Dataset Open Access

Categorical perception for red and brown

Witzel, Christoph; Gegenfurtner, Karl Reiner

This data supplements the article:

Witzel, C., & Gegenfurtner, K. R. (2016). Categorical perception for red and brown. Journal of Experimental Psychology: Human Perception & Performance, 42(4), 540-570. doi:10.1037/xhp0000154

The Excell-file with the data includes 3 sheets:

Sheet 1 (jnd): JND data from Figure 4.a of the above article.

- columns = 20 test colours.

- rows = 14 observers.

Sheet 2 (rt): Response time data from Figure 6.a of the above article.

- columns = three kinds of colour pairs (AB, BC, & CD) and the location of the target (left vs. right).

- rows = 15 observers.

Sheet 3 (er): Error rates from Figure 6.b of the above article.

- columns and rows as in sheet 2.

This research was funded by the Deutsche Forschungsgemeinschaft (#SFB TRR 135), and CW was financially supported by a German Academic Exchange Service (DAAD) postdoctoral fellowship and by J. Kevin O'Regan's ERC Advanced Grant "FEEL" (#323674).
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