International mortality rates that have been age-adjusted indicate that the country with the lowest annual mortality is ______

Research has found a link between _____ and creative thinking and greater productivity. This was demonstrated by your author in the discussion of composer Robert Schumann.

a.) Bipolar disorder b.) Unipolar disorder c.) Dysthymia d.) Mild psychological disturbances - hypomania

A delayed phase preference refers to

A) the propensity of adolescents to sleep too much. B) adolescents' changing sleep patterns. C) adolescents' propensities to return to infant sleep patterns. D) interruptions in adolescents' sleep.