Table 2.
Estimates of M, obtained by fitting the OGRE model (Equation 2, see text) to the distribution of k, the number of locations visited between visiting and revisiting the same location. M is taken to be an estimate of immediate memory span.
| Category | M | Chi2 |
|---|---|---|
| Manual search | ||
| S | 4.58 | 0.13 |
| SS | 4.49 | 0.03 |
| SD | 4.89 | 0.06 |
| SSD | 3.95 | 0.17 |
| SDD | 4.67 | 0.14 |
| Oculomotor Search (no delay) | ||
| S | 5.28 | 0.09 |
| SS | 5.19 | 0.16 |
| SD | 5.39 | 0.07 |
| SSD | 5.39 | 0.19 |
| SDD | 6.44 | 0.29 |
| Delayed Oculomotor Search | ||
| S | 5.47 | 0.24 |
| SS | 4.17 | 0.12 |
| SD | 4.94 | 0.11 |
| SSD | 4.34 | 0.05 |
| SDD | 5.09 | 0.16 |
Chi2 values indicate the goodness of the fit of the model to the data, where a value closer to 0 indicates a better fit (all p = n.s.).