The average age of menopause is:

The ossicles of the middle ear transmit vibrations to the ______

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

Rusbult's (1983) research on college-age dating couples showed that rewards played a role in determining satisfaction ________ and that costs played a role ________

a. only in the first few months; always b. throughout the relationship; only in the first few months c. only after the first few months; always d. throughout the relationship; only after the first few months