Benjamin is a two-month-old baby who accidentally discovers his thumbs. He waves them around for a while and then sticks one of them in his mouth. He repeats this for a few times. Benjamin's behavior is an example of________.
A) a primary circular reaction.
B) a secondary circular reaction.
C) a tertiary circular reaction.
D) echolalia quaternary circular reaction.

Question

Quizplus · Accepted Answer

Benjamin's behavior is an example of a primary circular reaction, which occurs in the sensorimotor stage of development (from birth to about 2 years old). This stage involves simple motor habits centered around the infant's own body; in this case, discovering and sucking his thumb.

Benjamin Is a Two-Month-Old Baby Who Accidentally Discovers His Thumbs