An infant sees an object get hidden behind a screen, then a second object be placed behind the screen. If the screen drops and there are three objects, instead of the two the infant saw, he will ______.
a. stare longer, suggesting they at least know 1 + 1 = 2
b. start to cry, as the extra object will frighten them
c. not react with any interest, suggesting that they can’t process simple mathematics yet
d. look expectantly at the researcher, waiting for them to count the objects out loud
Ans: A
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