Pigeons’ serial ordering of numerosity with visual arrays     

Jacky Emmerton  Annette Lohmann  Joachim Niemann 《Learning & behavior》1997,25(2):234-244

Pigeons were trained in a conditional discrimination paradigm to differentiate successively presented visual arrays according to the relative number of their elements. Transfer tests with novel stimuli demonstrated that they discriminated the categories of “many” (6 or 7) from “few” (1 or 2) items. In further tests, other new stimuli were introduced that consisted not only of these training numerosities, but also of the intervening ones (3, 4, and 5). Variations in the birds’ discrimination performance corresponded to the order of stimuli on a numerosity dimension. This serial ordering was maintained when other factors such as brightness, size, shape, area, and contour of the elements were systematically controlled across tests. Smaller numerosities were somewhat better discriminated than those at the higher end of this test range.  相似文献   

Language and Williams Syndrome: How Intact Is "Intact"?   总被引：2，自引：0，他引：2  

Annette Karmiloff-Smith  Julia Grant  Ioanna Berthoud  Mark Davies  Patricia Howlin  Orlee Udwin 《Child development》1997,68(2):246-262

It has been claimed that Williams syndrome (WS), a rare neurodevelopmental disorder, is characterized by serious cognitive deficits alongside intact language. The syndrome is often used as a prime example of the modularity of an innate faculty for morphosyntactic rules. We challenge this claim and hypothesize that morphosyntax, although surprisingly good given WS level of mental retardation, is by no means intact. We make an initial test of this hypothesis through an analysis of the receptive language of a group of English-speaking WS individuals on a standardized morphosyntactic test. We then present an experimental study of expressive language that examines grammatical gender assignment in French-speaking WS patients. Despite a Verbal Mental Age selected to be higher than the chronological age of the young control group, these people with WS continue even in adulthood to show clear-cut deficits in their production of an aspect of morphosyntax that normal children acquire effortlessly very early. The results of the 2 studies, one focusing on receptive language and the other on expressive language, challenge the notion that comprehension and use of morphosyntactic rules in WS individuals are intact. The within-domain dissociations regarding the use of grammatical gender assignment across several sentence elements and their difficulties in understanding embedded sentences—two quintessentially linguistic skills—suggest that we must rethink the notion of spared, modular, language capacities in Williams syndrome. We conclude that WS language follows a different path to normal acquisition and may turn out to be more like second language learning.  相似文献   

Competencies in Geriatric Nursing: Empirical Evidence from a Computer-Based Large-Scale Assessment Calibration Study     

Roman Kaspar  Ottmar Döring  Eveline Wittmann  Johannes Hartig  Ulrike Weyland  Annette Nauerth  Michaela Möllers  Simone Rechenbach  Julia Simon  Iberé Worofka 《Vocations and Learning》2016,9(2):185-206

Valid and reliable standardized assessment of nursing competencies is needed to monitor the quality of vocational education and training (VET) in nursing and evaluate learning outcomes for care work trainees with increasingly heterogeneous learning backgrounds. To date, however, the modeling of professional competencies has not yet evolved into procedures that would meet large-scale assessment (LSA) standards in VET. To empirically test a proposed structural model for client-directed nursing competence and to estimate psychometric properties of a newly developed video- and computer-based test (CBT) to inform subsequent LSA in nursing VET, 402 final-year nursing students from 24 German schools responded to a 77 item CBT. Multi-dimensional IRT modeling was employed to test the subdomain structure and estimate students’ competencies in geriatric nursing. The standardized CBT measures nursing students’ client-directed care competence with acceptable precision (WLE?=?0.76) and does so across the whole range of observed proficiency levels. Structural validity was supported by substantive contributions of test items from all proposed process-oriented subdomains, practice field scenarios, as well as items with and without reference to emotional demands. However, it was not possible to empirically separate the diagnostic, practical or communicative subdomains, probably reflecting parallel, recursive and hierarchical care processes in complex care situations. On average, students in our sample attained 45 % of the maximum test score so it is a demanding assessment of nursing competence. An extensively piloted, valid and reliable CBT is suggested to assess nursing students’ client-directed care competencies at the end of the third year of the VET program.  相似文献   

Urban High School Student Engagement Through CincySTEM iTEST Projects     

Beckett  Gulbahar H.  Hemmings  Annette  Maltbie  Catherine  Wright  Kathy  Sherman  Melissa  Sersion  Brian 《Journal of Science Education and Technology》2016,25(6):995-1007

Journal of Science Education and Technology - This paper focuses on the notable heightening of underrepresented students’ engagement in STEM education through project-based learning CincySTEM...  相似文献   

Determinants of middle school students' intention to enroll in a high school science course: An application of the theory of reasoned action     

Frank E. Crawley  Annette S. Coe 《科学教学研究杂志》1990,27(5):461-476

The determinants of intentions to enroll in a high school science course were investigated, using the theory of reasoned action, among earth science students enrolled in a middle school located in a middle-income, suburban community in central Texas. The sample consisted of 5 of 14 eighth-grade earth science classes, randomly selected for this study. Classes contained Caucasian and minority students, male and female, of differing science abilities who were grouped according to general academic abilities—basic, average, and gifted and talented. The prediction of behavioral intention of sample participants was tested using four external variables, attitude, and subjective norm (Direct-Full Effects Model), attitude and subjective norm alone (Direct-Reduced Effects Model), and disaggregated data on attitude and subjective norm (Indirect Effects Model). Results of the study revealed attitude and subjective norm to be the sole predictors of behavioral intention for the aggregated data, but to be differentially effective for groups formed on the basis of sex, ethnicity, general ability, and science ability. Evidence is presented to show that the relative contributions of attitude and subjective norm to the prediction of behavioral intention varies among students depending upon their sex, ethnicity, general ability, and science ability. Results of the study are discussed in terms of increasing the enrollment of all students in elective science courses.  相似文献   

