A white matter enhancing device, method, and program enabling analysis of the growth of the brain of an organism, the degree of development thereof, the superiority of the left or right brain, discrimination of strong and weak areas, and the brain characteristics of the organism such as personality of the organism. The white matter enhancing device (A) comprises a storage section (5) which receives a contrast image of the brain of an organism captured by an MRI apparatus (B) and stores it, a white matter enhanced image creating section (6) for creating a white matter enhanced image in which the white matter is enhanced by adjusting the contrast of the stored contrast image so that the white matter may be conspicuous and the cortex may be inconspicuous, a display processing section (7) forallowing an output section (2) to display the created white matter enhanced image, and an arborization pattern analyzing section (8) for analyzing the brain characteristics of the organism by using one of the number, thicknesses, lengths, positions, densities, shapes, and sizes of the branches shown in the white matter enhanced image or a combination of them.