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Dr Colin Tredoux

Ph.D. (UCT)

Background and research interests

  • Social psychology: Contact theory and social influence
  • Psychology and law: All aspects, but especially eye-witness research, legal decision making, and detection of deception.
  • Cognitive psychology: Face recognition.

Currently working on ID, a software system for enhancing eyewitness recall of face images; and measurement and methodologies in naturalistic observation of intergroup contact and segregation.

NRF Rating application 2018

For reviewers of my 2018 NRF rating application, please find additional material (copies of articles, software, some talks, here)

Teaching responsibilities

  • PSY2006F: Research in Psychology, I
  • PSY2003S: Social Psychology of Intergroup Relations
  • PSY2010S: Cognition and Neuroscience
  • PSY3009F: Applied Cognitive Science
  • PSY4000W: Psychology and Law (semester module in Honours course)
  • PSY4000W: Statistics in Psychology (semester module in Honours course)
  • PSY5000W: Multivariate Statistical Analysis

Selected publications

See my latest research on my Google Scholar profile. For research sorted by date of publication, click here.

Wagner, U., Tropp, L., Finchilescu, G.F. & Tredoux, C.G. (2008) (Eds). Improving intergroup relations: Building on the legacy of Thomas F. PettigrewOxford: Blackwell

Tredoux, C.G., Foster, D.H., Allan, A., Cohen, A. & Wassenaar, D. (2005).  Psychology and lawCape Town: Juta.

Tredoux, C.G. & Durrheim, K.L. (2002). Numbers, hypotheses and conclusions. Juta:Cape Town.

Tredoux, C.G., & Dixon, J.A. (2009). Mapping the multiple contexts of racial isolation: The case of Long Street, Cape TownUrban Studies, 46, 761-777.

Dixon, J.A., Tredoux, C.G., Durrheim, K., Finchilescu, G. & Clack, B. (2008). ‘The inner citadels of the color line’: Mapping the micro-ecology of racial segregation in everyday life spaces. Social and Personality Psychology Compass, 2, 1547–1569

Tredoux, C. G., & Finchilescu, G. (2007). The contact hypothesis and intergroup relations 50 years on: Introduction to the special issue. South African Journal of Psychology, 37, 667-678.

Malpass, R.S., Tredoux, C.G. & McQuiston-Surrett, D. (2009). Public Policy and Sequential Lineups. Legal and Criminological Psychology, 14, 1-12.

Malpass, R. S., Tredoux, C. G., Schreiber-Compo, N., McQuiston-Surrett, D., MacLin, O.H., Zimmerman, L. A., & Topp, L. D. (2008). Study space analysis for policy development. Applied Cognitive Psychology, 22, 789-801.

Chiroro, P. M., Tredoux, C. G., Radaelli, S., & Meissner, C. A. (2008). Recognising faces across continents: The effect of within-race variations on the own-race bias in face recognition. Psychonomic Bulletin & Review, 15, 1089-92.

Tredoux, C.G., Parker. J.F. & Nunez, D.T. (2007).  Predicting eyewitness identification accuracy with mock witness measures of lineup fairness: Quality of encoding interacts with lineup format. South African Journal of Psychology, 37, 207-222.     

Tredoux, C.G., Nunez, D.T., Oxtoby, O. & Prag, B. (2007). An evaluation of ID: An eigenface-based construction system. South African Computer Journal, 37, 90-96.

Malpass, R. S, Tredoux, C. G. & McQuiston-Surrett, D. E. (2007). Lineup construction and lineup fairness. In R. Lindsay, D. Ross, J. D. Read & M. P. Toglia (Eds.), Handbook of Eyewitness Psychology (Vol. 2): Memory for PeopleLawrence  Erlbaum & Associates.

McQuiston-Surrett, D., Malpass, R. S., & Tredoux, C. G. (2006). Sequential vs. simultaneous lineups: A review of methods, data, and theory. Psychology, Public Policy and Law, 12, 137-169.

Dixon, J.A., Durrheim, K.L. & Tredoux, C.G. (2007). Contact and attitudes towards the principle and practice of racial equality. Psychological Science, 18, 867-872.

Tredoux, C.G., Dixon, J.A., Underwood, S., Nunez, D. & Finchilescu, G. (2005). Preserving spatial and temporal dimensions in observational data of segregation. South African Journal of Psychology, 35, 412- 32.

Dixon, J.A., Durrheim, K.L. & Tredoux, C.G. (2005). Beyond the optimal strategy: A ‘reality check’ for the contact hypothesis. American Psychologist, 60, 697-711.

Meissner, C. A., Tredoux, C. G., Parker, J. F., & MacLin, O. H. (2005). Eyewitness decisions in simultaneous and sequential lineups: A dual-process signal detection theory analysis. Memory & Cognition, 33, 783-792.

Tredoux, C.G., Meissner, C.M., Malpass, R.S. & Zimmerman, L.A.  (2004).  Eyewitness identification. In C. Spielberger (Ed), Encyclopedia of Applied Psychology. New York: Wiley.

Tredoux, C.G. (2002). A direct measure of facial similarity and its relation to human similarity perceptions. Journal of Experimental Psychology: Applied, 8, 180 -193.

Tredoux, C.G. & Pooley, S. (2001). Polygraph testing of deception: An evaluation and commentary. Industrial Law Journal, 22, 819-839.

Tredoux, C.G. (1998). Statistical inference on measures of lineup fairness. Law and Human Behavior, 22, 217-237.

See also the Micro-Ecology of Contact.

Contact details

Tel: +2721 650 3424
Room Number: 2.18
Email Address: