Picture to Show up every 20th trial
In my experiment, we have an arrow that cues the participant to the target location. I have the picture of the arrows set as variable view. Right now, the picture of the arrows is showing up every trial, but I want it to only show up every 20th trial. How do I do that?

Comments
Use the count_[itemname] variable in a "Run if"" or a "Show if". See:
*http://osdoc.cogsci.nl/3.1/manual/variables/#using-conditional-if-statements
*http://osdoc.cogsci.nl/3.1/manual/variables/#item-variables
So something like
([count_somename]+1)%20 = 0You can then use modulo to make it happen every 20th trial. The
+1is because the count_[itemname] variable start from 0.Best,
Jarik