Research

RESEARCH INTERESTS

Focus:

Colour Vision: Colour categorisation, colour constancy, object colours, colour development, colour preferences.

Methods:

Focus: Psychophysics, colour rendering, mathematical modelling, instrument calibration
Other expertise: Eye tracking, developmental and cross-cultural research.

General interests and broader perspective

Implicit Learning: Automatic perception of structure, feature creation.
Language: Sapir-Whorf-Hypothesis, linguistic relativity, linguistic determinism.
Situated Cognition: Environmental and cultural factors of perception and cognition.
Epistemology: Constructivism, influence of learning and culture on insight.

FULL PUBLICATIONS

In prep

Sorokowski, P., Sorokowska, A., Witzel, C. (under review). Same sexual pattern of colour preferences in Poland and Papua.
Witzel, C., & Gegenfurtner, K. R. (in prep). Category effects for equally dicriminable colours.
Witzel, C., & Gegenfurtner, K. R. (in prep). Chromatic Contrast. In R. Luo (Ed.), Encyclopedia of Color Science and Technology. Heidelberg: Springer.

Articles

Witzel, C., & Gegenfurtner, K. R. (2013). Categorical sensitivity to color differences. Journal of vision, 13(7), article 1.
Rothen, N., Seth, A. K., Witzel, C., & Ward, J. (2013). Diagnosing synaesthesia with online colour pickers: maximising sensitivity and specificity. Journal of neuroscience methods, 215(1), 156-160.
Witzel, C., & Gegenfurtner, K. R. (2011). Is there a lateralized category effect for color? Journal of Vision, 11(12).
Witzel, C., Valkova, H., Hansen, T. & Gegenfurtner, K. R. (2011). Object knowledge modulates colour appearance. i-perception, 2(1), 13-49.
Olkkonen, M., Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2010). Categorical color constancy for real surfaces. Journal of Vision, 10(9).

Book Chapters

Witzel, C., & Gegenfurtner, K. R. (under review). Category effects on colour discrimination. In C. P. Biggam (Ed.), Progress in Colour Studies IV.
Witzel, C. & Gegenfurtner, K. R. (2013). Memory Color. In R. Luo (Ed.), Encyclopedia of Color Science and Technology. Heidelberg: Springer.
Witzel, C. (2011). Unterschiede in der Farbwahrnehmung. In A. Groh (Ed.), Was ist Farbe? - Bunte Beiträge aus der Wissenschaft (pp. 39-62). Berlin: Weidler.
Witzel, C. (2011). Farberscheinung und kulturelles Wissen: Der Gedächtnisfarbeffekt für kulturspezifische Objekte . TRANS, 18.

Conference Presentations

Witzel, C., & Gegenfurtner, K. R. (2012). Category effects for red and brown. Paper presented at the European Conference of Visual Perception (ECVP), Alghero, Italy.
Witzel, C., & Gegenfurtner, K. R. (2012, 10-12. July 2012). No categorical appearance of equally discriminable colours. Paper presented at the Progress in Colour Studies 2012 (PICS12), Glasgow.
Witzel, C., Valkova, H., Hansen, T., & Gegenfurtner, K. R. (2010). Cultural Knowledge Influences Colour Appearance. Perception, 39 ECVP Abstract Supplement, 13.
Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2010). Kulturelles Wissen beeinflusst die Farberscheinung. Talk at the 52th TeaP , Saarbrücken, Germany.
Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2009). Categorical reaction times for equally discriminable colours. Perception, 38 ECVP Abstract Supplement, 14.
Olkkonen, M., Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2009). Categorical color constancy for rendered and real surfaces. Journal of Vision, 9(8):331, 331a.
Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2008). Width of colour categories predicted by discrimination thresholds. Perception, 37 ECVP Abstract Supplement, 146.
Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2008). Categorical discrimination of colour. Journal of Vision, 8(6):577, 577a.
Witzel, C., Hansen, T. & Gegenfurtner, K. R. (2008). Wie sich Farben mit den Betrachtern und mit den Zeiten ändern. Poster at the 50th TeaP , Marburg. [Abstract]
Witzel, C. & Cousineau, D. (2005). What prototypes can teach us about unknown knowledge. Poster presented at the BBCS/SCCC, Montreal, Canada. [Abstract]