marginally significantp < 0.001
There was significant main effect of perceptual load, F (1, 19) = 290.86, p < 0.001, η 2 p = 0.94, with faster RTs in the low load condition (631 ms) than in the high load condition (1207 ms); and, there was also a marginally significant main effect of singleton distractor presence, F (1, 19) = 17.72, p < 0.001, η 2 p = 0.48, with RTs in the neutral distractor condition (937 ms) being slower than RTs in the singleton distractor absent condition (901 ms).