Table 3. Mean error rates, response times, and number of fixations for single-digit and double-digit fraction pairs.
| Fractions | Fraction pair | Partial distance | Error rate | Response time | Number of fixations |
|---|---|---|---|---|---|
| Single-digit fractions | SD | 1 | 3.13 (6.88) | 2733 (954) | 6.70 (1.33) |
| 3 | 2.26 (5.08) | 2751 (877) | 6.75 (1.37) | ||
| SN | 1 | 4.52 (6.0) | 3245 (1158) | 7.57 (1.85) | |
| 3 | 3.75 (5.96) | 3100 (1222) | 7.17 (1.89) | ||
| CO | 1 | 6.17 (7.36) | 3696 (1327) | 8.58 (2.51) | |
| 3 | 4.96 (5.91) | 3534 (1235) | 8.26 (2.38) | ||
| IC | 1 | 38.88 (14.87) | 4187 (1720) | 9.38 (3.13) | |
| 3 | 19.53 (16.99) | 3991 (1528) | 9.01 (2.88) | ||
| Double-digit fractions | SD | n/a | 2.19 (3.38) | 2554 (688) | 6.28 (1.12) |
| SN | n/a | 0.64 (1.67) | 3006 (1047) | 7.12 (2.03) | |
| CO | n/a | 4.25 (8.15) | 3896 (1276) | 8.86 (2.62) | |
| IC | n/a | 17.99 (17.62) | 4138 (1422) | 9.41 (3.00) |
Note: Response times in ms. Standard deviations in parentheses. SD = same denominators; SN = same numerators; CO = congruent; IC = incongruent.