Table 4.
Mean number of category-based inductive inferences in the experimental conditions (out of 12; chance is 6). SDs in parentheses.
| Expt | Description | Child Experimental | Child Control | Child E>C? | Adult Experimental | Adult Control | Adult E>C? |
|---|---|---|---|---|---|---|---|
| 1 | Sloutsky, Kloos, Fisher (SKF) replication | 3.31* (1.74) | --- | N/A | 9.00* (3.73) | N/A | |
| 2 | Ontological distinction, familiar properties | 9.37* (3.28) | 5.50 (2.68) | yes | 11.94* (0.25) | 3.81* (2.49) | yes |
| 3 | Ontological distinction, novel properties | 8.13* (3.86) | 4.88+ (2.31) | yes | 8.81* (3.90) | 2.63* (1.86) | yes |
| 4 | Basic-level distinction, novel properties | 7.88+ (3.91) | 5.00 (3.27) | yes | 9.06* (3.77) | 3.25* (1.91) | yes |
| 5 | SKF categories with Expts 2–4 stim pix | 3.25* (2.62) | 5.00 (2.90) | no | 7.69 (4.70) | 3.56* | yes |
| 6 | SKF categories with Expts 2–4 stim pix and procedure | 4.00* (2.56) | 4.13* (1.71) | no | --- | --- | |
| 7 | SKF categories with Expts 2–4 stim pix & disting. features | 5.56 (4.13) | --- | noa | --- | --- |
a
This comparison involves the control conditions of Experiments 5 and 6.
*
indicates significantly different from chance (p < .05);
+
indicates a non-significant trend (p < .10).