Table 1.
Numerical ratios presented to infants in Experiment Series 1
| Habituation | Test | ||
|---|---|---|---|
| Discriminable | Non-Discriminable | ||
| # of dots | # of dots (Habituation:Test Ratio) | ||
| Experiment 1a | |||
| Subset A | 5 | 10 (.50) | 7 (.71) |
| Subset B | 7 | 7 (1.00) | 10 (.70) |
| Superset | 12 | 17 (.71) | 17 (.71) |
| Experiment 1b | |||
| Subset A | 5 | 10 (.50) | 6 (.83) |
| Subset B | 7 | 7 (1.00) | 9 (.78) |
| Subset C | 8 | 8 (1.00) | 10 (.8) |
| Superset | 20 | 25 (.80) | 25 (.80) |
| Experiment 1c | |||
| Subset A | 5 | 10 (.50) | 6 (.83) |
| Subset B | 6 | 6 (1.00) | 8 (.75) |
| Subset C | 5 | 5 (1.00) | 6 (.83) |
| Subset D | 4 | 4 (1.00) | 5 (.80) |
| Superset | 20 | 25 (.80) | 25 (.80) |
Note. The number in parenthesis is the relationship between the habituation and test display (obtained by dividing the number of dots shown during habituation by the number of dots shown during test). The finest ratio that 9-month old infants have been shown to discriminate is 2:3 (0.66; Lipton & Spelke, 2003; Lipton & Spelke, 2004).