Which disorder is associated with having too few serotonin and norepinephrine receptors?

In the context of a child's acquisition of particular meanings for words, which of the following exemplifies the principle of contrast?

a. A child says "white" when a parent says "black." b. A child gets confused when his mother calls his teddy bear "Theodore" instead of "Teddy." c. When a child says that he "runned home," a parent says "you ran home." d. One child has no difficulty learning word meanings, while a child just one year younger struggles.

Lance's doctor told him 15 years ago that if he did not change his lifestyle, the drinking, smoking, and drug abuse were going to kill him. Lance didn't heed the warning, claiming that if he died no one would miss him anyway, and now he has died

Lance's situation is best considered to be an example of: a. suicidal erosion b. passive death c. assisted suicide d. unilateral death