Table 1.
Descriptive statistics of response time (RT) scores and model parameters.
| Task/Material | Excluded Trials | Descriptive Statistics | Ex-Gaussian Model | Diffusion Model | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Post-Err | Extreme | M RT | SD RT | Acc | μ | σ | τ | a | ν | T er | |
| Search | |||||||||||
| Numbers | 0.035 (0.041) | 0.009 (0.030) | 373 (32) | 74 (14) | 0.971 (0.023) | 307 (33) | 34 (11) | 66 (19) | 2.95 (0.54) | 0.013 (0.002) | 263 (23) |
| Letters | 0.068 (0.080) | 0.027 (0.059) | 372 (33) | 78 (17) | 0.954 (0.041) | 300 (28) | 32 (12) | 71 (20) | 2.87 (0.49) | 0.012 (0.002) | 257 (21) |
| Symbols | 0.063 (0.032) | 0.011 (0.013) | 459 (39) | 78 (17) | 0.945 (0.031) | 388 (33) | 54 (17) | 66 (19) | 2.86 (0.35) | 0.010 (0.001) | 332 (21) |
| Comparison | |||||||||||
| Numbers | 0.053 (0.034) | 0.002 (0.006) | 838 (111) | 204 (63) | 0.949 (0.033) | 655 (71) | 80 (29) | 185 (60) | 4.40 (0.89) | 0.007 (0.001) | 549 (57) |
| Letters | 0.074 (0.041) | 0.005 (0.008) | 967 (148) | 234 (65) | 0.930 (0.041) | 751 (96) | 91 (29) | 212 (67) | 4.50 (0.91) | 0.006 (0.001) | 645 (79) |
| Symbols | 0.100 (0.054) | 0.020 (0.017) | 1143 (156) | 303 (74) | 0.917 (0.057) | 849 (95) | 138 (43) | 286 (88) | 5.01 (0.95) | 0.005 (0.001) | 726 (72) |
| Substitution | |||||||||||
| Num → Sym | 0.041 (0.032) | 0.015 (0.019) | 1343 (192) | 369 (92) | 0.973 (0.025) | 1002 (175) | 154 (62) | 349 (107) | - | - | - |
| Let → Num | 0.036 (0.030) | 0.007 (0.009) | 1243 (190) | 332 (87) | 0.970 (0.031) | 947 (167) | 124 (54) | 311 (105) | - | - | - |
| Sym → Let | 0.005 (0.009) | 0.036 (0.030) | 1158 (126) | 300 (75) | 0.967 (0.029) | 887 (119) | 111 (42) | 275 (79) | - | - | - |
All statistics given are M (SD) across persons. Post-Err = post-error trials. Extreme = extreme values according to liberal Tukey (1977) criterion. MRT = mean response time, SDRT = within-person standard deviation in RT, Acc = Accuracy.