___________ is the desire to make significant accomplishments by mastering skills or meeting high standards.

In class a baby chewing on a book was given as an example of:

a. deferred imitation b. centration c. a schema d. a primary circular reaction

__________ and __________ are two common techniques used in traditional cultures to comfort a crying infant.

A. Walking; caressing B. Rocking; singing C. Breast-feeding; swaddling D. Lightly bouncing; patting