Table 1.
Summary of all stimulus pairs in Experiments 1 and 2.
| Triplet anchor | Pair | Stimulus distance | Role | |
|---|---|---|---|---|
| Experiment 1 | ||||
| dɑ | pɑ | dɑ | 3.92 | Far |
| pɑ | pɑ | 0 | foil (same) | |
| Ʒɑ | dɑ | 2.32 | Near | |
| dɑ | dɑ | 0 | Same | |
| dƷɑ | vɑ | dƷɑ | 3.96 | Far |
| vɑ | vɑ | 0 | foil (same) | |
| dɑ | dƷɑ | 2.88 | Near | |
| dƷɑ | dƷɑ | 0 | Same | |
| kɑ | rɑ | kɑ | 4.08 | Far |
| rɑ | rɑ | 0 | foil (same) | |
| hɑ | kɑ | 2.27 | Near | |
| hɑ | hɑ | 0 | foil (same) | |
| kɑ | kɑ | 0 | Same | |
| lɑ | ʧɑ | lɑ | 4.04 | Far |
| ʧɑ | ʧɑ | 0 | foil (same) | |
| gɑ | lɑ | 1.96 | Near | |
| gɑ | gɑ | 0 | foil (same) | |
| lɑ | lɑ | 0 | Same | |
| lɑ | kɑ | 2.05 | foil (different) | |
| nɑ | vɑ | nɑ | 4.24 | Far |
| kɑ | nɑ | 2.15 | Near | |
| nɑ | nɑ | 0 | Same | |
| nɑ | kɑ | 2.15 | foil (different) | |
| tɑ | bɑ | tɑ | 3.99 | Far |
| bɑ | bɑ | 0 | foil (same) | |
| dƷɑ | tɑ | 2.28 | Near | |
| tɑ | tɑ | 0 | Same | |
| Ʒɑ | fɑ | Ʒɑ | 4.04 | Far |
| fɑ | fɑ | 0 | foil (same) | |
| tɑ | Ʒɑ | 2.28 | Near | |
| Ʒɑ | Ʒɑ | 0 | Same | |
| Experiment 2 | ||||
| dɑ | pɑ | dɑ | 3.92 | Far |
| pɑ | pɑ | 0 | Foil (same) | |
| Ʒɑ | dɑ | 2.32 | Near | |
| Ʒɑ | Ʒɑ | 0 | Foil (same) | |
| dɑ | dɑ | 0 | Same | |
| dƷɑ | vɑ | dƷɑ | 3.96 | Far |
| vɑ | vɑ | 0 | foil (same) | |
| dɑ | dƷɑ | 2.88 | Near | |
| dƷɑ | dƷɑ | 0 | Same | |
| dƷɑ | tɑ | 2.28 | Foil (different) | |
| kɑ | rɑ | kɑ | 4.08 | Far |
| rɑ | rɑ | 0 | foil (same) | |
| hɑ | kɑ | 2.27 | Near | |
| hɑ | hɑ | 0 | Foil (same) | |
| kɑ | kɑ | 0 | Same | |
| nɑ | vɑ | nɑ | 4.24 | Far |
| kɑ | nɑ | 2.15 | Near | |
| nɑ | nɑ | 0 | Same | |
| nɑ | kɑ | 2.15 | Foil (different) | |
Stimuli were organized in terms of triplets of same, far, and near stimuli relative to an anchor. Foil stimuli were selected to defeat discrimination judgments based on stimulus position in a discrimination trial. Foils may serve that purpose for more than one triplet in the table. Stimulus distance is the perceptually warped stimulus distance from Jiang et al. (2007). Experiment 2 stimuli were a subset of those in Experiment 2.