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1.
聋人与听力正常人图形视认知的比较与大脑左右半球功能不对称性的关系 总被引：2，自引：1，他引：1
本实验采用半视野速示法通过对聋人与听力正常人在三种视野条件下图形异同判断中选择反应时的比较 ,探讨了聋人与听力正常人大脑左右半球功能不对称性的特点。实验结果发现 :聋人在三种视野条件下的选择反应时都快于听力正常人 ,但差异均未在到显著性水平 ;聋人以双侧视野的平均反应时为最快 ,右视野的平均反应时最慢 ,听力正常人以右视野的平均反应时为最快 ,左视野的平均反应时最慢 ,但两类被试三种视野间的差异不显著 ;男性被试三种视野的选择反应时均快于女生被试相应视野的反应时 ,但性别间差异并不显著。 相似文献
2.
Two experiments explored the taxonomic organization of mental lexicons in deaf and hearing college students. Experiment 1 used a single-word association task to examine relations between categories and their members. Results indicated that both groups' lexical knowledge is similar in terms of overall organization, with associations between category names and exemplars stronger for hearing students; only the deaf students showed asymmetrical exemplar-category relations. Experiment 2 used verbal analogies to explore the application of taxonomic knowledge in an academically relevant task. Significant differences between deaf and hearing students were obtained for six types of analogies, although deaf students who were better readers displayed response patterns more like hearing students'. Hearing students' responses reflected their lexical organization; deaf students' did not. These findings implicate the interaction of word knowledge, world knowledge, and literacy skills, emphasizing the need to adapt instructional methods to student knowledge in educational contexts. 相似文献
3.
Blatto-Vallee G Kelly RR Gaustad MG Porter J Fonzi J 《Journal of deaf studies and deaf education》2007,12(4):432-448
This research examined the use of visual-spatial representation by deaf and hearing students while solving mathematical problems. The connection between spatial skills and success in mathematics performance has long been established in the literature. This study examined the distinction between visual-spatial "schematic" representations that encode the spatial relations described in a problem versus visual-spatial "pictorial" representations that encode only the visual appearance of the objects described in a problem. A total of 305 hearing (n = 156) and deaf (n = 149) participants from middle school, high school, and college participated in this study. At all educational levels, the hearing students performed significantly better in solving the mathematical problems compared to their deaf peers. Although the deaf baccalaureate students exhibited the highest performance of all the deaf participants, they only performed as well as the hearing middle school students who were the lowest scoring hearing group. Deaf students remained flat in their performance on the mathematical problem-solving task from middle school through the college associate degree level. The analysis of the students' problem representations showed that the hearing participants utilized visual-spatial schematic representation to a greater extent than did the deaf participants. However, the use of visual-spatial schematic representations was a stronger positive predictor of mathematical problem-solving performance for the deaf students. When deaf students' problem representation focused simply on the visual-spatial pictorial or iconic aspects of the mathematical problems, there was a negative predictive relationship with their problem-solving performance. On two measures of visual-spatial abilities, the hearing students in high school and college performed significantly better than their deaf peers. 相似文献
4.
In the present study, the effect of phonological and working memory mechanisms involved in spelling Italian single words was explored in two groups of children matched for grade level: a group of normally hearing children and a group of pre-verbally deaf children, with severe-to-profound hearing loss. Three-syllable and four-syllable familiar words were presented to the two groups for spelling to dictation. Three conditions were used: simple spelling, concurrent articulation, and foot tapping. Verbal digit span was also assessed. Overall, the performance of deaf children tended to be lower compared to hearing children, but not significantly so. Concurrent articulation produced more errors than tapping in both groups. Regression analyses showed that the main predictor in all three tasks was school level, however the proportion of variance explained by this factor was much greater in the dual tasks, in particular in concurrent articulation. Qualitative analyses of errors showed a worse performance of deaf children, with a greater proportion of mixed errors compared to hearing children. They also showed a greater proportion of phonologically plausible errors compared to hearing children, presumably due to their deprived auditory representation, and/or to phonological representations that rely to a large extent on lip reading and kinesthetic and visual perception of articulatory gestures. 相似文献
5.
