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1.
Nancy C. JordanJanellen Huttenlocher Susan Cohen Levine 《Learning and individual differences》1994,6(4)
In two studies, we compared young children's performance on three variations of a nonverbally presented calculation task. The experimental tasks used the same nonverbal mode of presentation but were varied according to response type: (1) putting out disks (nonverbal production); (2) choosing the correct number of disks from a multiple-choice array (nonverbal recognition); and (3) giving a number word (verbal production). The verbal production task required children to map numerosities onto the conventional number system while the nonverbal production and nonverbal recognition tasks did not. Study 1 showed that the performance of 3-, 4- and 5-year-old middle-income children (N = 72) did not vary with the type of response required. Children's answers to nonverbally presented addition and subtraction problems were available in both verbal and nonverbal forms. In contrast. Study 2 showed that low-income children (3- and 4-year-olds; N = 48) performed significantly better on both nonverbal response type tasks than on the verbal response type task. Analysis of individual data indicated that a number of the low-income children were successful on the completely nonverbal calculation tasks, even though they had difficulty with verbal counting (i.e., set enumeration and cardinality). The findings suggest that the ability to calculate does not depend on mastery of conventional symbols of arithmetic. 相似文献
2.
J Becker 《Child development》1989,60(5):1147-1157
Preschoolers' use of number words to denote one-to-one correspondence was assessed by 2 tasks. In the matching task, the children matched 2 sets to determine whether they could be put in one-to-one correspondence and then judged whether the same number word should be used to denote both sets. In the counting task, the children counted 2 sets and used the final number words of the count to determine whether the sets could be put in one-to-one correspondence. Most 4-year-olds and some 3 1/2-year-olds use number words to denote one-to-one correspondence in each of these tasks. These findings are related to previous research. 相似文献
3.
Masataka N 《Journal of deaf studies and deaf education》2006,11(2):139-143
Previous research has demonstrated that both hearing adults and hearing children with no training in arithmetic successfully performed approximate arithmetic on large sets of elements. Here, the possibility is explored that the same phenomenon can be confirmed in deaf adults who have acquired a signed language as their first language. Results reveal that they can perform simple arithmetic subtraction on nonsymbolic numerosities. Their performance levels were even higher than those of hearing adults who participated in the experiment as a control group. On the other hand, the performance levels of subtraction of the deaf adults in the formal mathematics were lower than those of the hearing adults. The findings are argued in terms of the characteristics of cognitive capabilities the deaf adults acquired through their development. 相似文献
4.
Children struggle with exact, symbolic ratio reasoning, but prior research demonstrates children show surprising intuition when making approximate, nonsymbolic ratio judgments. In the current experiment, eighty-five 6- to 8-year-old children made approximate ratio judgments with dot arrays and numerals. Children were adept at approximate ratio reasoning in both formats and improved with age. Children who engaged in the nonsymbolic task first performed better on the symbolic task compared to children tested in the reverse order, suggesting that nonsymbolic ratio reasoning may function as a scaffold for symbolic ratio reasoning. Nonsymbolic ratio reasoning mediated the relation between children’s numerosity comparison performance and symbolic mathematics performance in the domain of probabilities, but numerosity comparison performance explained significant unique variance in general numeration skills. 相似文献
5.
Numerical processing has been extensively studied by examining the performance on basic number processing tasks, such as number priming, number comparison, and number line estimation. These tasks assess the innate “number sense,” which is assumed to be the breeding ground for later mathematics development. Indeed, several studies have associated children's performance in these tasks with individual differences in mathematical achievement. To date, however, most of these studies have cross‐sectional designs. Moreover, the few longitudinal studies either use complex tasks (e.g., story problems) or investigate only one of these basic number processing tasks at a time. In this study, we examine the association between the performance of children on several basic number processing tasks and their individual math achievement scores on a curriculum‐based test measured 1 year later. Regression analyses showed that most of the variance in children's math achievement was predicted by nonsymbolic number line estimation performance (i.e., estimating large quantities of dots) and, to a lesser extent, the speed of comparing symbolic numbers. This knowledge about the predictive value of the performance of 5‐ to 7‐year‐olds on these markers of number processing can help with the early identification of at‐risk children. In addition, this information can guide appropriate educational interventions. 相似文献
6.
The main point of our study was to examine the vocabulary knowledge of pupils in grades 3–6, and in particular the relative
reading vocabulary disadvantage of hearing-impaired pupils. The achievements of 394 pupils with normal hearing and 106 pupils
with a hearing impairment were examined on two vocabulary assessment tasks: a lexical decision task and a use decision task.
