Table 4.
Number of observations, average preceding fixation duration and incoming saccade length
| Comprehension Items | ||||||
|---|---|---|---|---|---|---|
| IL Replication | Undersweep Skip Comparison | |||||
| FNR | FR | FR | FS | FR | FS | |
| IL | IL | US | US | |||
| N | 22,127 | 2,447 | 868 | 968 | 409 | 433 |
| PFD | 251.0 (102.5) | 265.0 (111.6) | 266.8 (125.3) | 218.9 (91.8) | 289.1 (137.8) | 260.1 (122.1) |
| Saccade length | 7.7 (2.4) | 6.3 (2.5) | 6.3 (2.5) | 5.7 (2.3) | 5.8 (2.2) | 5.1 (1.8) |
| Provo Corpus | ||||||
| N | 70,750 | 5,874 | 977 | 1,453 | 607 | 851 |
| PFD | 218.0 (82.0) | 230.5 (87.8) | 225.9 (85.8) | 195.0 (80.1) | 246.4 (93.7) | 225.6 (81.9) |
| Saccade length | 7.5 (2.4) | 6.7 (2.3) | 6.6 (2.3) | 6.3 (2.3) | 6.9 (2.1) | 6.4 (2.2) |
Note. PFD: preceding fixation duration (ms); FNR: forward non-return; FR: forward return; IL: intra-line; US: undersweep-fixation; SL: saccade length; FS: forward skip