A comparison was made between prelingually deaf and hearing children matched on reading age (between 7:0 and 7:11 years) in order to examine possible differences in reading performance. The deaf children all had a severe or profound hearing loss and were receiving special education in either a school or a unit for the deaf. The experimental tasks used a lexical decision task involving the reading of single words. The employment of phonology in reading was investigated by comparing reading performance on regular and irregular words and by comparing reading of homophonic versus non–homophonic nonwords. Both tasks revealed that hearing participants were much more affected by regularity and homophony, suggesting a much greater reliance on assembled phonological recoding. These results are discussed in terms of deaf readers relying on lexical access for reading print. 相似文献
6.
聋人和听力正常人对复杂图形信号辨认反应时和反应正确率的比较研究 总被引：3，自引：2，他引：1
本研究采用因素分析的方法研究聋人和听力正常人在快速和慢速两种呈现条件下对复杂视觉图形信号的认知绩效。结果表明 :( 1 )组别变量对视认知绩效的影响比较显著 ,聋人组的反应正确率较高而平均反应时却较长 ;( 2 )呈现速度变量对视认知绩效的影响十分显著 ,慢速呈现条件下的反应时较短 ;( 3 )正确反应时比错误反应时短。 相似文献
7.
The study examined the views of deaf and hard of hearing secondary-level students when asked about their preferences for deaf vs. hearing teachers. It also compared elementary- and secondary-level students' achievement scores based on the hearing status of their teachers. Deaf and hard of hearing secondary-level students showed greater preference for deaf teachers, with deaf students showing greater preference for deaf teachers than hard of hearing students did. No significant differences were found in the achievement levels of students based on differences in teacher hearing status. The study supports the limited research done in the past. 相似文献
8.
This article reports on an investigation of graphophonological processes in deaf readers of French over a 1-year period. Deaf readers are known to have a phonological deficit compared to hearing peers, and conclusions from studies on this question are often conflicting. Among the different types of phonological processing, we can identify graphophonological processes based on correspondences between the oral and the written language. In this investigation, we evaluated graphophonemic and graphosyllabic processes using, in each case, two different tasks varying in their degree of cognitive constraints (CC- vs. CC+). Nineteen 11 year-old deaf students were compared to younger normal readers of the same reading level (RA, n = 17) and to normal readers of the same age (CA, n = 20). Two variables were considered in the analyses: accuracy and response latency. Results show that deaf readers do process written items at the graphophonological level and that graphophonological processes are related to reading ability. Also, results indicate main effects of task (CC- vs. CC+), time (T1 vs. T2), and group. In general, deaf participants' performances are comparable to those of RA and differ from those of CA. Results are discussed within the framework of the study of phonology in deaf readers and its relation to reading acquisition. 相似文献
9.
Strategy usage among deaf and hearing readers 总被引：1，自引：0，他引：1
High school youths who were prelingually and profoundly deaf, hearing elementary-school-age youths, and hearing reading-disabled high school youths read expository texts and filled in deleted words and phrases. After making word replacements, they explained their decisions in sign or verbally. As expected, the hearing youths had an easier time filling in the deleted portions and explaining what strategies they were using. While the deaf youths reported using similar strategies as the hearing youths, the frequency of each type of strategy differed. Deaf readers more often relied on rereading and background knowledge, while the hearing readers made greater use of context clues. The results suggest that instruction for deaf readers should include more effective comprehension strategies. 相似文献
10.
The relationship between reading achievement and morphological word analysis in deaf and hearing students matched for reading level 总被引：1，自引：0，他引：1
This study extends the findings of Gaustad, Kelly, Payne, and Lylak (2002), which showed that deaf college students and hearing middle school students appeared to have approximately the same morphological knowledge and word segmentation skills. Because the average grade level reading abilities for the two groups of students were also similar, those research findings suggested that deaf students' morphological development was progressing as might be expected relative to reading level. This study further examined the specific relationship between morphologically based word identification skills and reading achievement levels, as well as differences in the error patterns of deaf and hearing readers. Comparison of performance between pairs of deaf college students and hearing middle school students matched for reading achievement level shows significant superiority of younger hearing participants for skills relating especially to the meaning of derivational morphemes and roots, and the segmentation of words containing multiple types of morphemes. Group subtest comparisons and item analysis comparisons of specific morpheme knowledge and word segmentation show clear differences in the morphographic skills of hearing middle school readers over deaf college students, even though they were matched and appear to read at the same grade levels, as measured by standardized tests. 相似文献
11.
