Impaired visual attention in children with dyslexia

Reading involves the correct and rapid identification of visual stimuli with letters and words. The processing of visual stimuli depends not only on the integrity of the peripheral and central visual system but also on the attentional systems involved. In the present study, a cue-target visual attention task was administered to a population-based sample of 25 children with dyslexia from 10 to 12 years of age. A control group matched for group size, age, and gender was obtained from the same general population. A two-stage screening process involved a spelling task of regular words followed by a battery of five single-word reading tasks. The cue-target task involved both a computer-controlled stimulus presentation and a computer-controlled measurement of reaction time. The data were analyzed by visual field, cue condition (valid, invalid, and no cue), and cue-target interval (CTI). The results showed a general pattern of slower responses in the dyslexia group compared to the control group. The dyslexia group also had longer reaction times in the short CTI condition (covert shift of attention) and in the long CTI condition (overt shift of attention). The findings may reflect a general attentional deficit to visual stimuli in dyslexia, possibly related to problems with the recruitment of necessary cognitive resources for the performance of complex reaction time tasks and for fluent reading.     

A closer look at split visual attention in system- and self-paced instruction in multimedia learning

Two experiments examined visual attention distribution in learning from text and pictures. Participants watched a 16-step multimedia instruction on the formation of lightning. In Experiment 1 (N = 90) the instruction was system-paced (fast, medium, slow pace), while it was self-paced in Experiment 2 (N = 31). In both experiments the text modality was varied (written, spoken). During learning, the participants’ eye movements were recorded. Results from both experiments revealed that learners spent more time studying the visualizations with spoken text than those with written text. In written text conditions learners consistently started reading before alternating between text and visualization; moreover, they spent more time reading the text than inspecting the visualizations. While in Experiment 1 additional time that was made available in conditions with a slow or medium instruction pace was spent inspecting visualizations, in Experiment 2 longer learning times resulted from reading the text more intensively. With respect to learning outcomes (retention, transfer, and visual memory) Experiment 1 revealed an effect of text modality for visual memory only. In Experiment 2 no modality effects were found. Instruction pace was hardly related to learning outcomes. Overall, the results confirm prior findings suggesting that the distribution of visual attention in multimedia learning is largely guided by the text.     

Interstimulus interval and viewing time effects in monkey list memory

Two rhesus monkeys were tested in 6- and 10-item list memory tasks for performance changes as a function of the exposure duration of the list stimuli and the interstimulus interval (ISI) between successive list stimuli. Accuracy increased with longer item exposure duration and tended to decrease with longer ISI duration. Humans, by contrast, typically show increases in accuracy with ISI, a result taken as evidence of rehearsal. The decrease in accuracy for monkeys suggests that they were not using rehearsal processes in these list memory experiments. Further tests in which choice accuracy with predictable ISIs was compared with choice accuracy with unpredictable ISIs also yielded no evidence of rehearsal by the monkeys. This apparent absence of rehearsal mechanisms in monkeys, in situations also shown to support human rehearsal, is discussed as a potential difference in the visual working memory processes of the two species.     

Infant visual attention in the paired-comparison paradigm: test-retest and attention-performance relations

The visual behavior of infants in the paired-comparison paradigm was assessed with multiple discrimination tasks week-to-week at 4 and 7 months and longitudinally from 4 to 7 months. Results indicated that although task-to-task reliability was extremely variable and typically low, most measures of infants' attention averaged across multiple tasks were reliable from 1 week to the next as well as relatively stable over the longer longitudinal period. Across all groups, infants who had shorter fixations (i.e., more fixations per fixed-exposure period) during the familiarization phase showed higher novelty preferences. While infants' shift rate during test phases was a reliable individual characteristic at 7 months, it was not at 4 months; rather, data suggested that the difficulty of the stimulus discrimination may be related to young infants' shift rate.     

Watching People Watching Television: what goes on in front of the TV set?

This paper reports an observational study of families watching television in their own homes. Observational data were collected via a video camera housed within a special television cabinet placed in six family households. Results show that family members were absent for substantial proportions of the time the television set was in operation, and even when present did not pay full attention to the screen for more than a minority proportion of that time. Families and family members varied significantly in respect of certain patterns of television watching, but were similar in other respects. The results have implications for understanding the nature of television viewing in the natural viewing environment. Recommendations are offered for further analysis of these data.     

