"She, This in Blak" takes a fresh look at Chaucer's great Trojan romance, Troilus and Criseyde, in light of recent scholarship on late scholastic discourses on representation and causality as they pertain to human perception and judgment. This study also contributes to a growing literature on the impact of scholastic psychological theory upon contemporary cultural forms by examining the way in which late medieval accounts of perception and cognition can illuminate the construction of the poem's subjects, including one of the most compelling and controversial figures in medieval literature, Chaucer's Criseyde. By examining Chaucer's depiction of Troilus, Pandarus, and Criseyde within this contemporary cultural context, "She, This in Blak" offers a better grounded and more historically illuminating view of the poem than is provided by psychological readings based on modern constructions of intentionality.