This study examines a wide range of numerical representations (i.e., quantity, knowledge of multiplication facts, and use of parity information) in adult deaf signers. We introduce a modified version of the number bisection task, with sequential stimulus presentation, which allows for a systematic examination of mathematical skills in deaf individuals in different modalities (number signs in streaming video vs. Arabic digit displays). Reaction times and accuracy measures indicated that deaf signers make use of several representations simultaneously when bisecting number triplets, paralleling earlier findings in hearing individuals. Furthermore, some differences were obtained between the 2 display modalities, with effects being less prominent in the Arabic digit mode, suggesting that mathematical abilities in deaf signers should be assessed in their native sign language. 相似文献
12.
There has been limited research into the intersection of language and arithmetic performance of students who are deaf or hard of hearing, although previous research has shown that many of these students are delayed in both language acquisition and arithmetic performance. The researchers examined the performance on arithmetic word problems of deaf and hard of hearing students in the South-East Queensland region of Australia; they also examined these students' problem-solving strategies. It was found that performance on word problems was similar for deaf and hearing students, but that deaf students experienced delays in achieving successful performance on word problems relative to their hearing peers. The results confirm the findings of other studies showing that students who are deaf or hard of hearing experience delayed language acquisition, which affects their capacity to solve arithmetic word problems. The study conclusions stress the need for greater use of direct teaching of analytic and strategic approaches to arithmetic word problems. 相似文献
13.
In order to become expert readers of an alphabetical language like French, students must develop and adequately use phonological knowledge. Considering that the phonological knowledge used in reading largely comes from knowledge of the oral language, what happens when the oral language is not accessible, as is the case for many deaf children? In this study, graphophonemic and syllabic processes in pseudoword reading were assessed with a similarity judgment task. Gestual deaf subjects aged 10–18 years old (N = 24) were compared to 24 age-matched hearing subjects. The results show that deaf readers are less sensitive to the graphemic and the syllabic structures of pseudo-words than hearing readers. In deaf subjects, the results are different than chance-level in the 13–15 and the 16–18-year-old groups. These results indicate that gestual deaf readers can develop phonological knowledge even in settings where sign language is promoted. 相似文献
14.
Yi K Li D Park WS Park KH Shim TT Kwern O Kim JY 《Journal of deaf studies and deaf education》2011,16(3):375-391
Individuals' relative awareness of thematic and taxonomic relations is influenced by factors such as language and background knowledge. Relatively weak in Korean language skills and also having relatively limited social opportunities, Korean deaf adolescents might be different from hearing adolescents in how they make decisions in taxonomically and thematically associated entities represented by pictures and words. Experiment 1 indicated that deaf adolescents had longer reaction times than hearing adolescents in a forced-choice decision-making task. Both deaf and hearing adolescents had shorter reaction times and higher accuracies with pictures than with words, but deaf adolescents' differences were bigger than those of hearing adolescents. Experiment 2 further showed that deaf adolescents had lower accuracies than hearing adolescents in a priming task of living-nonliving categorization. Both deaf and hearing adolescents had shorter reaction times with taxonomic than with thematic categories, but deaf adolescents' difference was bigger than that of hearing adolescents. In conclusion, Korean deaf adolescents were aware of thematic and taxonomic relations less than hearing adolescents in general. They were more likely than hearing adolescents to show the advantage of pictures over words in their performance in conceptual activities and to prefer taxonomic to thematic associations for written words in Experiment 2. 相似文献
15.
