Henrik Galligani Ræder

Doctoral Research Fellow
Image of Henrik Galligani Ræder
Norwegian version of this page
Mobile phone +47 46470438
Room 389
Available hours By appointment
Visiting address Gaustadalléen 21 Hus C Plan 1 0373 OSLO
Postal address Postboks 1161 Blindern 0318 OSLO

Academic interests

My main research focuses is on the development of educational scales within the field of mathematics education. 

Substantive Focus:

  • Mathematics didactics
  • Numeracy
  • Norwegian context
  • National assessment systems
  • Educational equity

Methodological Focus:

  • Test-linking and vertical scaling
  • Multidimensional Item Response Theory (MIRT)
  • Differential Item Functioning (DIF)

My current work is under the project Educational Measurement in the Norwegian Context, with principal investigators Rolf Vegar Olsen and Sigrid Blömeke.

Main supervisor: Rolf Vegar Olsen

Co-supervisor: Björn Andersson

In addition, I co-organize the Oslo UseR! group.

Main project 

Vertical scaling of the Norwegian National Numeracy Tests (A scale for numeracy).



Doctoral Research Fellow, CEMO, University of Oslo, Norway, 2017-

Research assistant, Research Section for Physics Education, University of Oslo, Norway, 2015-2017


MA, Didactics of Physics and Mathematics, University of Oslo, Norway, 2017


  • Bergem, Ole Kristian; Nilsen, Trude; Mittal, Oleksandra & Ræder, Henrik Galligani (2020). Can teachers’ instruction increase low-SES students’ motivation to learn mathematics?, In Tove Stjern Frønes; Andreas Pettersen; Jelena Radišić & Nils Buchholtz (ed.),  Equity, Equality and Diversity in the Nordic Model of Education.  Springer.  ISBN 9783030616472.  10.  s 251 - 272 Show summary
  • Ræder, Henrik Galligani; Olsen, Rolf Vegar & Blömeke, Sigrid (2020). Large-Scale Assessments in the Norwegian Context, In Heidi Katarina Harju-Luukkainen; Nele McElvany & Justine Stang (ed.),  Monitoring Student Achievement in the 21st Century. European Policy Perspectives and Assessment Strategies..  Springer Nature.  ISBN 978-3-030-38968-0.  Chapter 16.  s 195 - 206 Full text in Research Archive.

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  • Ræder, Henrik Galligani & Olsen, Rolf Vegar (2020). Utvikling av nasjonale prøver – rapport 2b: Endelig rapport av vertikalt lenkedesign for de nasjonale prøvene i regning 5.-8. trinn.
  • Ræder, Henrik Galligani; Olsen, Rolf Vegar & Andersson, Björn (2020). Comparing measures of numeracy across grades.
  • Tjønn, Henrik & Ræder, Henrik Galligani (2020). Elevmedvirkning i vurderingsarbeid. Bedre Skole.  ISSN 0802-183X.  1, s 21- 25
  • Ræder, Henrik Galligani; Andersson, Björn & Olsen, Rolf Vegar (2019). Exploring the unidimensionality of the Norwegian National Numeracy tests.
  • Ræder, Henrik Galligani; Tokle, Olav Dalsegg & Olsen, Rolf Vegar (2019). Utvikling av nasjonale prøver – rapport 1 og 2a: Rapportering av potensielle underdimensjoner og implementering av vertikalt lenkedesign for de nasjonale prøvene i regning.
  • Ræder, Henrik Galligani; Andersson, Björn; Blömeke, Sigrid & Olsen, Rolf Vegar (2018). Development of Numeracy Proficiency in Primary and Lower Secondary School.
  • Ræder, Henrik Galligani; Angell, Carl & Henriksen, Ellen Karoline (2017). Uskarp forståelse: analyse av elevsvar knyttet til partiklers bølgeegenskaper og uskarphets-relasjonene.

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Published Nov. 1, 2017 11:53 AM - Last modified Oct. 2, 2020 5:51 PM