Answer:
The-A-Not-B
Explanation:
According to my research on studies conducted by child develop-mentalists, I can say that based on the information provided within the question Cindy was making a The-A-Not-B error. This is an error committed by infants of ages 1 year old or younger, in which they perceive an object that is out of their sight as non-existent. This error is usually not made anymore after the age of 1 year old. Which is why the Cindy keeps looking under the first blanket to see if the toy reappears.
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