Within-modal and cross-modal reliabilities of two laterality tests among left handers.

20 left handers were administered four repeat testing of a dichotic listening task and a verbal visual half-field task. Scores on the dichotic task were reliable between Days 1 and 4 while visual half-field performance did not stabilize until two testing sessions. Left handers showed a clear right channel, superiority of the right visual half field for the verbal material. No significant cross-model reliabilities were observed. It was also found that, in comparison to right handers, left handers show more variability in channel/visual half field than right handers on the same procedures.