Exam 5: Cognitive Development in Infancy

In which of the following substages of sensorimotor development do infants become intrigued by the many properties of objects and by the many things they can make happen to objects?

Two-year-old Sarai uses the word "doll" to refer to her own Cabbage Patch doll but does not use the word to refer to her sister's Barbie doll. Sarai's error is known as

Farah showed her baby a colorful block. She then hid the block and showed it to the baby again and repeated the activity for some time. After the first few attempts, the baby, who initially paid close attention to the block, became disinterested in the block. In the context of attention, this scenario most likely demonstrates the process of