Picture to Show up every 20th trial

jonesfm

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?

Jarik

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 = 0

You can then use modulo to make it happen every 20th trial. The +1 is because the count_[itemname] variable start from 0.

Best,
Jarik