The groupassignment attribute determines how participants are assigned to between-subject conditions.

Applies to

<expt> <variables>

Syntax

Parameters

Remarks

Between-subject groups can be defined using the expt or variables elements. Participants can be assigned to between-subjects groups based on the numeric subject id entered when launching the script, or by random assignment. This attribute specifies which method to use. By default, the subject id is used.

Examples

The following uses random group assignment:

<variables>
/ group = (1 of 2)(block1=foo; block2=bar)
/ groupassignment = random
</variables>