The participants were divided into five groups: normals, deuteranomals, deuteranopes, protanomals, and protanopes.
Figure 4 is a more detailed analysis in which the deuteranomals and protanomals are divided into mild, moderate, and severe subgroups.
A similar pattern occurs with Y signals, except that both deuteranomals and protanomals have significantly shorter response times than do deuteranopes.
The differences are statistically significant, except for normal participants between G and Y signals, for deuteranomals between G and Y signals, for deuteranopes between R and Y signals, for protanomals for Y signals with both R and G signals, and for protanopes for Y signals with both R and G signals.