Dr. Katrin Müller-Johnson

Senior Lecturer in Applied Criminology

Dipl. Psych., Free University of Berlin, Germany, 1999
MSt Legal Research, Oxford University, UK, 2000
Ph.D. Human Development, Cornell University, UK, 2005


Dr. Müller-Johnson’s research interest is the interface between psychology and law, focusing on eyewitness psychology, investigative interviewing and on legal decision-making.

One major area of her research is on the effects of cognitive aging on eyewitness testimony and on ways to improve the quality of investigative interviews with older adults. She also studies the victimisation of older adults, the prevention of elder mistreatment and victims’ experiences with the legal system.

The other focus of her research is decision-making in the criminal justice context, such as jurors’ interpretations of standards of proof, or sentencing decisions. From 2007 to 2009 she was Principal Investigator on an AHRC grant investigating jurors’ interpretations of standards of proof.

Other recent work includes a study on the prosecution of child sexual abuse. Dr. Müller-Johnson is also interested in family-law oriented connections between psychology and law and has investigated post-divorce child contact arrangements in the UK, the USA and in Germany.

Selected Publications:

Eyewitness Psychology

  • Müller-Johnson, K, (2009). Older Adults as Witnesses in Court. In Jamieson,A., Moenssens, A. (Ed). Wiley Encyclopedia of Forensic Science. Chichester: John Wiley Sons Limited.
  • Müller-Johnson, K. (2009). Ältere Menschen als Zeugen vor Gericht. Forensische Psychiatrie, Psychology und Kriminologie. 3, 3, 163- 170.
  • Gilstrap, L.L., Laub, C., Zierten, E.A. & Müller-Johnson, K. (2008). The effects of adult suggestion and child consistency on young children's reports. Journal of Applied Social Psychology, 38, 7, 1905-1920.
  • Müller-Johnson, K, Toglia, M.P., Sweeney, C.D., Ceci, S.J. (2007) The perceived credibility of older adults as witnesses and its relation to ageism. Behavioral Sciences and the Law, 25, 355-375.
  • Müller-Johnson, K. & Ceci, S.J. (2007). The elderly eyewitness: A review and prospectus. In Toglia, M.P., Read, D.J., Ross, D.F., Lindsay, R.C.L., (Eds.). The Handbook of Eyewitness Psychology: Volume 1. Memory for Events, 577-603, Mahwah, NJ: Lawrence Erlbaum Associates, Inc.
  • Müller-Johnson, K. & Ceci, S. J. (2005). Zur suggestiven Beeinflussbarkeit von älteren Menschen (On the suggestibility of older adults). In K.-P.Dahle, R. Volbert (Eds.), Entwicklungspsychologische Aspekte der Rechtspsychologie. (Developmental aspects of legal psychology), 318-329. Goettingen: Hogrefe.
  • Müller-Johnson, K. & Ceci, S.J.(2004). Memory and suggestibility in older adults: Live event participation and repeated interview. Applied Cognitive Psychology, 18, 8, (1109-1127).

Decision-Making within the Criminal Justice Context

  • Müller-Johnson, K & Dhami, M. K. (2010). Effects of offenders‘ age and health on sentencing decisions. The Journal of Social Psychology, 150, 1, 77-97.
  • Leeney, D. G. & Müller-Johnson, K. (2010). Examining the link between forensic quality and customer service quality of police call centre interviews. International Journal of Police Science and Management, 12, 1, 69-80.
  • Kautt, P.M. & Müller-Johnson, K. (2009). Cross-jurisdictional disposition variability under sentencing guidelines: The example of equivalent sex offenses. Criminal Justice Review, 34, 3, 350-381.
  • Coates, S, Kautt, P.M. & Müller-Johnson, K (2009). Fixed Penality Notices. Journal of Experimental Criminology, 5, 399-428.