Assigning participants to one of 2 conditions

Hi,

just a thought - would it not be easier to swap button responses halfway through to control for handedness and randomise the order of which button response combination starts first? For example, you need overall 40 trials (made-up number) and therefore have 40 trials in one combination and 40 trials in the other.

If you have contact to participants beforehand you could assign numbers to each of them and let them type in that number. Depending on which number it is, even or odd maybe, they either take part in experiment 1 or 2, which you can do via the "jump to question" option in the survey script. An example is here: www.psytoolkit.org/doc2.0.9/online-survey-syntax.html#randomjump