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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.

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: