Table 1.

Mean and standard deviations of the average number of fixations until fixation on the target and on the flanker, percentage of trials with fixations on the flanker and duration of fixations on the flanker.

	low target–distractor discriminability		high target–distractor discriminability
	congruent	incongruent	congruent	incongruent	results of ANOVA
average number of fixations until fixation on the target	M = 3.9; s.d. = 0.84	M = 4.2; s.d. = 0.88	M = 3.6; s.d. = 0.80	M = 3.6; s.d. = 0.78	discriminability: F1, 23 = 32.89, p < 0.001, ${\mathit{\eta }}_{\mathbf{\text{p}}}^{\mathbf{\text{2}}}=\mathbf{\text{0.588}}$ congruency: F1, 23 = 1.74, p = 0.200, ${\eta }_{\mathrm{p}}^2=0.070$ discriminability × congruency: F1, 23 = 1.0, p = 0.326, ${\eta }_{\mathrm{p}}^2=0.042$
percentage of trials with fixations on the flanker	M = 10.35%; s.d. = 18.9%	M = 11.95%; s.d. = 0.21%	M = 10.94%; s.d. = 8.86%	M = 13.15%; s.d. = 0.92%	discriminability: F1, 25 = 0.641, p = 0.431, ${\eta }_{\mathrm{p}}^2=0.025$ congruency: F1, 25 = 2.79, p  = 0.107, ${\eta }_{\mathrm{p}}^2=0.101$ discriminability × congruency: F1, 25 = 0.125, p = 0.727, ${\eta }_{\mathrm{p}}^2=0.005$
average number of fixations until fixation on the flankera	M = 6.9; s.d. = 1.4	M = 6.7; s.d. = 1.5	M = 5.6; s.d. = 1.3	M = 5.2; s.d. = 1.2	discriminability: F1, 13 = 44.72, p < 0.001, ${\mathit{\eta }}_{\mathbf{\text{p}}}^{\mathbf{\text{2}}}=\mathbf{\text{0.775}}$ congruency: F1, 13 = 0.94, p = 0.349, ${\eta }_{\mathrm{p}}^2=0.068$ discriminability × congruency: F1, 13 = 0.05, p = 0.826, ${\eta }_{\mathrm{p}}^2=0.004$
duration of fixation on the flankera	M = 225 ms; s.d. = 199 ms	M = 249 ms; s.d. = 131 ms	M = 256 ms; s.d. = 101 ms	M = 288 ms; s.d. = 102 ms	discriminability: F1, 13 = 3.703, p = 0.106, ${\eta }_{\mathrm{p}}^2=0.189$ congruency: F1, 13 = 0.035, p = 0.855, ${\eta }_{\mathrm{p}}^2=0.033$ discriminability × congruency: F1, 13 = 0.151, p = 0.704, ${\eta }_{\mathrm{p}}^2=0.011$

^aAnalysis based on the data of the 14 participants who showed fixations on the flanker in each combination of the factors discriminability and congruency; M = mean; s.d. = standard deviations of the mean; significant effects are marked in bold font.