The development of self-regulation in the first four years of life

This study examined longitudinally the development of self-regulation in 108 young children during the first 4 years of life. Children's committed compliance (when they eagerly embraced maternal agenda) and situational compliance (when they cooperated, but without a sincere commitment) were studied. Both forms of compliance were observed in "Do" contexts, in which the mothers requested that the children sustain unpleasant, tedious behavior, and in "Don't" contexts, in which they requested that the children suppress pleasant, attractive behavior. Children's internalization while alone in the similar contexts was also studied. Parallel assessments were conducted when the children were 14, 22, 33, and 45 months of age. At all ages, the Do context was much more challenging for children than the Don't context. Girls surpassed boys in committed compliance. Both forms of compliance were longitudinally stable, but only within a given context. Children's fearfulness and effortful control, observed and mother reported, correlated positively with committed compliance, but mostly in the Don't context. Committed, but not situational, compliance was linked to children's internalization of maternal rules, observed when the children were alone in the Do and Don't contexts. These links were both concurrent and longitudinal, context specific, and significant even after controlling for maternal power assertion. There was modest preliminary evidence that committed compliance may generalize to interactions with adults other than the mother.     

THE IMPACT OF FORMATIVE AND SUMMATIVE EVALUATION OF TEACHING IN NORTH AMERICAN UNIVERSITIES

This paper reviews recent research evidence on formative (developmental) and summative (judgemental) evaluation of teaching in North American universities. The major conclusions of the review are as follows: (1) student ratings are the most common method of evaluating teaching in North American universities, and their popularity appears to be increasing; (2) student ratings have been found to provide reliable and valid information on limited aspects of teaching competence; (3) teaching evaluations make a difference in decisions on faculty salary, tenure and promotion; (4) evaluation of teaching has been shown to produce modest improvements in teaching effectiveness; (5) faculty satisfaction with teaching evaluation practices ranges from very high to very low, depending on institutional context; and (6) there is consensus that several specific improvements are needed in the current teaching evaluation system.     

Towards the re‐articulation of the work of teacher educators in Higher Education institutions in England

In recent years, teacher educators in the Netherlands and the USA have developed professional standards for their occupational groups. These standards have been used to identify the professional expertise of teacher educators, to analyse their professional development needs, and to provide assessment mechanisms for accreditation. This article begins by outlining the impact of changes in pre‐service work on teacher educators' work in England and arguing that a re‐articulation of the work of this occupational group is needed. It then analyses the Dutch and American initiatives, and, drawing on discussions at the Association for Teacher Educators in Europe conference in 2005, debates the potential and relevance of drawing on these models for developing a similar framework with teacher educators in England. The article concludes that, whilst developing rigidly defined standards would be inappropriate, considering the intra‐professional development of a broad professional framework would facilitate the identification and understanding of teacher educators' complex work, and provide a springboard for providing enhanced induction and professional development opportunities.

Ces dernières années, les formateurs d'enseignants aux Pays‐Bas et aux Etats‐Unis ont mis au point des critères de compétence pour leur corps professionnel. Ces critères ont été utilisés pour identifier l'expertise professionnelle des formateurs d'enseignants, analyser leurs besoins en matière de développement professionnel, et permettre d'établir des mécanismes d'évaluation de leurs compétences afin de les accréditer. Cet article débute par une analyse des initiatives hollandaise et américaine. S'inspirant des discussions qui ont eu lieu à la conférence de l'ATEE de 2005, il se poursuit par un débat sur le potentiel et la pertinence d' élaborer à partir de ces deux modèles une structure semblable pour les formateurs d'enseignants d' Angleterre. L'article conclut que, tout en reconnaissant qu'il serait inapproprié d'établir des critères rigidement définis, l'existence d'une structure générale de critères professionnels permettrait de mieux identifier et de mieux comprendre le travail complexe des formateurs d'enseignants, et fournirait une base pour un meilleur système d'intégration et de developpement professionnel.

In letzter Zeit haben Lehrerausbilder in Holland und der Vereinigte Staaten berufliche Normen für ihre Berufsgruppe entwickelt. Diese Normen sind um die Fachkenntniss der Lehrerausbilder zu feststellen, die Bedarfe ihre berufliche Weiterbildung zu analysieren und um die Beurteilungsmethode der Zulassung zu versehen benutzt worden. Dieser Artikel fängt mit einer Untersuchung den holländischen und amerikanischen Iniativen an. Sie zieht an Gespräche der Association for Teacher Educators in Europe Konferenz 2005 heran, und berät das Potenzial und die Bedeutung die Benutzung der zwei Ausfuhrung um ein ähnliches System mit Lehrerausbildern in England zu entwickeln. Die Artikel kommt zum Schluss dass, obwohl klar abgegrenzt Normen zu entwickeln wäre ungeeignet, der Betracht der Entwicklung eines breiten beruflichen System würde die Erkennung und das Verstandnis der kompliziert Arbeit des Lehrerausbilder ermöglichen und ein Sprungbett für die Besorgung eine erweiterte Einleitung und berufliche Weiterbildung Möglichkeiten anbieten.

En los últimos años, los formadores de profesores de Holanda y EE.UU han creado normas profesionales para sus grupos ocupacionales. Esas normas se utilizan para identificar la cualificación profesional de los formadores de profesores, así como para analizar sus necesidades de desarrollo profesional, y proporcionar mecanismos de evaluación para la acreditación. Este artículo comienza analizando las iniciativas holandesa y estadounidense. Tomando como punto de partida los debates que tuvieron lugar en la Conferencia de la Asociación para la Formación del Profesorado en Europa (ATEE, por su sigla en inglés), celebrada en 2005, el artículo discute las posibilidades y la importancia de usar esos modelos con vistas a crear un marco similar para los formadores de profesores en Inglaterra. El artículo concluye que, mientras la creación de normas definidas rígidamente sería inadecuada, la creación de un amplio marco profesional facilitaría la identificación y la comprensión del complejo trabajo que realizan los formadores de profesores, además de servir de trampolín para proporcionar integración y oportunidades de desarrollo profesional.     

无水乙醇夹带剂超临界CO2萃取荔枝核

以无水乙醇为夹带剂,采用超临界CO2萃取荔枝核,并用气相色谱．质谱联用仪（GC—MS）对荔枝核萃取物的挥发性成分进行了分析．结果表明,以无水乙醇为夹带剂超临界CO2萃取荔枝核的萃取率为5．47％,GC—MS鉴定出32种化合物,主要为甾醇类、萜类、不饱和脂肪酸、棕榈酸、脂肪酸酯、芳香醇,相对质量分数分别为38．8％,26.4％,8．60％,7．54％,8．44％,6．11％．和无夹带剂相比,夹带剂无水乙醇可以提高荔枝核的超临界萃取率．     

Location preference and flavor aversion reinforced by amphetamine in rats

To associate the identical drug state with both a location and a flavor, rats were given intraperitoneal amphetamine injections and then confined for 20 min in one side of a shuttlebox with access to a flavored solution; on control trials without injections, they were confined for 20 min in the opposite side with a different flavor. In the first experiment, the rats were placed in the shuttlebox immediately after injections; in the second experiment, they were placed in the shuttlebox 20 min after injections. Subsequent free-choice tests in both experiments revealed an increased choice of the side of the shuttlebox associated with amphetamine but also an aversion to the flavored solution associated with the drug.