A recently published article in Journal of the Correctional Education Association from the BCLG presents the results from an investigation of participation in education during incarceration among Norwegian prisoners. The main result show that self efficacy is a stronger predictor for chosing to participate in education compared to actual reading skills.

Jones, L. Ø., Manger, T., Eikeland, O.-J., & Asbjørnsen, A. (2013). Participation in prison education: Is it a question of efficacy-beliefs rather than actual skills? Journal of Correctional Education, 64, 41-62.