User`s guide

E-Prime User’s Guide
Chapter 2: Using E-Studio
Page 39
The table below illustrates how a List with three elements (values A, B, and C) might be sampled
using the different methods described above. The last three methods (Counterbalance, Offset,
and Permutation) select base modulus of the subject number by number of condition sequences
for the subject number. For example, if counterbalanced with three conditions, subjects 1, 4, and
7 would sample from row 1, subjects 2, 5, and 8 would sample from row 2, and subjects 3, 6, and
9 would sample from row three. In contrast, the Permutation condition with 3 conditions has 6
possible sequences. Subjects 1, 7, and 13 would have the first order, subjects 2, 8, and 14 would
have the second, etc.
Selection
Sample Sequential
Random
(without
replacement)
Random with
replacement
Counter-
balance Offset Permutation
1 A B B Sub 1= A Sub 1 = ABC Sub 1 = ABC
2 B C C Sub 2 = B Sub 2 = BCA Sub 2 = ACB
3 C A B Sub 3 = C Sub 3 = CAB Sub 3 = BCA
4 A C C Sub 4 = A Sub 4 = ABC Sub 4 = BAC
5 B A B Sub 5 = B Sub 5 = BCA Sub 5 = CAB
6 C B A Sub 6 = C Sub 6 = CAB Sub 6 = CBA
To set the sampling mode, click the Properties button in the DesignList. In this case, we will
select random without replacement and select two cycles of samples. On the Selection tab, set
the Order to “random.” On the Reset/Exit tab, reset the List after all samples have been run (12
exemplars; 4 Word, and 8 NonWord), and exit the List after two cycles (for a total of 24 trials).
The DesignList will display a summary describing the sampling method, the number of samples,
and the selection method.