Goals of universal basic and secondary education     

Joel E. Cohen 《Prospects》2006,36(3):247-269

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Do public schools have a future? A case study of retrenchment and its implications     

Daniel L. Duke  Jon S. Cohen 《The Urban Review》1983,15(2):89-105

The present paper describes a model for predicting the consequences of reduced funding for public education and a case study designed as an initial test of the validity of the model. The case study highlights an inner-city high school in San Jose, California, during the aftermath of Proposition 13. As a result of the passage of Proposition 13 in 1978, severe limitations were placed on the ability of school districts in California to generate revenues from property taxes. San Jose High School was forced to cut programs and personnel. The impact of these cuts on the capacity of the school to serve its urban clients is investigated. Findings from the case study support the model's prediction that budget cuts in public education are more likely to exert a negative impact on disadvantaged students than on students from middle-class homes. Implications of further cuts in public education in general are discussed in the concluding section of the paper.  相似文献   

Evaluation of student laboratory reports under a schedule of partial reinforcement     

Ronald D. Cohen 《科学教学研究杂志》1971,8(2):185-189

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Active learners’ characterization in MOOC forums and their generated knowledge     

Anat Cohen  Udi Shimony  Rafi Nachmias  Tal Soffer 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(1):177-198

This study explores and characterizes learners' participation patterns in MOOC forums, as well as the factors that correlate with learners' participation. Educational data mining and learning analytics methods were used to retrieve and analyze the learners' interpersonal interaction data, which had accumulated in the Coursera log files. The content in the forums was categorized based on Henri's criteria and converted into quantitative values that could be compared and visualized. It was found that only 20% of the learners were collaborating in the forums throughout the entire course and were responsible for 50% of the total posts. A portion of them earned the name “Super Active.” The analyses not only demonstrated the volume of activity and its pattern but also revealed the content of the discussions, which helped to highlight the needs and reasons for students' usage of the forums. The content analysis showed intensity in the “Cognitive” and “Discipline” categories. Thus, forum participants benefit from discussions not only socially but disciplinarily and cognitively as well. Furthermore, even though a strong significant correlation was found between the learners’ completion status and their activity in the forums, a group of learners, who did not complete the course, was highly active.  相似文献   

In two minds about Soviet psychiatry     

Cohen D 《New scientist (1971)》1989,124(1686):48-50

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The awful truth. Why would anyone in their right mind want to clone a baby when animal cloning can go disastrously wrong?     

Cohen P  Concar D 《New scientist (1971)》2001,170(2291):14-15

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Effects of Linking Methods on Detection of DIF     

Seock-Ho Kim  Allan S. Cohen 《Journal of Educational Measurement》1992,29(1):51-66

Studies of differential item functioning under item response theory require that item parameter estimates be placed on the same metric before comparisons can be made. The present study compared the effects of three methods for linking metrics: a weighted mean and sigma method (WMS); the test characteristic curve method (TCC); and the minimum chi-square method (MCS), on detection of differential item functioning. Both iterative and noniterative linking procedures were compared for each method. Results indicated that detection of differentially functioning items following linking via the test characteristic curve method gave the most accurate results when the sample size was small. When the sample size was large, results for the three linking methods were essentially the same. Iterative linking provided an improvement in detection of differentially functioning items over noniterative linking particularly with the .05 alpha level. The weighted mean and sigma method showed greater improvement with iterative linking than either the test characteristic curve or minimum chi-square method.  相似文献   

Trauma-focused CBT for youth with complex trauma     

Cohen JA  Mannarino AP  Kliethermes M  Murray LA 《Child abuse & neglect》2012,36(6):528-541

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Investigating the Effect of Item Position in Computer‐Based Tests     

Feiming Li  Allan Cohen  Linjun Shen 《Journal of Educational Measurement》2012,49(4):362-379

Computer‐based tests (CBTs) often use random ordering of items in order to minimize item exposure and reduce the potential for answer copying. Little research has been done, however, to examine item position effects for these tests. In this study, different versions of a Rasch model and different response time models were examined and applied to data from a CBT administration of a medical licensure examination. The models specifically were used to investigate whether item position affected item difficulty and item intensity estimates. Results indicated that the position effect was negligible.  相似文献   

Inferring cross sections of 3D objects: A new spatial thinking test   总被引：1，自引：0，他引：1  

Cheryl A. Cohen  Mary Hegarty 《Learning and individual differences》2012,22(6):868-874

A new spatial ability test was administered online to 223 undergraduate students enrolled in introductory science courses. The 30-item multiple choice test measures individual differences in ability to identify the two-dimensional cross section of a three-dimensional geometric solid, a skill that has been identified as important in science, technology, engineering and mathematics (STEM) fields. Bivariate and partial correlations suggest that the test measures a skill that is distinct from three-dimensional mental rotation and change in view perspective. Test items varied along two scales: complexity of the geometric solid to be sliced and orientation of the cutting plane. Internal reliability of both the overall test and its subscales was satisfactory. Performance was higher on figures cut by orthogonal, rather than oblique, planes. Patterns of performance across more and less complex items, and patterns of sex differences on these items, suggest that items on the test are differentially amenable to imagistic and analytic strategies, with males outperforming females on items that are less amenable to analytic strategies. The test shows promise for online administration and for adaptation to younger populations.  相似文献