The target words in both tasks represent the vocabulary children should have at the end of primary school. The results showed
that most hearing pupils reached this norm, whereas most hearing-impaired pupils did not. In addition, results showed that
hearing-impaired pupils not only knew fewer words, but that they also knew them less well. This lack of deeper knowledge remained
even when matching hearing and hearing-impaired children on minimal word knowledge. Additionally, comparison of the two tasks
demonstrated the efficacy of the lexical decision task as a measure of lexical semantic knowledge. 相似文献
7.
People associate numbers and horizontal space. This association has been demonstrated by the so‐called SNARC (Spatial‐Numerical Association of Response Codes)‐effect, with Western participants responding faster to larger numbers with their right hand and vice versa for smaller numbers. SNARC‐like effects have also been reported for preschoolers. However, it remains unclear whether children's SNARC‐effects are exclusively based on number or whether nonnumerical factors such as surface area can also play a role. To address this question, we asked children to compare quantities in a nonsymbolic number comparison task. On half of the trials, the larger set took up more total surface area (congruent trials), and on the other half, the smaller number had more surface area (incongruent trials). We obtained a significant interaction of SNARC‐like effects and congruency. SNARC‐effects were only observed for congruent trials, demonstrating that preschoolers' spatial‐numerical associations can be affected by nonnumerical magnitude. 相似文献
8.
A precisely controlled automated procedure confirms a developmental decalage: Infants acquiring English link count nouns to object categories well before they link adjectives to properties. Fourteen- and 18-month-olds ( n = 48 at each age) extended novel words presented as count nouns based on category membership rather than shared properties. When the same words were presented as adjectives, infants revealed no preference for either category- or property-based extensions. The convergence between performance in this automated procedure and in more interactive tasks is striking. Perhaps more importantly, the automated task provides a methodological foundation for (a) exploring the development of form–meaning links in infants acquiring languages other than English and (b) investigating the time course underlying infants' mapping of novel words to meaning. 相似文献
9.
Improving the Numerical Knowledge of Children with Autism Spectrum Disorder: The Benefits of Linear Board Games 
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下载免费PDF全文 Rajiv Satsangi Laura Bofferding 《Journal of Research in Special Educational Needs》2017,17(3):218-226
A lack of numerical knowledge early on can impede a child's academic development. In past research, playing linear board games improved children's understanding of numerical relations, which the authors theorised could extend to children with autism spectrum disorder. For this pilot study, 10 children played a board game where they moved tokens across coloured tiles displaying the numbers 1–10. During gameplay, students in the experimental group focused on the numbers on the tiles, while the control group focused on the colours. The assessment consisted of a number line estimation task, where students placed numbers ranging from 1 to 9 on a blank number line. Results showed children in the experimental group experienced statistically significant improvement in their understanding of numerical relationships of numbers on the number line estimation task. Findings indicate extended experiences with linear board games can support the numerical development of children with autism spectrum disorder. 相似文献
10.
Sandrine Mejias Jacques Grégoire Marie-Pascale Noël 《Learning and individual differences》2012,22(1):164-170
It has been hypothesized that developmental dyscalculia (DD) is either due to a defect of the approximate number system (ANS) or to an impaired access between that system and symbolic numbers. Several studies have tested these two hypotheses in children with DD but none has dealt with adults who had experienced DD as children.This study aimed to compare these two hypotheses in an adult population in order to investigate which deficits still persist at that age. To that aim, numerical estimation tasks were given to adults who had or had not experienced DD as a child. Three of the estimation tasks required a mapping between the ANS and symbolic numbers: participants had to estimate the number of same or different-sized dots presented by producing the corresponding Arabic number or, conversely, to produce the number of dots corresponding to a presented Arabic number. A fourth task did not require any processing of symbolic numbers; participants had to produce a collection of dots of the same numerosity as another one previously presented.Consistently, in all the four numerical tasks and irrespective of whether the tasks used symbolic numbers or not, the estimates of DD participants were less accurate than those of the control participants. These results indicate that adults who had experienced DD as children continue to demonstrate a less precise magnitude representation. 相似文献
11.
