If U r asked for direction, would U say:
"go to the T-junction at the end of this road
and turn left. Then take the next left.
The house is on the same side, opposite
the lamp post."
OR
U draw a picture?
If U say verbally, then U r using the left hemisphere of the brain, which treats stimuli serially, one at a time.
If U drew a picture or waved your arms around in the air, U r using the right hemisphere which
processes stimuli many at a time as a whole. This process is said to be easier and more predominant among left handers.