Dr. Ivar Fahsing - the homepage

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Dr. Ivar A. Fahsing is a Detective Chief Superintendent and Associate Professor at the Norwegian Police University College. He has more than 15 year as experience in the Norwegian Police as a detective covering a wide range of high profile cases from organised crime to homicide. He has published widely in the field of investigative management and decision-making, investigative interviewing, eyewitness testimony, forensic psychology, detective skills, expert performance, knowledge management and organised crime. He is used as expert-witness in courts and has for more many years conducted training of law-enforcement personnel, intelligence officers and civilian partners in Scandinavia, Europe, Africa, Asia, United Nations, Pentagon, etc.  Below you will find some of his publications and access his doctoral thesis called : The Making of an Expert Detective: Thinking and Deciding in Criminal Investigations. If you would like to read it - please click here. To get in contact for a proposal or an entertaining lecture please click here.


Scientific Publications  (Updated May 2020)


Fahsing, I. A., Ask, K. and Granhag, P.A. (2004) “The Man Behind the Mask”, Journal of Applied Psychology, Vol.89, No. 4, pp. 722-729.


Fahsing, I.A., Glomseth, R. Gottschalk, P. (2006). Kunnskapsdeling og dyktighet i politietterforsking. PHS Forskning 2006:3, s.115-124


Dean, G., Fahsing, I.A. and Gottschalk, P. (2006), “Profiling Police Investigative Thinking: A Study of Police Officers in Norway”, International Journal of the Sociology of Law, 34 (4), pp. 221-228.


Karlsen,  J.T., Gottschalk,  P.;  Glomseth,  R.  and Fahsing, I.A. (2007), "Managing  Police Investigations by Projects",  International Journal of Innovation and Learning  (IJIL), vol. 4 (4), pp. 391-410.


Fahsing, I.A, Filstad, C. and Gottschalk, P. (2007), "Research Propositions for the Use of Role Models in Law Enforcement: The Case of Newcomers in Police Investigations", International Journal of Innovation and Learning, 4 (5), pp. 501-515.


Dean, G., Fahsing, I.A. and Gottschalk, P. (2007). In search of police investigative thinking styles: An exploratory study of detectives in Norway and Singapore. International Journal of Learning and Change, 2 (1), pp. 20-33.


Dean, G., Fahsing, I.A. and Gottschalk, P. (2007). Qualitative and quantitative study of police investigative thinking styles. International Journal of Knowledge and Learning, 3(1), pp. 76-87.


Dean, G., Fahsing, I.A. and Gottschalk, P. (2007). Creativity as a determinant of thinking style in police investigations. International Journal of Police Science and   Management, 9(2), pp. 112-121. 


Dean, G., Fahsing, I.A., Gottschalk, P. and Solli-Sæther, H. (2008). Investigative thinking and creativity: An empirical study of police detectives in Norway. International Journal of Innovation and Learning, 5 (2),  pp.170-185.


Dean, Geoff; Fahsing, I.A., Glomseth, R. Gottschalk, P. (2008). Capturing knowledge of police investigations: Towards a research agenda. Police Practice & Research. 9, (4): pp. 343-358. 


Fahsing, I.A., Glomseth, R. Gottschalk, P.(2008). Characteristics of effective SIOs: a content analysis for management in police investigations. International Journal of Management and Enterprise Development. 5, (6): pp. 708-722. 


Fahsing, I.A. and Gottschalk, P. (2008). Characteristics of effective detectives: A content analysis for investigative thinking styles in policing. International Journal of Innovation and Learning, 5 (6), pp. 651-663.


Fahsing, I.A. and Gottschalk, P. (2008). Kriminelle organisasjoner. Hvordan forstå organisert kriminalitet? Bergen: Fagbokforlaget.


Filstad, C., Dean, G., Fahsing, I.A. and Gottschalk, P. (2008). Newcomers’ use of colleagues as role models: Research propositions for investigative thinking styles of law enforcement detectives. Knowledge and Process Management, 14(2), pp. 71-80.


Fahsing, I.A. and Rachlew, A.A., (2009). Investigative Interviewing in the Nordic Region. In International Developments in Investigative Interviewing. Milne, B, Savage, S. and Williamson, T. (Eds). Devon: Willan Publishing.


