Girls are said to outperform boys in the human figure drawing, but some disagreement exists among studies regarding such sex differences, and the reasons for these sex differences are unclear. The study examined how sex, age, and graphic fluency affect scores at the human figure drawing in large sample of children aged five to 12 years. To that end, the Draw-a-Person Test was administered to 336 boys and girls from kindergarten to Grade 6, using Goodenough's scoring method. Graphic fluency was measured using Torrance's Parallel Lines Test. Results showed a sex by age interaction on scores at the Draw-a-Person test, with girls outperforming boys at Grades 3 and 6. Split-sample regression analyses indicated that for boys both age and graphic fluency were relevant predictors for scores on the Draw-a-Person test; by contrast, for girls age, but not fluency, predicted the drawing scores. It was concluded that graphic fluency differently affected boys' and girls' scores.