Which of the following exemplifies the Hawthorne effect?
A. Cancer patients participate in therapy sessions and talk about their worries to improve
their mental health.
B. Cancer patients volunteer for an experimental treatment and report improved mood to
the researchers during the first few days of the treatment.
C. Doctors treating those with terminal cancer expect married patients to live longer than
unmarried patients.
D. Patients who know they have cancer act differently from patients with undiagnosed
cancer.