| 9 |
Identical |
Identical |
Counter-balanced |
|
|
|
A > R |
Erickson, C.I. and King, I. 1917 |
|
Matched |
Identical |
N/A |
- |
 |
- |
A = R |
Russell, R.D. 1923 |
|
Matched |
Identical |
N/A |
- |
- |
 |
A = R |
Russell, R.D. 1923 |
| 11 |
Identical |
Identical |
Counter-balanced |
- |
 |
- |
R > A |
Haugh, O.M. 1952 |
| College |
Identical |
Equivalent |
- |
- |
 |
- |
R > A |
Brown, J.I. 1948 |
| Poorest Reader |
Identical |
Identical |
Counter-balanced |
|
|
|
A > R |
Greene, E.B. 1934 |
| Total Group Minus Poorest Readers |
Matched |
Identical |
Counter-balanced |
|
|
|
R > A |
Greene, E.B. 1934 |
|
R > A |
Henneman, R.H. 1952 |
|
Independent |
Identical |
N/A |
- |
 |
- |
A > R |
Jester, R.E. and Travers,R.M.W. 1966 |
|
Independent |
Identical |
N/A |
- |
- |
 |
A = R |
King, D.J. 1968 |
|
Identical |
Equivalent |
Counter-balanced |
- |
- |
 |
A > R |
Larsen, R.P.and Feder, D.O. 1940 |