According to Borkovec and colleagues, worry a) serves as an ...

[j.rubin]

According to Borkovec and colleagues, worry
 
  a) serves as an avoidance mechanism.
  b) is adaptive.
  c) increases psychophysiological signs of arousal.
  d) helps people remember traumatic images.

Question 2

One of the difficulties in conducting studies of the specific effects of methamphetamine is that
 
  a) its use is very rare.
  b) many users have also used other substances.
  c) individuals who use it are particularly likely to also use crack.
  d) most users live in rural areas.

[parker125]

Answer to Question 1

a

Answer to Question 2

b