How to require a participant ID?

[Michael]

Hi,

Customizing the dialog box

My question concerns the extent to which the dialog box at the beginning of the experiment can be customized. In particular: Can items be selectively obligatory? For example, I would like to force my subjects to submit their participation code. As of now, you can start the experiment even if you leave all the items blank. Can the size of the dialog box be customized? I need to add more items and some of these are long questions. I fear that putting long questions in the dialog box will get…