Yes- it is technically called, "blunting of affect" and can be caused by internal or external reasons. A person can be devoid of emotions due to a traumatic event in their lives or a dysfunction in brain chemistry. Usually the people who become this way from external factors can recover their emotions through the care of trusted others.
Some common emotions are: anger, hatred, fear, frustration, jealous, etc.
Yes, one part of the Apgar test which is given soon after birth is the grimace...