The _____ is sometimes called the emergency center of the body

When people are unable to move from disconnection to connection, the resulting combination of immobilization and isolation may in fact become like a ___________ and contribute to psychological anguish

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

An experimenter wants to determine if taking a specific amount of the drug Prozac relieves depression. Which element will be most in need of an operational definition in this study??

a. ?The dependent variable b. ?The independent variable c. ?The inferential statistic d. ?An experimental confound