[solved] about visual search exp

jenny

Thanks for your great program!!
I am going to prepare a visual search experiment. In which, I need to randomly show 5/9/17 letters on the display in each trial, meanwhile the items should be randomly assign to 36 different plot.
I had already build a gaze cue exp. as the suggestions in Mathot_OpenSesame_Tutorial.pdf, but I still cannot figure a good way to do my exp. Could you teach me how to use the setting in loop/sequence, or script to do it?

sebastiaan

Hi Jenny,

To create a visual search task you will need to use some Python code, so it's not the easiest thing in the world. The sketchpads are not flexible enough to create these types of fully randomized displays (or at least not in a convenient way, it's theoretically possible to do it).

A demonstration visual search task is included in the examples as horowitz_wolfe_1998.opensesame, so you could use that as a starting point. If you don't have any experience with Python code, you may want to read A Byte of Python.

If you have any specific questions, don't hesitate to post them here. In that case, make sure to describe in detail what you want to do.

Good luck!

Cheers,
Sebastiaan