Bachelor Thesis from the year 2016 in the subject English - Literature, Works, University of Presov (British and American Studies), language: English, abstract: This bachelor thesis analyses Oskar Schell, the fictional character from Jonathan Safran Foer's novel "Extremely Loud and Incredibly Close." The chosen technique is called "a case study" since it examines the case of Oskar Schell with an emphasis on his mental state. The thesis is divided into two main parts; theoretical and practical. The theory briefly deals with the author and his literary purpose, explains the plot, the basic theories of three mental disorders - posttraumatic stress disorder, autism and clinical depression. The practical part demonstrates symptoms of these illnesses in Oskar's passages and in the end provides a possible diagnosis.