Summation and overexpectation with qualitatively different outcomes

In five experiments, a Pavlovian appetitive conditioning preparation was used with rats to explore the interaction of associations with different, but equivalently valued, outcomes. Experiment 1 demonstrated summation in magazine responding when two stimuli previously associated with different outcomes were combined. Experiments 2A and 2B found that pairing that stimulus compound with one of the outcomes led to a decrease in performance (overexpectation) for both of the stimulus elements. Experiments 3A and 3B confirmed that result but demonstrated the continued presence of the original stimulus-outcome associations. The results are consonant with a view in which replacing one outcome with another leads to an associative structure containing both stimulus-outcome associations and an outcome-independent depressive process.     

Perceptions of the Future of Cataloging: Is the Sky Really Falling?

Cataloging procedures have evolved in many academic research libraries over the past 10 years. Some predicted trends—outsourcing, original cataloging by paraprofessionals, more digital material—have been borne out. Others, such as a decline in the amount of material to catalog or in the number of professional catalogers, have not. Changes have been mostly procedural and have not affected the catalog itself. Recently, however, the emergence of powerful Internet search engines has allowed researchers to bypass the catalog. This has led some to question the wisdom of continuing it and others to vigorously defend current practice. In 2005–2007 this debate became especially heated, but a consensus appears to be emerging that although the character of the professional cataloger's job will continue to evolve over the next 5 to 10 years there will not be a revolution. The cataloger's basic skills will still be needed and the fundamental nature of cataloging will remain much as we know it.     

非形式逻辑与演绎主义

非形式逻辑出现于上个世纪70年代,它首先是一种寻求更好的大学逻辑教学方式的努力.进而,非形式逻辑学者们逐渐开始触及和探讨越来越多的理论议题,即发展不依赖于形式逻辑的关于论证以及好论证的理解方式.在1998年世界哲学大会上,布莱尔和我阐释了非形式逻辑为哲学所带来的理论后果,其中一点我们称之为"演绎主义的终结".那时我们并未给出演绎主义的定义,而只是把它等同于麦金泰尔的那个精炼的说法:"任何推理,不是演绎的,就是有缺陷的."但现在看来,我们在当时就作出"演绎主义的终结"这一论断,显然是有点为时过早了.因为演绎主义似乎至今都还很有生命力,甚至在那些倾向于非形式逻辑的学者那里它也能得到支持:恩尼斯长期以来都辩护演绎主义是一种论证重构策略,格罗尔克更是致力于辩护它是一种论证评价理论.在本文中我将论证,非形式逻辑最好被理解为一种不诉诸于演绎技巧和演绎规范的逻辑研究.当我们意识到演绎和演绎主义已经如何深深地扎根于我们的哲学发展史中,并且牢牢地控制了我们关于逻辑研究的理解,我们就能明白非形式逻辑这一理论努力是多么的困难和重要.我将首先澄清"演绎主义"的意思,然后再分别考察那些赞成和反对演绎主义的论证,最后,我将表明非形式逻辑是从演绎主义中挽救逻辑的理论尝试.     

The Consistency of Detecting Item Bias Across Different Test Administrations: Implications of Another Failure

Several item bias detection methods were applied to the analysis of bias among males and females for items from a curriculum-based mathematics test. The focus of this analysis was the consistency of the methods across different test administrations of the same items. The results indicated that, of the methods studied, the Mantel–Haenszel (M–H) and IRT-based sum-of-squares methods were the most consistent. However, the degree of reliability and agreement for these methods was modest at best. As with most prior research, no reasonable explanation could be found for the most consistently flagged items. A likely reason for this lies in the confusion of visible genetic group characteristics with their instructional backgrounds. A multidimensional perspective of item bias is proposed for future research that will take such confounding into account.     

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.