Creating 3 (or more) conditions - Between subject design
I want to create multiple conditions to implement a between-subjects design with 3 conditions.
I've succesfully implemented this with 2 conditions before. Here it was quite easy because I programmed it to set even numbers to condition 1 and uneven numbers to condition 2. Of course, this doesn't work with 3 condtions. Hence, I'm looking for an easy way to implement this.
An obvious solution would be to randomly assign people to condition 1,2, or 3 but I want to have balanced groups which is of course not garanteed when using a fully random design.