聋人和听力正常人语言理解和生成的实验研究 总被引：9，自引：2，他引：7
本实验对聋人和听力正常人在语言理解和生成上的差异进行了比较。结果显示聋人虽然在书面语的输入输出条件下语言理解和生成的能力显著落后于听力正常人 ,但其在手语的输入、输出条件下语言理解和生成的能力与正常人的口语相比无显著差异 ,甚至在以形象思维为主的几项指标上成绩还略高于听力正常人。另外 ,本文在实验的基础上支持了聋校双语教学的主张 ,提倡使聋人在聋文化和听文化中成为自由生活的双语平衡者 相似文献
16.
Hyperlink format, categorization abilities and memory span as contributors to deaf users hypertext access 总被引：1，自引：0，他引：1
Fajardo I Farjardo I Arfé B Benedetti P Altoé G 《Journal of deaf studies and deaf education》2008,13(2):241-256
Sixty deaf and hearing students were asked to search for goods in a Hypertext Supermarket with either graphical or textual links of high typicality, frequency, and familiarity. Additionally, they performed a picture and word categorization task and two working memory span tasks (spatial and verbal). Results showed that deaf students were faster in graphical than in verbal hypertext when the number of visited pages per search trial was blocked. Regardless of stimuli format, accuracy differences between groups did not appear, although deaf students were slower than hearing students in both Web search and categorization tasks (graphical or verbal). No relation between the two tasks was found. Correlation analyses showed that deaf students with higher spatial span were faster in graphical Web search, but no correlations emerged between verbal span and verbal Web search. A hypothesis of different strategies used by the two groups for searching information in hypertext is formulated. It is suggested that deaf users use a visual-matching strategy more than a semantic approach to make navigation decisions. 相似文献
17.
《Journal of Experimental Education》2012,80(4):199-206
This study examined the effects of selected reader and task variables on reading comprehension performance. Fifty deaf students and 61 hearing students of comparable reading skill level were blocked by cognitive style scores into field dependent or field independent groups. Subjects read 12 passages and completed selected-response and constructed-response question tasks under both lookback and no-lookback conditions. The passage questions tapped both text-explicit and text-implicit information. Several reader and task interaction effects were found to be significant, particularly for lookback conditions and constructed-response tasks. Moreover, cognitive style interacted with hearing state on tasks involving lookback options. Implications are drawn for further consideration of differential test administration and training in test-taking skills for certain types of readers. 相似文献
18.
A sample of 34 deaf undergraduate college students at Gallaudet University and 46 hearing undergraduate college students at the University of Maryland Baltimore County completed a questionnaire that asked about their knowledge and sources of information concerning the human immunodeficiency virus and acquired immunodeficiency syndrome (HIV/AIDS). The deaf students had significantly lower scores on an "HIV/AIDS Knowledge Index" than the hearing students. This difference could not be explained by the deaf students' gender, class standing, family structure, or father's or mother's education level. The deaf students obtained more of their information about HIV/AIDS from family and friends than the hearing students, who relied to a greater extent on teachers, television, and reading material. The interpersonal sources used by the deaf students are more prone to factual errors than formal sources. Deaf students need methods of educating themselves about HIV/AIDS that are more accurate and that recognize the importance of sources as well as the content of information. 相似文献
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20.
听觉障碍学生与正常学生视觉识别敏度的比较研究 总被引：2，自引：5，他引：2
为了探讨听觉障碍学生和正常学生在视觉图形识别敏度上的差异,我们采用Dr.Hirsch.B.Helmut编制黑白与彩色测试卡设计了二维隐匿图形视觉搜索实验,结果表明:(1)学校、性别与正斜像之间的交互作用显著;不同学校男生对正斜像识别反应时呈现出不同的变化趋势,特别是聋校男生识别斜像的反应时明显低于普校男生;聋校中不同性别学生对正斜像识别反应时呈现不同变化趋势。(2)听障学生的视觉图像识别的敏度优于正常学生,说明了听障学生存在明显的视觉补偿作用。(3)视觉识别敏度不具有明显的性别差异。(4)听障学生和正常学生的心理旋转能力不存在显著差异。 相似文献