The effects of age of viewer and gender of the narrator on children's visual attention and recall of story ideas

The purpose of this study was to investigate the effects of the age of viewers and the gender of the narrator in a film, and to examine the interaction between these two variables. Subjects in second and fifth grades were randomly assigned to two treatment groups. One group watched a film narrated by a female and the other watched the same film narrated by a male. As subjects watched the film, the experimenters measured their visual attention to the program. Recall of story ideas was also measured, using a multiple-choice test. The results indicated that the gender of the narrator influenced the recall of second-graders, but did not influence the recall of fifth-graders. Results suggest that older children pay greater visual attention to a program than younger children. Implications for developing audio-visual materials for children are discussed.     

Integrating Research into Television Production: Square One TV and the case of “Pauline”

Within the field of formative research, there is debate as to whether researchers should collaborate with producers or serve as independent evaluators. The Children's Television Workshop (CTW) produces educational programs through a collaborative process of development that has come to be known as the “CTW Model”. Under the CTW Model, producers, content specialists, and researchers work together throughout the life of a project, from its initial conceptualization through its final production. This paper illustrates the value of the CTW Model via an in‐depth case study of the development and production of a single repeated format within Square One TV, an educational television series about mathematics. In particular, we focus on the multifaceted role played by formative research at all stages of production.     

Learning at home with information and communication technologies

Digitisation and the convergence of computing and telecommunications have led to a range of information and communication technologies (ICT) that have the potential to transform education. ICT are being used by teachers and learners in conventional universities and colleges as well as in tertiary institutions that serve the needs of distance learners, be they home‐based or in some other off‐campus location. They can enable distance learners to receive and interact with educational materials and resources and to engage with teachers and peers in ways that previously may have been impossible. However, the domestic contexts within which home‐based learners undertake their studies are complex and highly varied and these circumstances impact upon the educational process (Kirkwood 1995).

There is a need to examine not only the nature of the relationships between learners and the technologies, but also the social relationships within the domestic setting. It is important for course designers and developers to consider issues of access to ICT ‐ both quantitative and qualitative ‐ in the homes of their target student audience in order to develop a better understanding of their learners. Significant disparities in access exist, both within and between countries, and these can exacerbate existing educational advantages and inequities. Greater awareness of the diverse environments within which home‐based learning takes place should help inform the planning and design of courses and materials that are appropriate for such varied contexts.     

The influence of children's gender and age on children's use of digital media at home

This study is the first to systematically investigate the influence of child gender and age, on parents’ perceptions of UK children's digital media use at home. It provides an in‐depth exploration of how children's age and gender influence the balance between children's use of digital and non‐digital media at home. The data draw on 709 parents’ responses to an open‐ended question asked in the context of a national survey investigating the digital reading habits of children, conducted in 2015. Parents’ responses were analysed using content and thematic analysis, which yielded eight main categories, collapsed into three major themes: control, child's healthy development and diversity of experiences. Quantitative analyses evidenced that more parents of boys were concerned about the health implications of their children's digital media use and this was a concern especially for parents of the youngest (0–2‐year‐old) children. More parents of 6–8‐year olds cited the appeal of technology as the main reason for the perceived imbalance in their children's engagement with digital media. The study provides a more secure understanding of the factors that influence parental perceptions of their children's digital media use at home, which has implications for policy‐makers, digital designers and early years professionals.     

视觉艺术中的时空再现

以影像文化为视觉的传播单位,突破地域语言等文化差异的限制,与观者进行瞬间的情报处理,是视觉艺术的重要特征。本文从由静态图形向动态影像的变化,调动接受者的行动并参与创造,从封闭的知识向开放性思考变化三个方面阐述了:视觉艺术具有变动的时空相貌、运动的时空联系,快速的时空传播速度,无限的时空发展潜能。     

Role of visual attention in cognitive control of oculomotor readiness in students with reading disabilities

