Table 2. Pearson correlations between intelligence and time-estimation error for five different tone durations.
| Tone durations in milliseconds | |||||
| Intelligence tests | 100 | 200 | 500 | 1000 | 3000 |
| Arithmetic | −.28 (.000) | −.26 (.000) | −.25 (.000) | −.29 (.000) | −.22 (.002) |
| Self-rated math skill | −.31 (.000) | −.31 (.000) | −.30 (.000) | −.19 (.008) | −.10 (.168) |
| Digit span forward | −.14 (.040) | −.14 (.045) | −.18 (.011) | −.17 (.013) | −.11 (.125) |
| Digit span backward | −.09 (.225) | −.07 (.343) | −.07 (.325) | −.11 (.123) | −.12 (.087) |
| Similarities | −.01 (.926) | −.01 (.916) | −.00 (.973) | −.01 (.941) | −.05 (.478) |
Note. The Pearson correlations are presented with their p-values between brackets. N = 202 for all correlations, except those involving digit span backward, for which N = 201 (one subject failed to fill out this subtest). Spearman correlations were similar.