Google Classroom

Problem
Human speech directed at infants, also known as baby talk, tends to use a higher pitch and slower tempo than standard speech and is known to accelerate language learning. Noting similarities between this infant-directed speech and the tone with which pet-owners address their dogs, researchers hypothesized that baby talk is not adopted due to the age of a given listener, but instead tends to be used when addressing any listener that is non-verbal.
Which finding, if true, would most directly support the researchers’ hypothesis?
Choose 1 answer:
Choose 1 answer:
(Choice A) People tend to raise their pitch and slow their tempo when speaking to adult humans who are non-verbal.
A
People tend to raise their pitch and slow their tempo when speaking to adult humans who are non-verbal.
(Choice B) People tend to speak to other verbal adults with a lower pitch and faster tempo.
B
People tend to speak to other verbal adults with a lower pitch and faster tempo.
(Choice C) Non-verbal adults tend to show less reactivity to baby talk than infants and children.
C
Non-verbal adults tend to show less reactivity to baby talk than infants and children.
(Choice D) People tend to view their pet as juvenile regardless of the pet’s actual age.
D
People tend to view their pet as juvenile regardless of the pet’s actual age.

(Choice A) People tend to raise their pitch and slow their tempo when speaking to adult humans who are non-verbal.

This finding would directly support the researchers' hypothesis that baby talk is not adopted due to the age of the listener, but instead tends to be used when addressing any non-verbal listener.