The additive model of the diathesis stress theory proposes that
a. people with a very high level of a diathesis may need a very large amount of stress to develop the disorder.
b. people with a very high level of a diathesis may need only a small amount of stress to develop the disorder.
c. someone with no diathesis will never develop the disorder.
d. someone with no genes for the disorder will never develop the disorder.
