Table 4 Definitions of Stimuli

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.