fish wrote:
when putting up walls in a basement, for hanging drywall, should the
frames be screwed into the [ceiling] floor joists? Or, should there
be a space left between the frame wall and the floor joists to allow
for movement/settlement?

Fasten it tight to the ceiling.You don't want the wall moving around.
If you finish the top of the wall to the drywall ceiling then you will
end up with cracks if you don't fasten it tight.

Tom in KY, make it right, build it tight.