Effect of Age on Handedness in Brazilian Adults is Sex-Dependent

Abstract

The hand preference of 357 men (20 to 69 yr.) and 332 women (20 to 68 yr.) was assessed by the Edinburgh Handedness Inventory. Analysis showed that (i) 20- to 29-yr.-old men have a higher frequency of left-and mixed-handedness and a lower frequency of right-handedness than women; (ii) 40+-yr.-old men have a lower frequency of mixed-handedness and a higher frequency of right-handedness; (iii) the manual preference of women was not related to age.