problem in an approach-avoid-inhibition experiment
I'm working on an experiment that involves approach, avoid and inhibition trials in response to emotional stimuli (negative, positive and neutral images). On some trials the participants have to press an "approach" key whenever a vertical line appears in the middle of the screen (and within the emotional image). Whenever the participant presses the approach key the image becomes larger as if moving towards them. On other trials, participants have to press an "avoid" key in response to a horizontal line appearing within the image. After pressing the avoid key, the image becomes smaller as if moving away from the participants. Additional, on some trials a "beep" sound appears alongside these target stimuli, indicating for participants not to press any key. The stop-signal beep always appears within a changing interval after the target stimuli (image + vertical/horizontal line).
At the moment I'm facing two problems:
In Opensesame's results excel file there are two (or even more) rows indicating errors, for example a row labeled "correct" and another labeled "correct_keyboard_response_1_1". Unfortunately, on some inhibitory trials, they show different results (i.e. one of them considers the response as correct and the other consider it as an error), so that I don't know which row to refer to. Since the interval between the appearance of the target stimuli and the stop-signal also depends on whether the participant made a mistake or not on the previous inhibitory trial, it is crucial to realize whether the program consider some trials as correct or as errors (for example on an inhibitory trial when the participant did press a key).
The sequence of the inhibitory trials is; target (sketchpad) -> sampler -> keyboard response -> 3 other sketchpads (with the image enlarged/diminished/same size) from which only one appears in accordance to the participant response (approach/avoid/no response). However, at the moment, on the inhibitory trials, if a participant presses any key before **the appearance of the stop signal, the image does not become larger or smaller (as it should), but only if the participant presses the key **after the appearance of the stop signal. I can;t find a way to make the image grow or diminish even if the participant pressed a button before the stop-signal appears.
I'd be grateful for your assistance as I couldn't find a way to solve these issues.
I could upload the experiment if it could be of help.
Sorry for this long description, hope I managed to properly explain things.
Thank you for your help!