examine the nature of language, memory, and reading skills of bilingual students and to determine the relationship between reading problems in English and reading problems in Portuguese. The study assessed the reading, language, and memory skills of 37 bilingual Portuguese-Canadian children, aged 9–12 years. English was their main instructional language and Portuguese was the language spoken at home. All children attended a Heritage Language Program at school where they were taught to read and write Portuguese. The children were administered word and pseudoword reading, language, and working memory tasks in English and Portuguese. The majority of the children (67%) showed at least average proficiency in both languages. The children who had low reading scores in English also had significantly lower scores on the Portuguese tasks. There was a significant relationship between the acquisition of word and pseudoword reading, working memory, and syntactic awareness skills in the two languages. The Portuguese-Canadian children who were normally achieving readers did not differ from a comparison group of monolingual English speaking normally achieving readers except that the bilingual children had significantly lower scores on the English syntactic awareness task. The bilingual reading disabled children had similar scores to the monolingual reading disabled children on word reading and working memory but lower scores on the syntactic awareness task. However, the bilingual reading disabled children had significantlyhigher scores than the monolingual English speaking reading disabled children on the English pseudoword reading test and the English spelling task, perhaps reflecting a positive transfer from the more regular grapheme phoneme conversion rules of Portuguese. In this case, bilingualism does not appear to have negative consequences for the development of reading skills. In both English and Portuguese, reading difficulties appear to be strongly related to deficits in phonological processing.     

从迫选再认测验看记忆编码过程的加工机制

人类记忆具有复杂的认知功能,可表现为多种类型,如内隐记忆、外显记忆等,不同的记忆类型在编码过程中是否就存在着差异?本文通过两阶段的迫选再认,分别以词和面孔为刺激,在单一测验中区分出记住、启动、忘记和虚报四种不同的记忆类型,然后比较不同类型的记忆项目在编码过程中的加工差异,结果发现记住和启动项目在学习阶段所获得的加工资源要多于忘记项目,而虚报项目所得到的加工资源最少,表明不论是外显还是内隐记忆,在编码阶段都需要获得一定的加工资源,否则就会从记忆痕迹中消失,甚至产生错误记忆。     

Memory Binding in Early Childhood: Evidence for a Retrieval Deficit

Previous research has suggested that performance for items requiring memory-binding processes improves between ages 4 and 6 ( J. Sluzenski, N. Newcombe, & S. L. Kovacs, 2006 ). The present study suggests that much of this improvement is due to retrieval, as opposed to encoding, deficits for 4-year-olds. Four- and 6-year-old children ( N  = 48 per age) were given objects, backgrounds, and object + background combinations to remember. Younger children performed equivalently to 6-year-olds during a working memory task for all types of memory questions but were impaired during a long-term memory task for the object + background combinations. Furthermore, this deficit was completely due to differences in false alarm rates, suggesting that separate analyses of hits and false alarms may be preferable to corrected recognition scores when studying memory development.     

Peers'' Perceptions of the Consequences That Victimized Children Provide Aggressors

Fourth- through seventh-grade children (mean age 11.5 years) estimated the likelihood that various consequences would occur following hypothetical acts of aggression toward victimized and nonvictimized classmates. Children also indicated how much they would care if the consequences were to occur. When contemplating aggression toward victimized classmates, children were more likely to expect tangible rewards, more likely to expect signs of victim suffering, and less likely to expect retaliation than when considering aggression against nonvictimized classmates. Also, when considering aggression toward victimized classmates, children cared more about securing tangible rewards but were less disturbed by the thought of hurting their victims or by the thought of their victims retaliating than when imagining aggression toward nonvictimized classmates. The foregoing pattern was stronger for boys than for girls. Implications for theories of aggression and for intervention with aggressive and victimized children are discussed.     

The Effect of Urdu Vocabulary Size on the Acquisition of Single Word Reading in English

The purpose of this study was to examine the effects of Urdu, a phonologically transparent orthography with regular letter-sound correspondences on the development of reading in English. The results showed that children who had high levels of vocabulary knowledge and phonological awareness in Urdu, were more likely to perform well on English reading and reading related tasks, but poorly on visual memory tasks. In contrast, children who had some Urdu word recognition skills, but low levels of Urdu vocabulary knowledge and Urdu phonological awareness tended to perform poorly on English reading and reading related tasks, but better on visual memory tasks. The findings provide further support to the direct impact of Urdu on single word reading in English.     

Racial Categorization Predicts Implicit Racial Bias in Preschool Children

This research investigated the relation between racial categorization and implicit racial bias in majority and minority children. Chinese and Indian 3- to 7-year-olds from Singapore (N = 158) categorized Chinese and Indian faces by race and had their implicit and explicit racial biases measured. Majority Chinese children, but not minority Indian children, showed implicit bias favoring own race. Regardless of ethnicity, children's racial categorization performance correlated positively with implicit racial bias. Also, Chinese children, but not Indian children, displayed explicit bias favoring own race. Furthermore, children's explicit bias was unrelated to racial categorization performance and implicit bias. The findings support a perceptual–social linkage in the emergence of implicit racial bias and have implications for designing programs to promote interracial harmony.     

Developmental changes in item and source memory: evidence from an ERP recognition memory study with children, adolescents, and adults

Event-related potential (ERP) correlates of item and source memory were assessed in 18 children (7-8 years), 20 adolescents (13-14 years), and 20 adults (20-29 years) performing a continuous recognition memory task with object and nonobject stimuli. Memory performance increased with age and was particularly low for source memory in children. The ERP difference between first presentations of objects and nonobjects, reflecting generic novelty processing, showed only small developmental changes. Regarding item memory, adults showed the putative ERP correlates of familiarity and recollection, whereas ERP effects in children and adolescents suggested a strong reliance on recollection. ERP correlates of source memory refined with age, suggesting maturation of strategic recollection between childhood and adolescence and the development of postretrieval control until adulthood.     

