In your applicant statement, discuss your past education and experience, academic and professional plans, and reasons for wishing to undertake graduate work. Include some details about intended specialization in your field, your preparation for that specialization, and anything else you consider important for an assessment of your abilities (including articles, theses, books, any other material published, any invention patented; academic honors, prizes, honorary scholarships; reasons for transferring from one institution to another; etc.) It is very important that you check the program homepage to see if there are additional program specific prompts that you should respond to in the applicant statement.