Appreciated abroad, depreciated at home. The career of a radiochemist in Norway: Ellen Gleditsch (1879-1968)     

Lykknes A  Kvittingen L  Børresen AK 《Isis; an international review devoted to the history of science and its cultural influences》2004,95(4):576-609

Ellen Gleditsch (1879-1968) became Norway's first authority on radioactivity and the country's second female full professor. From her many years abroad--in Marie Curie's laboratory in Paris and at Yale University in New Haven with Bertram Boltram--she became internationally acknowledged and developed an extensive personal and scientific network. In the Norwegian scientific community she was, however, less appreciated, and her appointment as a professor in 1929 caused controversy. Despite the recommendation of the expert committee, her predecessor and his allies spread the view that Gleditsch was a diligent but outdated researcher with little scientific promise-a view that apparently persists in the Norwegian chemical community today. In addition to her scientific work, Gleditsch acquired political influence by joining the International Federation of University Women in 1920; she later became the president of both the Norwegian section and the worldwide organization. She worked in particular to establish scholarships enabling women to go abroad.  相似文献   

Roles of assessment in secondary education: Participant perspectives     

Annette Rasmussen  Nanna Friche 《Educational Assessment, Evaluation and Accountability》2011,23(2):113-129

Performance pressure at both the institutional and individual level of secondary education has been identified as a pressure that is acknowledged all over Europe and raises questions about the extent to which agents in lower and upper secondary education interpret assessment in terms of either control or learning, or perhaps both. Drawing on empirical findings from two case studies in Denmark, the article focuses on the social roles of educational evaluation and assessment, and discusses the ways in which the local level interpretations of policy demands influence teaching and learning in secondary education. To enable an analysis of the understanding of different agents in the field, the article combines important sociological thinking with the basic distinction between assessment of programmes and assessment of individuals. Presuming that assessment practices bear the traces of the social structure that they both express and reproduce, the aim of this paper is to interrogate how the agents view and interpret such practices.  相似文献   

Editorial     

Prof. Dr. Mareike Kunter  Prof. Dr. Annette Scheunpflug  Prof. Dr. Drs. h.c. Jürgen Baumert 《Zeitschrift für Erziehungswissenschaft》2011,14(1):7-9

  相似文献   

A Maximal Graded Exercise Test to Accurately Predict VO2max in 18–65-Year-Old Adults     

James D. George  Danielle I. Bradshaw  Annette Hyde  Pat R. Vehrs  Ronald L. Hager  Frank G. Yanowitz 《Measurement in physical education and exercise science》2013,17(3):149-160

The purpose of this study was to develop an age-generalized regression model to predict maximal oxygen uptake (VO_2max) based on a maximal treadmill graded exercise test (GXT; George, 1996) George, J. D. 1996. Alternative approach to maximal exercise testing and VO_2max prediction in college students. Research Quarterly for Exercise and Sport, 67: 452–457. [Taylor & Francis Online], [Web of Science ®] , [Google Scholar]. Participants (N?=?100), ages 18–65 years, reached a maximal level of exertion (mean?±?standard deviation [SD]; maximal heart rate [HR_max]?=?185.2?±?12.4 beats per minute (bpm); maximal respiratory exchange ratio [RER_max]?=?1.18?±?0.05; maximal rating of perceived exertion (RPE_max)?=?19.1?±?0.7) during the GXT to assess VO_2max (mean?±?SD; 40.24?±?9.11 mL·kg^?1·min^?1). Multiple linear regression generated the following prediction equation (R?=?.94, standard error of estimate [SEE]?=?3.18 mL·kg^?1·min^?1, %SEE?=?7.9): VO_2max (mL·kg^?1·min^?1)?=?13.160?+?(3.314 × gender; females?=?0, males?=?1) ? (.131 × age) ? (.334 × body mass index (BMI))?+?(5.177 × treadmill speed; mph)?+?(1.315 × treadmill grade; %). Cross validation using predicted residual sum of squares (PRESS) statistics revealed minimal shrinkage (R_p ?=?.93 and SEE _p ?=?3.40 mL·kg^?1·min^?1); consequently, this model should provide acceptable accuracy when it is applied to independent samples of comparable adults. Standardized β-weights indicate that treadmill speed (.583) was the most effective at predicting VO_2max followed by treadmill grade (.356), age (?.197), gender (.183), and BMI (?.148). This study provides a relatively accurate regression model to predict VO_2max in relatively fit men and women, ages 18–65 years, based on maximal exercise (treadmill speed and grade), biometric (BMI), and demographic (age and gender) data.  相似文献   

Meaning Making with Multiple Representations: a Case Study of a Preservice Teacher Creating a Digital Explanation     

Nielsen  Wendy  Turney  Annette  Georgiou  Helen  Jones  Pauline 《Research in Science Education》2022,52(3):871-890

Research in Science Education - The construction of dynamic multimedia products requires the selection and integration of a range of semiotic resources. As an assessment task for preservice...  相似文献