Research interest include educational measurement and psychometrics in general, especiallytest equating, parametric and nonparametric item response theory, and international large-scale assessments.
Currently: Professor at the Department of Statistics, USBE, Umeå University.
2015- : Professor of Statistics with specialty in Psychometrics, USBE; Umeå University, Sweden.
2010-2015: Associate Professor at the Dept. of Statistics, USBE; Umeå University, Sweden.
2006-2010: Assistant Professor at the Dept. of Statistics, Umeå University, Sweden.
2006 (spring): Post doc at University of Twente, the Netherlands.
2005 (fall): Visiting scholar at McGill University, Canada.
2004-2005: Lecturer at Dept. of Statistics, Umeå University, Sweden.
2003: PhD in Statistics, Umeå University, Sweden.
Editor, editorial boards, academy membership and awards
Associate editor for Journal of Educational Measurement (2015-2016)
Editorial board for the International Journal of Testing (2015-
Coordinating editor of Behaviormetrika (2017-
Editor of the proceedings of the International meeting of the Psychometric Society 2017
Active member of the young academy of Sweden (2014-2018)
Young researcher career award 2008
Royal Skyttean prize for young researchers 2008
Current and completed PhD studens
Gabriel Wallin (PhD 2020: Extensions of the kernel method of test score equating)
Jonathan Wedman (PhD, 2017: Theory and validity evidence for a large-scale test for selection to higher education)
Inga Laukityte (PhD, 2017: Statistical Modeling in International Large-scale Assessments)
Kenny Bränberg (PhD, 2010: Observed score equating with covariates)
Jannika Lindvall (PhD 2018: Critical features and impacts of mathematics teacher professional development programs: Comparing and characterizing programs implemented at scale) (co-supervisor)
Valentina Sansivieri (PhD 2017: Item response theory equating with the non-equivalent groups with covariates design) (co-supervisor)
Björn Andersson (PhD, 2014: Contributions to Kernel equating) (co-supervisor)
Jenny Häggström (PhD, 2011: Selection of smoothing parameters with application in causal inference) (co-supervisor)
Anna Sundström (PhD, 2009: Developing and validating self-report instruments) (co-supervisor)
Per-Erik Lyrén (PhD, 2009: A perfect score: Validity arguments for college admission tests) (co-supervisor)