Two-month-old Amy is put in a chair and shown a series of pictures of fruit. After she has habituated to these pictures, the researcher shows her a picture of a monkey

What is a typical reaction to this new stimulation that the researcher can look for?
a. sucking rate increasing on a pacifier
b. sucking rate decreasing on a pacifier
c. hand motion increasing
d. hand motion decreasing

A. Sucking rate increases when infants see new stimuli.