Bi-manual response & feedback in Opensesame
I am trying to design an experiment where in the responses are to be taken bi-manually. Basically it is a target detection task to investigate the effect of laterality and the participants are required to press 'z' & 'm' simultaneously with both the hands if the target is present. For trials where the target is not present, they are required to press 'a' & 'l' in the same way. But I am having an issue while giving feedback about their performance. As there are 2 correct responses for every single trial, any of these 2 should be taken as a correct response. In normal scenarios there is just one response that is correct. Here as there are 2 responses that are correct, I find it difficult to code correct responses accordingly. Can anybody help me to sort this issue.