hi Melissa.
Interesting study you're planning. It seems that you would like to present a fixed list of holidays, such as the one you posted earlier, rather than allowing each participant to generate the list of holidays themselves.

At present, to my knowledge MediaLab and DirectRT do not enable participants to drag and drop an object from one side of the screen to the next, such as each holiday manually grouped into meaningful clusters.

However, it is possible to show the full list, provide fixed scale or open-ended response box and then instruct each to "enter a 1 next to all the holidays during you spend with family" and "enter a 2 next to all of the holidays during which you spend with friends" etc.?

The above is just one example; it assumes that you prescribe the sort groups (family, friends, quiet, etc)

If you want to leave the number of sort groups as flexible as possible (are not steering their responses into family,friend, etc. groups, you could allow a given participant to create up to 15 groups (because it would be possible to assign each holiday to its own group), you could do that, too.

You could also instruct them to limit their groups to at least 2 but no more than say 8.

Either way, the approach is possible, would keep all holidays listed on one page, would provide sorting flexibility, and would record how long it took a participant to complete the task.

Is something like the above tenable for your research?