Midline crossing: Developmental trend from 3 to 10 years of age in a preferential card-reaching task

摘要: We assessed 110 left-handed and 322 right-handed children aged from 3 to 10 years, using Bishop’s card-reaching task. Manual body midline crossings were observed. A regular developmental trend was observed years: older crossed the more frequently when reaching for cards than did younger children. The factor age explained 4.9% of variance. Significant differences appeared between 3–4 years old 8–10 effect spatial position also significant: contralateral hand used less often reach at most extreme positions. These findings in this task demonstrate that development degree handedness follows a long trend.