Torleif Halkjelsvik

T. Halkjelsvik and M. Jørgensen

When 2 + 2 should be 5: The summation fallacy in time prediction

Journal of Behavioral Decision Making

M. Jørgensen, T. Halkjelsvik and K. Liestøl

When should we (not) use the mean magnitude of relative error (MMRE) as an error measure in software development effort estimation?

Information and Software Technology

M. Jørgensen, M. Welde and T. Halkjelsvik

Evaluation of Probabilistic Project Cost Estimates

IEEE Transactions on Engineering Management

M. Jørgensen and T. Halkjelsvik

Sequence effects in the estimation of software development effort

Journal of Systems and Software

M. Welde, M. Jørgensen, P. F. Larssen and T. Halkjelsvik

Estimering av kostnader i store statlige prosjekter: Hvor gode er estimatene og usikkerhetsanalysene i KS2-rapportene?

Concept-rapport nr. 59

T. Halkjelsvik and M. Jørgensen

Time predictions: Understanding and avoiding unrealism in project planning and everyday life

Simula SpringerBriefs on Computing

E. Løhre and T. Halkjelsvik

Time Perception Can Influence Performance Time Predictions

M. Jørgensen, T. Halkjelsvik and B. Kitchenham

How Does Project Size Affect Cost Estimation Error? Statistical Artifacts and Methodological Challenges

International Journal of Project Management

T. Halkjelsvik and M. Jørgensen

From Origami to Software Development: a Review of Studies on Judgment-Based Predictions of Performance Time

Psychological Bulletin

T. Halkjelsvik, M. Jørgensen and K. Teigen

To Read Two Pages, I Need 5 Minutes, But Give Me 5 Minutes and I Will Read Four: How to Change Productivity Estimates by Inverting the Question

Applied Cognitive Psychology

M. Jørgensen and T. Halkjelsvik

The Effects of Request Formats on Judgment-Based Effort Estimation

Journal of Systems and Software