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Pre-test performance and performance change (mean ± SEM) in spatial extent of crowding for the control group and the two training groups.
| Pre-test (× x-width) |
Post-pre ratio |
Retention/Pre ratio |
|
| Control | 2.66 ± 0.29 | 1.09 ± 0.11 | / |
| With-repetition | 3.14 ± 0.31 | 0.71 ± 0.05 | 0.73 ± 0.03 |
| Without-repetition | 2.84 ± 0.38 | 0.75 ± 0.08 | 0.69 ± 0.09 |
For the without-repetition group, retention/pre ratio was calculated based on the five observers who returned for the retention-test.
