Hereditary determinants of manual torque.
Data from a longitudinal study of twin children and siblings, 155 girls and 134 boys (aged 4 to 9 yr.), on a torque test confirmed that during this age period manually produced circling patterns change from clockwise to counterclockwise orientation. A genetic influence is suggested.
D000375:Aging; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005260:Female; D007839:Functional Laterality; D005824:Genetics, Behavioral; D006801:Humans; D008297:Male; D009048:Motor Skills; D009949:Orientation; D011247:Pregnancy; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic