Harriet, a student nurse, was at first extremely uncomfortable at the sight of blood. After a month of working in the emergency room, she is no longer upset when confronted with serious injuries. Harriet has undergone

79.
a. time out.
b. shaping.
c. desensitization.
d. trial-and-error learning.

ANSWER: c
a. time out.
b. shaping.
c. desensitization.
d. trial-and-error learning.

ANSWER: c