Hi Nadia,

One way to go about completing this task would be to take advantage of the rand() feature. You can find more information about this feature here: http://www.empirisoft.com/directrt/h...dom_values.htm

Within the style column for each trial, you can call upon the rand() feature to use a random style out of the created styles within the experiment's style file.

For example, rand(1,2,3,4,5,6,7,8,9) or rand(1-9) will randomly call upon a number between 1-9. The number it chooses will identify with an ID in the style file (if placed within the style column).

Regards,
Trevor