An overview of content accessibility issues experienced by educational publishers

Key points

• Educational accessibility needs to accommodate not only text but also supplemental, multimedia, and interactive elements.
• Accessibility considerations need to address user needs for timeliness, quality, cost, and security.
• Schools often default to remediation instead of embracing EPUB 3 for practical reasons and to respond to student preferences.
• PDF is often preferred over EPUB for creating alternate formats because of familiarity and expediency.
• Schools require accessibility to deal with increased legal pressure from both government agencies and disability advocates.

     

The effects of signaling the US in backward conditioning: A shift from excitatory to inhibitory learning

The associative effects of “backward” US-CS pairings were compared when the pairing occasions were either consistently preceded by a well-trained CS+ or were unannounced. The investigation employed a conditioned emotional response procedure with rats, under conditions in which all subjects received the same schedule of shock USs, some signaled and others not, and the back-ward CS was arranged to follow either the former or the latter, in separate groups. The major finding was that although the backward CS became excitatory when it followed unsignaled USs, it became inhibitory when it followed signaled USs. This outcome, which is in line with prior findings of Wagner and Terry (1975), is in accordance with a “sometimes-opponent-process” model proposed by Wagner (1981). It is contrary to data reported by Fowler, Kleiman, and Lysle (1984) that may have resulted from a confounding of the different circumstances of backward conditioning with differences in the predictability of the US in the experimental context.     

国际合作中的职教师资培养策略体系研究

分析了当前我国师资培养的基本模式,从中德合作上海同济大学职教师资培养项目的实践出发,提出适合我国职教师资队伍建设的新的策略体系,即加强实践教育、培养综合能力、强化培训基地建设、构建有特色的课程体系.     

Chronic Absenteeism and Preschool Children's Executive Functioning Skills Development

ABSTRACT

Investments in preschool programs for children from disadvantaged backgrounds have historically been supported by research showing that these programs help children build school readiness skills and narrow the income-achievement gap. However, results from recent studies of the links between preschool participation and increases in school readiness skills are more mixed. Significant variation in regular preschool attendance and the availability of high-quality early learning environments could help explain mixed findings on preschool effectiveness. Using data from a preschool expansion demonstration project, we explored associations between children's attendance rates, classroom quality, and neighborhood poverty and children's fall to spring gains in a set of important school readiness skills in executive functioning. Children (N = 197) lived in neighborhoods where 26% of households (range = 0 – 92%) lived below the poverty line and attended 48 classrooms in public and private settings. Attendance rates, including chronic absenteeism, were significantly associated with children's gains in executive functioning skills, but only when children attended high-quality classrooms. Results suggest that efforts to increase attendance rates may benefit children's executive functioning skills among children living in higher poverty neighborhoods the most when communities also invest in increasing preschool classroom quality.     

A bowed serial-position function in habituation of sequential stimuli

The effect of serial position was examined in a study of habituation of the vasoconstrictive orienting response in rabbits. In a procedure analogous to a recognition memory test, subjects received multiple exposures to an invariant list of stimuli before their response was assessed to an isolated item that had consistently occupied either the first, middle, or last position in the list. A reliably bowed serial-position function was obtained, with the least habituation (poorest retention) occurring for the item that had occupied the middle position in the list. The finding of both a primacy and a recency effect parallels the most general finding in studies of human memory and encourages a compatible account of habituation in infrahuman subjects. The result was discussed in terms of the opportunities for differential rehearsal of list items and contextual cues at different positions in the list.