Dean, G., Fahsing, I.A.  and Gottschalk, P. (2010), Organised Crime: Policing Illegal Business Entrepreneurialism, Oxford: Oxford University Press.


Fahsing, I. A.(2013). Tænkestile: Effektivitet, dyder og krydspress i efterforskninger I C.Hald & K. V.Rønn (Red.), Om at opdage - metodiske refleksjoner over politiets undersøkelsespraksis. København: Samfundslitteratur.


Fahsing, I.A., & Ask, K. (2013). Decision Making and Decisional Tipping Points in Homicide Investigations: An Interview Study of British and Norwegian Detectives. Journal of Investigative Psychology and Offender Profiling, 10(2), 155-165. doi: 10.1002/jip.1384


Fahsing, I.A,  Jakobsen, K.K. & Ohrn, H.J. (2015). Investigative Interviewing in Scandinavia - suspects. In Walsh, D; Oxburgh, G.: Redlich, A. and Myklebust, T. (Eds) Contemporary developments and practices in investigative interviewing and interrogation: An International perspective. Oxford: Routledge.


Jakobsen, K.K., Fahsing I. & Roos af Hjelmsaeter, E. (2015). Investigative Interviewing in Scandinavia – witnesses. In Walsh, D; Oxburgh, G.: Redlich, A. and Myklebust, T. (Eds) Contemporary developments and practices in investigative interviewing and interrogation: An International perspective. Oxford: Routledge.


Rachlew, A. & Fahsing. I.A. (2015). Etterforskning og politiavhør. I Aarli, R, Hedlund, M., Jebens, S.E.(Red.) Bevis i straffesaker. Oslo: Gyldendal. 


Oxburgh, G, Fahsing, I., Blair, P., Haworth, K (2016). Interviewing suspected offenders in Gant, T., Milne, B., Myklebust, T., & Oxburgh, G.(Eds.) Communication in Forensic Contexts: Integrated Approaches from Psychology, Linguistics and Law Enforcement. Chichester: Wiley.


Fahsing, I.A., & Ask, K. (2016). The Making of an Expert Detective: The Role of Experience in English and Norwegian Police Officers’ Investigative Decision Making. Psychology, Crime & Law, 1–44. doi: 10.1080/1068316X.2015.1077249


Fahsing, I.A. (2016). The Making of an Expert Detective: Thinking and Deciding in Criminal Investigations. (Doctoral dissertation), University of Gothenburg, Department of  Psychology. http://hdl.handle.net/2077/47515.


Fahsing, I.A., & Ask, K. (2017). In search of Indicators of Detective Aptitude: Police recruits’ logical reasoning and ability to generate investigative hypotheses. Journal of Police and Criminal Psychology. doi: 10.1007/s11896-017-9231-3.


Bjerknes, O.T og Fahsing, I.A. (2017). Etterforsking. Prinsipper, metoder og praksis. Bergen: Fagbokforlaget.

Ask, K. and Fahsing, I.A. (2018). Investigative Decision-Making. In Griffiths. A and Milne. R. (Eds) The Psychology of Criminal Investigation: From theory to practice. New York: Routledge.


Ask, K. and Fahsing I. (2019). Investigative Decision-Making. In R. Bull and I. Blandon-Gitlin (Eds) The Routledge International Handbook of Legal and Investigative Psychology. New York: Routledge.


Ask, K. and Fahsing I. (in press). Utredares beslutsfattande.  I P.A. Granhag og K. Ask (Red.) Handbok i rettspsykologi.  Stockholm: Liber forlag. 


Fahsing I. (2019). The Making of an Expert Detective: Decision-Making in Norway and UK., A European Perspective. In M. Roycroft and J. Roach (Eds) Decision Making in Police  Enquiries and Critical Incidents. What really works? London: Palgrave


Fahsing I. (manuscript submitted for publication). Beyond Reasonable Doubt: How to Think Like an Expert Detective. In P. Marques and M. Paulino (Eds)  Police Psychology: New Trends in Forensic Psychological Science. Cambridge, MA: Elsevier Academic Press


Fahsing, I. (manuscript submitted for publication). "Have you Considered the Opposite? A Corrective Strategy for Judgment in Criminal Justice"

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