Andy is asked to pick up a 100 pound box. He believes he can do it, though it is a little heavier than he is used to. This is an example of:

The ________ classifies people according to Carl Jung's personality types.

Fill in the blank(s) with the appropriate word(s).

Most parents can generally distinguish between the different types of cries their infants at ____ month(s)

a. 1 b. 2 c. 3 d. 4