Some previous studies of visual word recognition have reported an interaction between visual field and word length (measured by number of letters), such that recognition is affected more by word length for words presented in the left than for words presented in the right visual field. However, when manipulating serial position of letters in words to measure length effects, there are also reports of symmetrical word length effects in the two visual fields. Here we report two experiments, presenting four‐ and seven‐letter words, suggesting that the serial position and length effects in the hemispheres are separable and task dependent. For tasks that rely more heavily on letter‐level processing such as letter search (Experiment 1), performance in both hemifields showed similar effects of serial position; however, when comparing four‐ and seven‐letter words, an effect of word length was evident only in the left visual field, in line with the well‐established interaction between word length and hemifield. An interaction between word length and hemifield was confirmed for the same stimuli when they were employed in a lexical decision task, which forced whole‐word processing (Experiment 2). We conclude that the effects of serial position and number of letters in the two visual fields are separable, and are selectively affected by task type. 相似文献
12.
This study investigates the maintenance and generalization of preacademic objectives in children with mental retardation from early intervention programs. All the subjects (25) had mastered, according to their Individual Education Programs (IEPs), at least one task in the areas of color, shape, number, or big/little . They, along with children in three comparison groups, were given a series of tasks that included the same previously achieved IEP objectives (maintenance) and closely related tasks within the same domain (generalization). The findings indicated variability in maintenance and generalization for the children in early intervention, better for color and shape than for number and big/little. Success on generalization was below the usual standard indicating mastery (85%-100%). On the generalization tasks, children in early intervention performed similarly to older children with retardation who had lower standard scores (Peabody Picture Vocabulary Test-Revised) but roughly equivalent language ages. They performed less well than older children with retardation who had similar standard scores but higher language ages. They also performed less well than children without disabilities in regular preschool programs who were close in chronological age, but had higher standard scores and higher language ages. We conclude that performance on these tasks is closely tied to developmental age regardless of chronological age and "IQ" status. Findings are discussed in relationship to preacademic curriculum in early intervention programs. 相似文献
13.
The present study investigated the associations of visual-spatial attention with word reading fluency and spelling in 92 third grade Hong Kong Chinese children. Word reading fluency was measured with a timed reading task whereas spelling was measured with a dictation task. Results showed that visual-spatial attention was a unique predictor of speeded reading accuracy (i.e., the total number of words read correctly divided by the total number of words read in a timed reading task) but not reading speed (i.e., the number of words read correctly in the same task) after controlling for age, non-verbal intelligence, morphological awareness, phonological awareness, orthographic knowledge, and rapid automatized naming. Visual-spatial attention also explained unique variance in word spelling measured with a dictation task after the same control variables. The findings of the present study suggest that visual-spatial attention is important for literacy development in Chinese children. 相似文献
14.
How do children map number words to the numerical magnitudes they represent? Recent work in adults has shown that two distinct mechanisms—structure mapping and associative mapping—connect number words to nonlinguistic numerical representations (Sullivan & Barner, 2012 ). This study investigated the development of number word mappings, and the roles of inference and association in children's estimation. Fifty‐eight 5‐ to 7‐year‐olds participated, and results showed that at both ages, children possess strong item‐based associative mappings for numbers up to around six, but rely primarily on structure mapping—an inferential process—for larger quantities. These findings suggest that children rely primarily on an inferential mechanism to construct and deploy mappings between number words and large approximate magnitudes. 相似文献
15.
Xia Li Ye Sun Arthur J. Baroody David Purpura 《European Journal of Psychology of Education - EJPE》2013,28(4):1525-1542
Recent research has found that linguistic cues may affect children's number word acquisition. Two studies were undertaken to evaluate the use of singular/plural markings and small number words in Chinese and English and its effect on children's number concepts. The first study utilized the CHILDES data and investigated how singular/plural markings and number words of "one," "two," and "three" are used in Chinese and compared it with that of English. The second study entailed testing twenty-four 2.4- to 3.3-year-old Chinese- and English-speaking children on number identification tasks. Results show that the English-speaking children performed significantly better than Chinese-speaking children in identifying "two," "three," and "four" as referents for collections of multiple items but not in identifying those number words as referents for specific pluralities. Additionally, the results show that English-speaking children were more inclined to count when quantifying small number sets than Chinese-speaking children. 相似文献
16.
Deaf and hard-of-hearing (DHH) children's ability to rapidly learn novel words through direct reference and through novel mapping (i.e., inferring that a novel word refers to a novel object) was examined. Ninety-eight DHH children, ranging from 27 to 82 months old, drawn from 12 schools in five states participated. In two tasks that differed in how reference was established, word-learning abilities were measured by children's ability to learn novel words after only three exposures. Three levels of word-learning abilities were identified. Twelve children did not rapidly learn novel words. Thirty-six children learned novel words rapidly but only in the direct reference task. Forty-nine children learned novel words rapidly in both direct reference and novel mapping tasks. These levels of word-learning abilities were evident in children who were in oral-only and in signing environments, in children with cochlear implants, and in deaf children of deaf parents. Children's word-learning abilities were more strongly correlated to lexicon size than age, and this relation was similar for children in these different language-learning environments. Acquisition of these word-learning abilities seems based on linguistic mechanisms that are available to children in a wide range of linguistic environments. In addition, the word-learning tasks offer a promising dynamic assessment tool. 相似文献
17.
