Risk Assessment and Decision-Making for Genetically Modified Foods

The author examines concerns about genetically modified foods and how those concerns have developed into policy responses markedly different in Europe than in the United States

Exploratory Factor Analysis in Two Measurement Journals: Hegemony by Default

Exploratory factor analysis studies in two prominent measurement journals were explored. Issues addressed were: (a) factor extraction methods, (b) factor retention rules, (c) factor rotation strategies, and (d) saliency criteria for including variables. Many authors continue to use principal components extraction, orthogonal (varimax) rotation, and retain factors with eigenvalues greater than 1.0

Indentured Servitude in Eighteenth-Century Maryland

This study of the role of indentured servitude in late colonial Maryland offers a new perspective on the transformation of its labour force from white servants to African slaves. Based on contemporary legislation, correspondence and periodicals, it argues that increased economic stratification, consequent in part on the introduction of a self-perpetuating workforce on the large plantations, slowed the transition to slavery in the early eighteenth century. Among smaller planters too poor to buy slaves, the demand for relatively unskilled white servants persisted throughout the colonial period. Cette étude du rôle des engagés au Maryland à la fin de la période coloniale offre une perspective nouvelle de la transformation de la force de travail dans cette colonie. La législation, la correspondance et les périodiques de l’époque suggèrent que la stratification économique résultant en partie du remplacement des engagés par les esclaves sur les grandes plantations a ralenti cette transformation de la main-d’oeuvre coloniale au XVIIIe siècle. Ne pouvant prendre le même avantage d’une main-d’oeuvre servile capable de se reproduire, les petits planteurs continuèrent tout au long de la période coloniale d’avoir recours aux engagés blancs peu qualifiés

Transcript of The Quality of Life in Pacific City

This story is an excerpt from a longer interview that was collected as part of the Launching through the Surf: The Dory Fleet of Pacific City project. In this story, Ron Kellow discusses the history of his family in the area and describes the quality of life offered by Pacific City

Do the digestive tract symptoms in eating disorder patients represent functional gastrointestinal disorders?

BACKGROUND: Gastrointestinal (GI) symptoms are common in patients with eating disorders. The aim of this study was to determine, using factor analysis, whether these GI symptom factors (clusters) in eating disorder patients hold true to the Rome II classification of functional gastrointestinal disorders (FGIDs). METHODS: Inpatients in a specialised eating disorder unit completed the Rome II questionnaire. Data from 185 patients were analysed using factor analysis of 17 questions cited as present in 30% to 70% of the patients. RESULTS: Five factors emerged accounting for 68% of the variance and these were termed: ‘oesophageal discomfort’, ‘bowel dysfunction’, ‘abdominal discomfort’, ‘pelvic floor dysfunction’, and ‘self-induced vomiting’. These factors are significantly related to the Rome II FGID categories of functional oesophageal, bowel and anorectal disorders, and to the specific FGIDs of IBS, functional abdominal bloating, functional constipation and pelvic floor dyssynergia. Both heartburn and chest pain were included in the oesophageal discomfort factor. The ‘pelvic floor dysfunction’ factor was distinct from functional constipation. CONCLUSIONS: The GI symptoms common in eating disorder patients very likely represent the same FGIDs that occur in non-ED patients. Symptoms of pelvic floor dysfunction in the absence of functional constipation, however, are prominent in eating disorder patients. Further investigation of the items comprising the ‘pelvic floor dysfunction’ factor in other patient populations may yield useful results

Consequences of (mis)use of the Texas Assessment of Academic Skills (TAAS) for high-stakes decisions: A comment on Haney and the Texas miracle in education

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