Most family therapists who work with couples concentrate on __________

A) exploring the marital partners' childhoods to understand the source of the current conflicts.
B) desensitization techniques to help the marital partners become more tolerant of each other.
C) changing the behavior of the person in the marriage who is the source of the couple's problems.
D) improving the couple's patterns of communication so they can find better ways of solving their problems.

The superego is the part of personality that

A) mediates between the demands of biology and the external world.
B) operates on the reality principle.
C) generates feelings of guilt.
D) performs all of these functions.

Researchers have found that when an identical twin has unipolar depression, there is a 38 percent chance that the other twin has already had or will eventually have the same disorder. A fraternal twin is only 20 percent likely to have the same disorder. This finding:

A) proves that unipolar depression does not have a genetic factor.
B) supports the idea that people may inherit a predisposition for developing unipolar depression.
C) shows that spending time with people who have unipolar depression increases an individual's own risk for developing the same disorder.
D) demonstrates that if one sibling has unipolar depression, other siblings of the same sex are likely to develop the same disorder.

ECT has changed over the years. Patients given this treatment now may receive:

A) higher levels of current.
B) muscle relaxants.
C) oxygen to prevent memory loss.
D) insulin.

Amniotic fluid develops from

A) blood.
B) dead cells.
C) maternal wastes.
D) the fertilized egg