In a true experimental study, the control group is the group that ...

[RYAN BANYAN]

In a true experimental study, the control group is the group that does what?
 
  a. Receives the experimental treatment
  b. Receives the placebo treatment
  c. Experiences the adverse results
  d. Experiences the reactive effects

Question 2

A study of a program to help people quit cigarette smoking had three groups of subjects. The first group received one supportive phone call 10 days after attending a program on strategies to resist smoking.
 
  A second group received a supportive phone call every week for 6 weeks after attending the program. A third group received no supportive phone calls after attending the program.
 
  In the above scenario, which of these properties of experimental research is evident?
  a. Quasi-experimental design with no control group
  b. Random assignment to research groups
  c. Manipulation of the treatment dose
  d. Control of extraneous variables

[bookworm410]

Answer to Question 1

ANS: B

Feedback
A The group that receives the experimental treatment is the experimental group, not the control group.
B In true experimental research, the control group is the group that receives the usual or a placebo treatment, rather than the experimental one.
C The occurrence of adverse results is not confined to the control group and, in fact, is more likely in the treatment group.
D Reactive (Hawthorne) effects are the effects of being studied, which can occur in both experimental and control groups.

Answer to Question 2

ANS: C

Feedback
A The group receiving no phone call is the control group.
B The scenario does not describe whether random assignment was used.
C The scenario describes manipulation of the independent variable by varying the interventions (doses) of phone calls.
D The scenario does not describe control of extraneous variables.