This study investigated eye movement and comprehension therapy in Grade 6 children with reading disabilities (RD). Both order of therapy and type of therapy were examined. Furthermore, the implications of visual attention in ameliorating reading disability are discussed. Thirty-one students with RD were identified using standardized reading comprehension tests. Eye movements were analyzed objectively using an infra-red recording device. Reading scores of participating children were 0.5 to 1 SD below the national mean. Testing took place before the start of therapy (T1) and was repeated after 12 weeks (T2) and 24 weeks (T3) of therapy. One group of students had eye movement therapy first, followed by comprehension therapy; in the other group, the order was reversed. Data were evaluated using a repeated measures MANOVA and post hoc tests. At T1, mean reading grade was 2 years below grade level, and eye movement scores were at about Grade 2 level. Mean growth in reading comprehension for the total sample was 2.6 years (p < .01) at T3; equally significant improvement was measured in eye movements (p < .01). Learning rate in reading comprehension improved from 60% (T1) to 400% (T3). Although within-group differences were statistically significant, between-group differences were not significant for comprehension or eye movements. Order of therapy (comprehension first or eye movements first) was not significant. Improvements in within-group scores for comprehension and eye movements were consistently significant at T2 and T3. Eye movement therapy improved eye movements and also resulted in significant gains in reading comprehension. Comprehension therapy likewise produced improvement both in eye movement efficiency and in reading comprehension. The results support the notion of a cognitive link among visual attention, oculomotor readiness, and reading comprehension.     

Visual and cognitive processes contribute to age-related improvements in visual selective attention

Children (N = 103, 4–9 years, 59 females, 84% White, c. 2019) completed visual processing, visual feature integration (color, luminance, motion), and visual search tasks. Contrast sensitivity and feature search improved with age similarly for luminance and color-defined targets. Incidental feature integration improved more with age for color-motion than luminance-motion. Individual differences in feature search ( = .11) and incidental feature integration ( $$ = .06) mediated age-related changes in conjunction visual search, an index of visual selective attention. These findings suggest that visual selective attention is best conceptualized as a series of developmental trajectories, within an individual, that vary by an object's defining features. These data have implications for design of educational and interventional strategies intended to maximize attention for learning and memory.     

荧屏“东北风”与区域文化电视传播

二人转表演艺术的“活性”应变能力,使它能够在对“原生”的保护传承中,释放出超越的潜能;二人转“活化”的兼容特点,使它可以在对未来的“再生”创新发展中,表现出洒脱的品性。“东北风”所以能够形成,是因为它的内涵适应了不确定性变化过程中的所有变化;东北区域文化之所以能够形成电视文化传播的热门景象,是因为二人转表演艺术契合了电视传播所营造的特殊语境。     

Time limits in testing: An analysis of eye movements and visual attention in spatial problem solving

Individuals with an aptitude for interpreting spatial information (high mental rotation ability: HMRA) typically master anatomy with more ease, and more quickly, than those with low mental rotation ability (LMRA). This article explores how visual attention differs with time limits on spatial reasoning tests. Participants were assorted to two groups based on their mental rotation ability scores and their eye movements were collected during these tests. Analysis of salience during testing revealed similarities between MRA groups in untimed conditions but significant differences between the groups in the timed one. Question‐by‐question analyses demonstrate that HMRA individuals were more consistent across the two timing conditions (κ = 0.25), than the LMRA (κ = 0.013). It is clear that the groups respond to time limits differently and their apprehension of images during spatial problem solving differs significantly. Without time restrictions, salience analysis suggests LMRA individuals attended to similar aspects of the images as HMRA and their test scores rose concomitantly. Under timed conditions however, LMRA diverge from HMRA attention patterns, adopting inflexible approaches to visual search and attaining lower test scores. With this in mind, anatomical educators may wish to revisit some evaluations and teaching approaches in their own practice. Although examinations need to evaluate understanding of anatomical relationships, the addition of time limits may induce an unforeseen interaction of spatial reasoning and anatomical knowledge. Anat Sci Educ 10: 528–537. © 2017 American Association of Anatomists.     

TV,technology, and McCarthyism: crafting the democratic renaissance in an age of fear

One of the most watched political events in the United States at mid‐century, the Army‐McCarthy hearings coincided with the early period of the reception and evaluation of television as a force in society. Although optimistic rhetoric often attends the rise of new technologies, worries and fears about the power of television pervaded coverage of the hearings. The popular press expressed concern that Edward R. Murrow and Joseph McCarthy exercised unrivaled control over television viewers. Murrow and McCarthy became condensation symbols in a new struggle over control of the airwaves, and their highly publicized standoff established discursive rules for thinking about the power of audiences, journalists, and politicians.