[solved] Present both pictures and words randomly in a IAT-experiment

Dopamine

Hi all!

I'm working on an IAT experiment for my university internship.

The first two blocks of trials works fine (the first block consist in only words that the partecipants have to classify, whereas the second block consist in only pictures).

Now, I'm trying to create a block that merges words and pictures that it will be presented in random order, but when I run it, the stimuli overlaps like this:

I'm a newbie in programming, so I cannot figure out how to use the "if statements" to present the stimuli randomly without the overlapping.

Can someone help me to solve this problem?

Thank you in advance,

Best regards.

PS: sorry for my raw english

Dopamine

No one can help me?

eduard

Hi,

Basically, you need a variable in your loop that keeps track whether an image or a face should be presented. Let's call it stim_type. In your trial_sequence, you will have then two sketchpads, one for the image, one for the word. In the run if fields you can then add something like [stim_type]='word' for the words and [stim_type] = 'image' for the images.

Does this make sense to you? If not, please give us a little more detail on your experiment. Then, my answer will also be a little more specific.

Best,

Eduard

Dopamine

Thank you so much!

Now it works pretty good!