Some companies sell special educational programs designed to be watched by infants. Which of the following is true regarding these programs?
A) They significantly stimulate brain development.
B) They lower the age at which children first speak, but do not otherwise affect brain development.
C) They do not stimulate cognitive development, but are otherwise harmless.
D) They can actually slow down vocabulary and language development.
Answer: D
Rationale: The more time infants spend viewing educational television, the lower their verbal comprehension and performance scores achieved when tested at age 6 or 7 years. Shows based mostly on pantomime or simplified sing-along songs (rather than narrative) have also been negatively correlated with vocabulary development between 6 months and 2½ years of age.
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