The Dutch Handedness Questionnaire

Handedness questionnaires typically include an item on preference for writing. However, because writing is influenced by cultural factors, this item was not included in the present 16-item Dutch-language questionnaire. The questionnaire was completed by 456 subjects. The item consistency of the 16 preference items was very high. Principal component analysis on the 16 items revealed one single handedness dimension. Preference for hammering showed the highest item-test correlation. The final version of the handedness inventory contains the ten items with the highest factor loadings.