A follow-up dual-task investigation of lateralized effects in right- and left-handed males.
A dual-task follow-up investigation examined the influence of sample size and ideational complexity of cognitive tasks on lateralized effects. With a larger sample (n = 128), results showed a "manual dominance effect" for relaxed and paced nonideational vocalized tasks. A hierarchy of ideational verbal tasks yielded the expected lateralized effects which corresponded with increasingly greater interference in concurrent tapping, but not in strength of laterlized effect. Instead of a trend seen in the earlier work (Steiner, Green, & White, 1992), results revealed a significant difference between handedness groups for one complex spatial task. Finally, outcomes for the other spatial task highlight the importance of assessing tradeoffs in attention.
Green
A
A
Youngstown State University.
Steiner
R
R
White
N
N
D000328:Adult; D001288:Attention / Q000502:physiology; D003071:Cognition / Q000502:physiology; D005500:Follow-Up Studies; D007839:Functional Laterality / Q000235:genetics / Q000502:physiology*; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D014705:Verbal Behavior / Q000502:physiology