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Discontinuity in the fall of left-handedness in a French population: a May '68 effect?
François X Coudé1, Claire Mignot, Stanislas Lyonnet
1Hôpital Necker, Paris, France. fxcoude@tiscali.fr
Abstract:
The fall in the prevalence of left-handedness with age has been attributed to the effect of forced dextrality on handwriting. The purpose of this study was to assess handwriting preference in a cohort of children and adult participants in order to study the correlation between age and incidence of sinistrality. A strong preference for right handwriting across all ages with a decrease in sinistrality with age (18% in those under 20 versus 3% in those over 60) was observed. This phenomenon was not continuous, and a dramatic drop at age 30-40 years might be attributed to changes in educational management during the 1960s, especially after the events of May 1968 in France.
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