Interdisciplinary concentrations are organized programs a student may choose to complete in addition to a major. Concentrations are offered in American Studies; East Asian Studies; Environmental Studies; Global Development Studies; Latin American Studies; Linguistics; Neuroscience; Policy Studies; Russian, Central, and Eastern European Studies; Technology Studies; and Western European Studies. Each concentration includes work in several departments and culminates in an interdisciplinary seminar or research project in the senior year. Completion of a concentration is entered on a student's permanent record and transcript. Students declare their intention to pursue a concentration by registration for their seventh semester. A course in the student's interdisciplinary concentration cannot be elected for grading on the "S/D/F" basis. Any course elected for such grading before the student's declaration of a major or interdisciplinary concentration does not count toward the minimum credit requirement for the major or concentration.