| Stimulus | Stimulus Form | Example |
|---|---|---|
| A | Stimulus name | The name of a stimulus vocalized by the researcher, such as “harp” or “guitar.” |
| B | Stimulus picture card | An 8 cm × 8 cm laminated card depicting a real-life photograph of an individual stimulus, such as a harp or guitar. |
| C | Category picture card | An 8 cm × 8 cm laminated card depicting multiple exemplars of a category. For example, a musical instrument category card contained six instruments, such as a piano and drum. |