Experimental Psychology Case Study
Experimental Psychology Case Study
PSY-452-Experimental Psychology
Matched-Subjects Design
1) Separate the 40 participants listed below into two groups of 20, in which each group has an equal number of men and women (10 M, 10 F each). Name the first group A and the second group B.
2) Match 1: Random Assignment
a. Use a random numbers table to accomplish the first match, utilizing Group A and Group B. Please search for a random numbers table on the internet or use the one in the back of the textbook to successfully complete this section of the assignment.
b. Start anywhere in the table and proceed in any direction that you like.
c. Odd numbers put the subjects in Group A; even numbers in Group B.
d. When one group is filled, the rest go into the other group.
3) Match 2: Range Matching 1
a. Return to the original Group A and Group B lists.
b. Separate the participants into two groups by gender using range matching.
c. Match as many pairs of female participants as possible: find a match and randomly assign one to the Group A, and the other to the Group B.
d. Next, do the same for the male participants.
4) Match 3: Range Matching 2
a. Return to the original Group A and Group B lists.
b. Match participants by two variables: gender AND weight.
c. Decide on your acceptable ranges in advance (i.e., within 5 pounds for females and 10 pounds for males).
d. Find a match and randomly assign one to the Group A, and the other to the Group B.
e. Form a Group C for individuals who do not match.
5) Match 4: Range Matching 3
a. Return to the original Group A and Group B lists.
b. Match the participants on all three variables (gender, weight, and height).
c. Decide on your acceptable ranges in advance (i.e., within 5 pounds for females and 10 pounds for males).
d. Find a match and randomly assign one to Group A, and the other to Group B.
e. Form a Group C for individuals who do not match.
6) Match 5: Rank Order Matching
a. Using the original list of 40 participants, split the participants by gender (all male group and all female group).
b. Then rank groups by weight OR height, using rank-ordered matching (i.e., heaviest to lightest or tallest to shortest).
c. Find a match and randomly assign one to the Group A, and the other to the Group B.
40 Participants to be matched:
Name Gender Weight (lbs.) Height (in.)
#1. Anna BoFanna F 110 60
2. Sandy Beach F 140 70
3. Chuck Wagon M 200 72
4. Ken Garoo M 180 70
5. Seymour Clearly M 190 71
6. Phil O’Dendron M 210 74
7. Rhoda Dendron F 120 65
8. Pete Moss M 150 68
9. Howie Dooit M 160 70
10. Willy Makeit M 180 70
11. Betty Won’t F 100 63
12. Al Gebra M 190 72
13. Carol Ofthebells F 95 55
14. Harold Bethyname M 240 76
15. Andy Walkswithme M 250 75
16. Rod Andreel M 220 72
17. Stu Potts M 190 69
18. Sharon Sometimetogether F 108 65
19. Clara Asabell F 115 68
20. Allyson Wonderland F 118 68
21. April Showers F 110 63
22. Ben Dover M 190 69
23. Hugh Gottabekiddinme M 200 72
24. May Flowers F 130 70
25. June Blossoms F 100 60
26. Helen Highwater F 135 68
27. Sam Iam M 195 69
28. Mike Robiology M 215 72
29. Maye Beeso F 134 67
30. Polly Warner-Cracker F 109 54
31. Rick O’Chet M 140 64
32. Bill Board M 180 70
33. I. C. Freeze M 190 71
34. Barry Um M 200 72
35. Raye Dium F 112 67
36. Helena Baskit F 114 66
37. Summer Rayne F 96 65
38. Deniece Denephew F 122 69
39. Goldie Lox F 105 63
40. Cindy Rella F 124 68
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