Denise Reis Costa

Postdoctoral Fellow - Centre for Educational Measurement
Image of Denise Reis Costa
Norwegian version of this page
Phone +47 22844468
Room 355
Visiting address Gaustadalleen 21 Hus C plan 1 0349 Oslo
Postal address Postboks 1161 Blindern 0318 Oslo

Academic interests

I have been working in the educational research field since 2005 with interest in the following topics: survey and data analysis, educational statistics, international large-scale assessments, Item Response Theory (IRT) models, computer-based assessments, adaptive testing and log file analyses.


  • Ph.D., Statistics, 2013, State University of Campinas, Sao Paulo, Brazil
  • M.S., Statistics, 2009, Federal University of Rio de Janeiro, Brazil
  • B.A., Statistics, 2006, University of Brasilia, Brazil

Positions held

  • 2018 - Present Postdoctoral Researcher, CEMO, University of Oslo, Norway
  • 2017 - 2017 Senior Research Assistant, Department of Applied Educational Science, Umeå University, Sweden
  • 2016 - 2016 OECD Thomas J. Alexander Fellow, Directorate for Educational and Skills, OECD, France
  • 2013 - 2017 Researcher, Instituto Nacional de Estudos e Pesquisas Educacionais Anisio Teixeira, Ministry of Education, Brazil
  • 2005 - 2012 Consultant, Centro de Selecao e Promocao de Eventos, University of Brasilia, Brazil


  • Reis Costa, Denise; Bolsinova, Maria; Tijmstra, Jesper & Andersson, Björn (2021). Improving the Precision of Ability Estimates Using Time-On-Task Variables: Insights From the PISA 2012 Computer-Based Assessment of Mathematics. Frontiers in Psychology.  ISSN 1664-1078. Show summary
  • Reis Costa, Denise & Eklöf, Hanna (2019). IRT Scales for Self-reported Test-Taking Motivation of Swedish Students in International Surveys. Springer Proceedings in Mathematics & Statistics.  ISSN 2194-1017.  265, s 53- 63 . doi: 10.1007/978-3-030-01310-3_5 Full text in Research Archive.

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  • Reis Costa, Denise (2019). Application of Kaplan-Meier Curves for Analysis of Process Data.
  • Reis Costa, Denise (2019). R Package LOGAN: Log File Analysis in International Large-Scale Assessments.
  • Reis Costa, Denise (2018). Exploring Log Files in International Large-scale Assessments: Methods, Practices and Tools.
  • Reis Costa, Denise (2018). LOGANShiny: an app for illustrating the analysis of log-file data in International Large-scale Assessments. [www ].
  • Reis Costa, Denise & Eklöf, Hanna (2018). Test-taking Motivation in International Surveys: an IRT Approach.

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Published Jan. 9, 2018 9:42 AM - Last modified Apr. 14, 2020 1:14 PM