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11.
Jonathan R. Brown 《Psychology in the schools》1992,29(2):179-184
Meta-analysis is an analysis of analyses. It is a technique widely used by researchers and practitioners to aggregate and summarize statistically reported empirical educational research. In 10 years, meta-analysis appeared more than 600 times in research journals and dissertation abstracts. Although most meta-analyses were reported as significant, few of the findings determined how many unpublished “no-effect” studies, if sampled, would have invalidated significance. If significant meta-analysis results are over represented through selective sampling, hucksterism in the form of sampling bias exists. An explanation for using a follow-up test called the fail-safe N is provided with tables constructed to assist researchers and practitioners to estimate, without calculation, the relative stability of meta-analysis results. The implication is that failsafe N should routinely be used and reported in meta-analysis research. 相似文献
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Jonathan Sandoval 《Psychology in the schools》1982,19(3):310-314
Light's Retention Scale totals, along with measures of reading achievement, mathematics achievement, and self-concept taken at the time first grade nonpromotion was being considered, were used to predict nine separate outcome measures of academic, emotional, and social status at the end of the repeated first grade. In none of the stepwise regressions did the Light total add to the prediction of outcome in the children repeating the first grade. This result, added to earlier studies, suggests that Light's Retention Scale is neither reliable nor valid as a psychometric device. 相似文献
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Jonathan Reinarz 《Cultural and Social History》2016,13(2):267-269
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Jonathan Wild 《Cultural and Social History》2013,10(1):73-94
ABSTRACTThis article traces the profound social repercussions that resulted from the mass enlistment of British office workers into the armed forces during the First World War. Drawing heavily upon fictionalized autobiographies of the period, my study examines the various stages of the clerk's experience of the conflict and argues that the confidence gained during warfare by surviving office workers fundamentally shaped a more democratic postwar society. This change is evidenced, I argue, in the profile of the fictional clerk that emerges in British literature after 1918. 相似文献
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John P. Cooper 《Al-Masaq: Islam & the Medieval Mediterranean》2012,24(1):53-73
By the fourth/tenth century, Egypt's Nile Delta had just two major Delta branches debouching directly into the Mediterranean – the Dumyā? (Damietta) and Rashīd (Rosetta). Navigational conditions at these branches’ mouths were treacherous because of a combination of currents, winds, wave-fields and shifting sandbanks. These conditions were a danger to shipping, and so had a formative effect on the navigational landscape of the Delta. Despite its remoteness from the Nile, Alexandria remained Egypt's chief Mediterranean port, but only because river connections were maintained that avoided the Rashīd mouth. In contrast, the port of Rashīd was relatively insignificant. Similar conditions at the Dumyā? mouth prompted navigators to adopt routes via Lake Tinnīs, modern Lake Manzala, which linked to the sea through its calmer sea mouths. This article brings together material from multiple disciplines to offer a new understanding of the navigational context of Egypt's medieval Mediterranean ports. 相似文献