[ABE-L] Alina A. von Davier visitará o PIPGEs UFSCar.

[Jorge Luis Bazan]

Esta mensagem é paradivulgar a palestra desta semana do Seminário Conjunto do ProgramaInterinstitucional de Pós-graduação em Estatística (PIPGEsICMC/USP e UFSCar), São Carlos.  Segue a informação.
LOCAL:Auditório Luiz Antonio Fávaro(sala 4-111)– ICMC-USP, São Carlos, SP. 
TITULO: Quality Control and Test Security in Standardized Assessments WithMultistage Test Designs

Palestrante:Alina A. von Davier. Educational Testing Service (Princeton, NJ,USA)
  
Resumo:A multistage test (MST) is a computer-based assessment that may bethought of as a compromise between a linear test and acomputer-adaptive test (CAT). As such, MSTs may be vulnerable to atleast some of the major security threats associated with each ofthese types of test (e.g., copying for linear tests and itempre-knowledge for CATs). The degree of vulnerability of anyparticular MST to these threats, as well as others, will depend(among other things) on details of the MST assembly andadministration design. To supplement these preventative measures,routine statistical monitoring of response and timing data for items,modules and tests, as well as the screening of performance ofindividual test takers and clusters of test takers, is essential.For monitoring and screening procedures to be effective, it iscritical that statistical baselines be developed for the differentcharacteristics of the data that are being monitored. Since an MSThas a different structure than either a linear test or a CAT, it isreasonable to expect that test takers’ behavior for MSTs willdiffer systematically from behavior observed for either linear testsor for CATs. In this presentation I discuss two concrete analyzes,one that identifies people who are outliers and one that identifiesitems that are outliers. For the first approach we use the scoresfrom the variable section of the test (and make use of the MSTdesign) to produce an expected score. For the second approach Ipresent the use of traditional quality control tools such as CUSUMcharts to identify items that have been exposed. What we are lookingfor are data patterns that deviate substantially from our baselinesin ways that are consistent with what would be expected from behaviorthat may lead to invalid scores. 
Favordivulgar a possíveis interessados.

Saudações,Jorge


Jorge LuisBazánProfessorDoutor (MS-3)
Department of Applied Mathematics and Statistics,ICMC-USP
C.P. 668 - São Carlos, SP, Brazil - CEP 13560-970http://www.icmc.usp.br/pessoas/jlbazan/








 


     El Viernes, 31 de julio, 2015 12:12:39, MARINHO G. ANDRADE <marinho em icmc.usp.br> escribió:
   

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Prezados assinantes,no período de 3 a 8/8/2015, Alina A. von Davier (Senior Research Director do Educational Testing Service, Princeton, NJ, USA) visitará o PIPGEs UFSCar ICMC/USP em São Carlos-SP. A visita tem apoio de um projeto PVE/CNPq e do CeMEAI/ICMC/USP. Além de reuniões com pesquisadores e estudantes da USP e da UFSCar, a pesquisadora participará de uma banca de qualificação de doutorado do PIPGEs e apresentará um seminário no PIPGEs.Atenciosamente.Coordenação do PIPGEs.
Marinho G. Andrade / Carlos Alberto R Diniz 
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