Table 2.

Experimental Session of Nonsocial Stimuli and Child-Directed Speech (CDS)

Stimulus	Duration	Type	Description of stimulus
Baby Bach Video	2 minutes	Non-social	Children’s music video with no social stimuli
Name Call	1 minute	Social	Up to 5 name call trials while Baby Bach video continued to play (Data not analyzed for the current study)
Video Story	1 minute	Social	Video of a female actor reading out of a novel storybook, as if reading to the child (book facing outward, actor directly facing camera)
Puppet Show	1 minute	Social	Live puppet show performed by female examiner
Nonsense Toy	1 minute	Social	Video of a female actor playing with and describing a novel toy using nonsense words