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Experiment 4: Number of Infants as a Function of Experimental Group and Dependent Measure
| Group | −2 | −1 | 0 | +1 | +2 |
|---|---|---|---|---|---|
| Manual act | |||||
| Human intervention | 0 | 0 | 0 | 1 | 12 |
| Natural covariation | 1 | 1 | 3 | 5 | 4 |
| Manual act + predictive looking | |||||
| Human intervention | 0 | 0 | 0 | 2 | 10 |
| Natural covariation | 0 | 0 | 2 | 5 | 2 |
Note. Infants not producing a criterion behavior on either trial are not included in the table. The number of infants who did not produce criterion responses in each row are, respectively, 3, 2, 4, 7.
