[open] Dissertation: One-Shot Change Detection Task
I am hoping someone out there can help me as I am close to breaking point over my dissertation. Long story short - I have basically been given a dissertation topic/experiment because I wasn't allowed to do what I wanted and told to use OpenSesame for it despite never using it before or any of my lecturers having a clue how to use it either...
My experiment adopts a one-shot change detection analysis method that will measure accuracy and reaction time, consisting of four trial phases (20 trials in each phase). In each trial phase four images will appear (I have already grouped these in hopes of making life easier), a mask will appear, and the corresponding images (one of the four images would have changed) will then appear until a response is made. I will be using the Z key to indicate change and, M for no change.
- angry face is present - mask - angry face changes
- angry face is present - mask - other face changes
- angry face is present - mask - no change
- no angry face is present - mask - face changes
Therefore, although I want these to appear in a random order I still need the corresponding 'before and after' images to appear in the correct sequential order.
I read somewhere that I could probably do this by "having four sequences of the sketchpads and the sequence of sketchpads that are displayed is determined by a global variable that is set at random" but, this is a foreign language to me. Do any of you have a really simple tutorial to follow or able to completely dumb this down for me, please?