Sound-symbol learning in children with dyslexia

This study evaluated the effect of sound-symbol association training on visual and phonological memory in children with a history of dyslexia. Pretests of phonological and visual memory, a sound-symbol training procedure, and phonological and visual memory posttests were administered to children with dyslexia, to children whose dyslexia had been compensated through remedial training, and to age- and reading level-matched comparison groups. Deficits in visual and phonological memory and memory for sound-symbol associations were demonstrated in the dyslexia group. For children with dyslexia and children whose dyslexia had been remediated, the sound-symbol training scores were significantly associated with word and pseudoword reading scores and were significantly lower than those of the comparison groups. Children with dyslexia and children whose dyslexia had been compensated showed significantly less facilitation of phonological memory following the training than did typical readers. Skilled readers showed some reduction in accuracy of visual memory following the training, which may be the result of interference of verbalization with a predominantly visual task. A parallel decrease was not observed in the children with dyslexia, possibly because these children did not use the verbal cues. Children with dyslexia and children whose dyslexia had been compensated seemed to have difficulty encoding the novel sounds in memory. As a result, they derived less phonological memory advantage and less visual memory interference from the training than did typical readers. Children in the compensated dyslexia group scored lower on sound-symbol training than their age peers. In other respects, the scores of these children were equivalent to those of the typically reading comparison groups. Children in the compensated dyslexia group exhibited higher phonological rehearsal, iconic memory, and associative memory scores than children in the dyslexia group. Implications for the remediation of dyslexia are discussed.     

Long-term outcome of the early identification and intervention of reading disabilities

This study examined the longitudinal effects of an early literacy intervention in Kindergarten. A group of children completed reading and cognitive measures between Kindergarten (5–6 years old) and Grade 7 (12–13 years old). Our results showed that 22 % of children were identified as at-risk for reading deficits in Kindergarten, but only 6 % of children had reading difficulties in Grade 7. In Kindergarten, at-risk groups scored lower than not-at-risk groups on measures of word and letter recognition, phonological processing, rapid naming, working memory, and language. We also examined a small group of children who were not-at-risk in Kindergarten, but had a reading disability in Grade 7; these children did not obtain lower scores than average readers on any of our Kindergarten measures. Finally, we illustrated that the trajectory of word reading skills was generally stable, such that most children scored within the average range between Grade 1 and 7. Our results provide evidence for the long-term positive outcomes of early literacy instruction.     

Preventing a summer slide in reading – the effects of a summer school

ABSTRACT

Researchers have found that summer reading loss contributes to the reading achievement gap between low and high socioeconomic (SES) children. This study aimed to examine the effectiveness of a 3-week summer intervention in addressing this slide for 36 low SES children compared with another 36 children in a matched control group from one New Zealand school. The program involved one-to-one tutoring with explicit phonics instruction, high-frequency word-reading practice and application of these skills in reading age-appropriate texts. Results showed that although the mean reading comprehension slide was 5.8 months for both groups, the summer school group had higher word reading scores than the control group. The summer school participants showed improvements in phonological recoding ability, word reading, spelling and passage reading accuracy. These were not sufficient to stop the reading comprehension slide, but the program did make inroads. With further emphasis on comprehension strategies, the achievement gap may narrow.     

Some Bases Used by Students in Choosing Partners in the Chemistry Laboratory

Abstract

The effects of mobility upon performance on standardized group tests of mental ability of disadvantaged children in 18 elementary schools in New York City were assessed.

Among nontransient pupils there was no significant difference between the mean Otis Alpha test score at the third grade and the mean Otis Beta score which was taken three years later at the sixth grade. However, the Otis Alpha scores of these nontransients were significantly higher than that of their third-grade transient classmates. Also, the Otis Beta scores of these same non transients were significantly better than that of their sixth-grade classmates.

This study emphasized differences in the test performance of transient and nontransient pupils in a school population of disadvantaged children and pointed up the need for separate longitudinal analyses of these two groups.     

Prayer Lessons to Promote Happiness Among Kindergarten School Children: A Cross-Country Experimental Study

Based on a one-year longitudinal experimental study with 3,782 kindergarten school children across 15 countries, this article examines the association between prayer and happiness. Results show that the post-test scores on the faces scale were higher for the participant group who had taken the prayer lessons vis-à-vis the comparison group. Regression analyses showed that children from affluent countries, Christian children, those who took more prayer lessons, and those who regularly self-practiced were more likely to be happier. Hierarchical and Tobit regression models revealed that frequency of prayer lessons and self-practice were strongest predictors of post-test faces scale scores. The happiness promoting potential of prayer for kindergarten school children is foregrounded.     

Social norms and self-presentation: children's implicit and explicit intergroup attitudes

Two studies examined whether social norms and children's concern for self-presentation affect their intergroup attitudes. Study 1 examined racial intergroup attitudes and normative beliefs among children aged 6 to 16 years (n=155). Accountability (i.e., public self-focus) was experimentally manipulated, and intergroup attitudes were assessed using explicit and implicit measures. Study 2 (n = 134) replicated Study 1, focusing on national intergroup attitudes. Both studies showed that children below 10 years old were externally motivated to inhibit their in-group bias under high public self-focus. Older children were internally motivated to suppress their bias as they showed implicit but not explicit bias. Study 1, in contrast to Study 2, showed that children with low norm internalization suppressed their out-group prejudice under high public self-focus.