The correct answer, "A Study in Literary Judgement," is indeed the subtitle of I.A. Richards' book Practical Criticism (1929).
This book was significant because Richards explored the ways readers interpret texts, especially poetry, and he introduced methods for analyzing literature without relying on prior knowledge of the author or context. His work was foundational in the development of New Criticism, a movement focused on close reading and objective analysis of texts, and Practical Criticism sought to address how readers make judgments about literary quality.