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 research focuses on the development of educational scales, primary within the field of mathematics education. 

Substantive Focus:

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

Methodological Focus:

  • Differential Item Functioning
  • (Multidimensional) Item Response Theory
  • Scale development
  • Test-linking and vertical scaling

My current work is under the umbrella 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).



University of Oslo Cultural and Social Activities Award 2021


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 Frønes, Tove Stjern; Pettersen, Andreas; Radišić, Jelena & Buchholtz, Nils (Ed.), Equity, Equality and Diversity in the Nordic Model of Education. Springer. ISSN 9783030616472. p. 251–272. doi: 10.1007/978-3-030-61648-9_10.
  • Ræder, Henrik Galligani; Olsen, Rolf Vegar & Blömeke, Sigrid (2020). Large-Scale Assessments in the Norwegian Context. In Harju-Luukkainen, Heidi Katarina; McElvany, Nele & Stang, Justine (Ed.), Monitoring Student Achievement in the 21st Century. European Policy Perspectives and Assessment Strategies.. Springer Nature. ISSN 978-3-030-38968-0. p. 195–206. doi: 10.1007/978-3-030-38969-7_16. Full text in Research Archive

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  • 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, p. 21–25.
  • Ræder, Henrik Galligani; Andersson, Björn & Olsen, Rolf Vegar (2019). Exploring the unidimensionality of the Norwegian National Numeracy tests.
  • 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.
  • 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. Universitetet i Oslo.
  • 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. Universitetet i Oslo.

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Published Nov. 1, 2017 11:53 AM - Last modified May 19, 2022 7:12 AM