White Matter Tracts From Two Subjects With High or Low Trait Scores. (A) The first row shows connection types in subjects with a high (125.2) and low (67.27) reading score; streamlines for these subjects are shown in the rows below. The subject with a higher reading score exhibits richer and thicker structural connections compared to the subject with a lower reading score; this pattern is common for subjects with similarly high reading scores. (B) The first row shows connection types of a light alcohol drinker and a binge drinker; streamlines are shown in the rows below. There are subtle but identifiable changes between the white matter tracts of both subjects.