Nagore González-Martín Paz Suárez-Coalla Olivia Afonso Fernando Cuetos 《Infancia y Aprendizaje》2017,40(1):88-119
Several studies performed on deep orthography systems reveal variables that influence writing latencies that occur over the course of learning. In transparent orthographies such as Spanish there are very few studies on writing that measure latencies and duration. The aim of this present study was to take a more in-depth look at knowledge of the writing mechanisms used by Spanish children in primary education, by studying the errors, latencies and duration of the writing of words. To do this, sixty children performed a copying task and a dictation task with regular words of different frequency and length. The obtained results show changes in the writing mechanisms used by the children as they became more expert, as indicated by the greater effect of word length in the first years of primary. This word length effect is a more determining factor with regard to the number of letters in words than for the number of syllables. These results hold important implications for the teaching of writing in Spanish. 相似文献
18.
Donna Kotsopoulos Samantha Makosz Joanna Zambrzycka 《Early education and development》2017,28(8):925-938
Research Findings: In this research we explore the relationship between young children’s number knowledge and their measurement of length. First, we examined 4- to 5-year-olds’ (kindergartners’) understanding of and preference for using standard or nonstandard units to measure length. Second, we investigated whether the following tasks were related to children’s understanding of using standard (i.e., rulers) and nonstandard (i.e., blocks) units to measure length: (a) counting and written number identification knowledge, (b) symbolic or nonsymbolic number magnitude comparison ability, and (c) approximate number line estimation ability. Third, we examined whether understanding these number tasks predicted understanding how to measure length for both standard and nonstandard units. Our results show that young children prefer to use standard units of measurement when given a choice, and some of these children use a ruler correctly. Our results also show an important relationship between children’s understandings of numbers and measurement. Practice or Policy: Given children’s preference for rulers, introducing both nonstandard and standard units in early learning settings concurrently rather than consecutively is recommended for practice. 相似文献
19.
Morphological awareness in developmental dyslexia 总被引：5，自引：0，他引：5
This study examines morphological awareness in developmental dyslexia. While the poor phonological awareness of dyslexic children
has been related to their difficulty in handling the alphabetical principle, less is known about their morphological awareness,
which also plays an important part in reading development. The aim of this study was to analyze in more detail the implications
of the phonological impairments of dyslexics in dealing with larger units of language such as morphemes. First, the performance
of dyslexic children in a series of morphological tasks was compared with the performance of children matched on reading-level
and chronological age. In all the tasks, the dyslexic group performed below the chronological age control group, suggesting
that morphological awareness cannot be developed entirely independently of reading experience and/or phonological skills.
Comparisons with the reading-age control group indicated that, while the dyslexic children were poorer in the morphemic segmentation
tasks, they performed normally for their reading level in the sentence completion tasks. Furthermore, they produced more derived
words in the production task. This suggests that phonological impairments prevent the explicit segmentation of affixes while
allowing the development of productive morphological knowledge. A second study compared dyslexic subgroups defined by their
degree of phonological impairment. Our results suggest that dyslexics develop a certain type of morphological knowledge, which
they use as a compensatory reading strategy. 相似文献
20.
The purpose of this study was to determine whether poor readers have more pronounced problems than average-reading peers reading
derived words the base forms of which undergo a phonological shift when a suffix is added (i.e., shift relations as in “natural”),
as compared to derived words whose forms are phonologically and orthographically transparent (i.e., stable relations, as in
“cultural”). Two computer-based word recognition tasks (Naming and Lexical Decision) were administered to children with reading
disability (RD), peers with average reading ability, and adults. Across tasks, there was an effect for transparency (i.e.,
better performance on stable than shift words) for both child groups and the adults. For the children, a significant interaction
was found between group and word type. Specifically, on the naming task, there was an advantage for the stable words, and
this was most noteworthy for the children with RD. On the lexical decision task, trade-offs of speed and accuracy were evident
for the child reader groups. Performances on the nonwords showed the poor readers to be comparable to the average readers
in distinguishing legal and illegal nonwords; further analyses suggested that poor readers carried out deeper processing of
derived words than their average reading peers. Additional study is needed to explore the relation of orthographic and phonological
processing on poor readers’ memory for and processing of derived words. 相似文献