Early-onset Alzheimer's disease differs from late-onset in that ...

[KWilfred]

Early-onset Alzheimer's disease differs from late-onset in that
 
  a. it appears to be caused by rare genetic mutations.
  b. symptoms invariably involve delusions and assaultive behavior.
  c. genetics play little or no causal role.
  d. environmental factors have no impact on the onset or the progression of the disorder.

Question 2

Childhood anxiety disorders are associated with which of the following factors?
 
  a. A deficit in conditionability to aversive stimuli.
  b. Maladaptive learning from an underprotective parent.
  c. Refusing to go to school.
  d. Parental substance abuse.

[Jadwiga9]

Answer to Question 1

a. it appears to be caused by rare genetic mutations.

Answer to Question 2

c. Refusing to go to school.