Professor Johns is performing an experiment to test hypnosis as a treatment for smoking. He is ...

Professor Johns is performing an experiment to test hypnosis as a treatment for smoking. He is trying to decide which type of experimental design will be appropriate for the study. Which would you suggest?
 
  a. He should use a non-experimental design
  b. He should use a within-subjects design
  c. He should use a between-subjects design, so that each subject can act as their own control
  d. He should use a between-subjects design because of carryover effects

Question 2

Order effects result from
 
  a. which condition follows which
  b. the ordinal position of the condition
  c. between subjects designs
  d. control group designs

Question 3

Random allocation of subjects to groups
 
  a. Insures that the groups will be equal before the experimental manipulation
  b. Improves experimental reliability
  c. Occurs in a within-subjects design
  d. Interferes with a comparison between the experimental and the control group

Question 4

In a well-designed experiment, selection bias is controlled by
 
  a. The existence of a control condition
  b. The independent variable
  c. Random allocation of subjects to conditions
  d. Using a within-subjects design