nested loop problem

Pia

edit: Solved it with just nesting the variables inside each other: file="[color_of_draw[jar_nr]].png"

Hi everyone,

first of all thanks for OpenSesame. I would like to build the following experiment and have a (hopefully little) problem with it:

First, I show participants the contents of a jar (red or blue marbles). Then I show them individual marbles and they have to indicate whether they think the marble comes out of the jar which they have been shown.

So therefore I have two loops. One indicating the jar (jar1, jar2, jar3,…) which the participants are shown in the beginning and then a loop for the presentation of the individual marbles (for jar1: red, blue, blue, blue,…., for jar2: red, red, red, blue,…. and so on).

Now the problem is I managed to set up both loops individually but not together.

Like, if I just want to set up the loop where the participants are shown individual marbles, I have a variable [color_of_draw] which contains the sequence (red, blue, blue, …) and then the images (red.png or blue.png) are shown like defined.

If I just want to show the jars, I define a variable [jar] in that loop which contains jar1, jar2, etc. and then I show the corresponding picture (like jar1.png).

But now I want to fit my loop of the single draws/marbles into the higher order loop of different jars. But then I can’t use my variable [color_of_draw] anymore because the color of the draw depends on the jar.

I tried to build different variables like jar1, jar2, jar3 instead of color_of_draw and put the order of the red and blue draws in the different lines, but the problem is, I can’t load the image jar[jar].png (where [jar] indicates which jar the marble is out of) at this place because it is called blue.png.

Any suggestion on how to solve this problem is appreciated!

Thank you!
Pia

sebastiaan

edit: Solved it with just nesting the variables inside each other: file="[color_of_draw[jar_nr]].png"

Great, and thanks for letting us know!