H  M  T  I  R  S  M  I  E
                         i  a  e  n  e  e  o  n  x
                         s  t  s  s  g  l  r  t  p
                         t  u  t  t  r  e  t  e  e
                         o  r  i  r  e  c  a  r  c
                         r  a  n  u  s  t  l  a  t
                         y  t  g  m  s  i  i  c  a
                            i     e  i  o  t  t  n
                            o     n  o  n  y  i  c
                            n     t  n        v  y
                                  a           e
                                  t
                                  i           C
                                  o           o
                                  n           m 
Pre-Experimental Designs
 1. One-Shot Case Study  -  -           -  -     -      
 2. One-Group Pretest    -  -  -  -  ?  +  +  -  -
    Posttest Design
 3. Static-Group         +  ?  +  +  +  -  -  -  -
    Comparison

True Experimental Designs
 4. Pretest-Posttest     +  +  ?  +  +  +  +  ?  1 
    Control Group 
    Design
 5. Posttest-Only        +  +  +  +  +  +  +  +  1
    Control Group 
    Design
 6. Solomon Four-        +  +  +  +  +  +  +  +  1
    Group Design

Quasi-Experimental Designs
 7. Nonequivalent        +  +  +  +  ?  +  +  -  -
    Control Group 
    Design
 8. Time-Series          -  +  +  ?  +  +  +  +  -
    Experiment
 9. Equivalent Time-     +  +  +  +  +  +  +  +  -
    Sample Design
10. Counterbalanced      +  +  +  +  +  +  +  ?  ?
    Designs
11. Separate-Sample      -  -  +  ?  +  +  -  -  -
    Pretest-Posttest 
    Design
12. Separate-Sample      -  -  +  ?  +  +  -  -  -
    Pretest-Posttest 
    Control Group Design
13. Multiple Time-       +  +  +  +  +  +  +  -  ?
    Series Design
 

Adapted from: Campbell, Donald t. & Stanley, Julian C. (1963). Experimental and quasi-experimental designs for research. Chicago: Rand McNally & Company.

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