The isolated execution seen in drawing circle seems to already by mature at an age of years. This contrasts with the findings of Blank et al. who evidenced an increase in frequency until adulthood by analyzing distal and proximal drawing movements. The disparity of age distribution between this study and ours makes a direct comparison inadequate; the oldest participants in the pediatric age group were 14 years old and they youngest adult studied was 27 years of age. Another study investigating the developmental differences in drawing performance of children aged 4-12 years also documented a continuous development of drawing movements throughout the age range of the sample