[solved] Setting Up an Experiment
Having gone through the tutorial, I am still at a loss how to actually set up my experiment. I shall try and explain how I want to do it and any advice on how to go about setting it up would be very gratefully received:
Ok, so I have 30 backgrounds each a different scene (e.g. a picture of a living room). I also have images of 12 individual people, however, each image has three versions: one in which only contains the head of the person (Face-only trials), one in which only contains the body of the person (Body-only trials) and one in which contains the full body of the person (i.e. face and body combined –Full-body trials).
Now what I want to happen in each trial is that the background will be shown with a person (or part of a person) within the picture, at varying locations (i.e. left, centre or right). Is it possible to get opensesame to randomly pick a background and randomly pick a person stimulus and superimpose the image of the person (or part of a person) within the background image, at one of the three locations?
I want the backgrounds to be displayed an equal number of times within the experiment. Additionally, I also want the each person to be shown an equal number of times within the experiment. Furthermore and most importantly, I also want there to be equal numbers of Face-only, Body-only and Full-Body trials within the experiment.
I want this to be random for each participant and I don’t want hundreds of trials, if there is a large volume of trials a break half way through the trials would be ideal. How do I go about setting this up in opensesame? I'm sorry for all the questions!
Thank you so much for your help,