According to Dr. Lyles, PTSD symptoms only occur in a minority of patients exposed to trauma, so something must be different with those who develop PTSD.

Karin declares a major in physical education, then decides this is impractical and switches to business. She does not enjoy business, so she transfers to psychology. What term is used to describe what Katie is experiencing?

a) moratorium b) dissociation c) stagnation d) identity diffusion

The blastocyst forms during the ______________

a. germinal period b. embryonic period c. fetal period d. second trimester