Abstract:
:We used an infra-red device to study the effects of gender and handwriting preference on manual asymmetry in tapping rate and intertap variability. Our sample (n=102) consisted of approximately equal number of subjects with respect to gender (52 women and 50 men) and handedness (52 right-handers and 50 left-handers). Data on overall performance indicated that men performed more quickly and regularly than women. The index used for measuring manual asymmetry was the difference between the hands as a proportion of the total. Therefore, the asymmetry index was adjusted to remove the influence of overall performance. The analyses based on asymmetry scores indicated a significant handedness effect: right-handers showed greater manual asymmetries than left-handers for both tapping rate and intertap variability. In addition, right handers exhibited a significant greater asymmetry for intertap variability than tapping rate. Taken together, these data may reflect greater hemispheric differences in right-handers, specially for intertap variability.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Schmidt SL,Oliveira RM,Krahe TE,Filgueiras CCdoi
10.1016/s0028-3932(99)00120-7subject
Has Abstractpub_date
2000-01-01 00:00:00pages
529-34issue
5eissn
0028-3932issn
1873-3514pii
S0028-3932(99)00120-7journal_volume
38pub_type
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