Categorical perception for red and brown

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.