Fig. 1.

Beery VMI: a shows the distribution of Beery VMI scores in 70 NF1 children and 19 age-matched controls; b shows examples of Beery VMI performance of two NF1 children and of two age-matched control children with around average Beery VMI score for their respective groups. Items illustrating pure motor problems in these two NF children were selected. Performance on item 2 is shown for a male NF1 child (age, 14.6 years; score, 79) and a male control (age, 14.3 years; score, 97). The NF1 child drew an unsteady line, had a weak pencil stroke, and there was an indication of a very discrete tremor. Item 16 is shown for a male NF1 child (age, 10.9 years; score, 84) and a female control (age, 10.5 years; score, 103). The NF1 child shows a general delay in fine motor development and performs around developmental age 5.4 years on this item [7]. Note the slip of the pencil at the end of the movement