Courses numbered in the 20's are open enrollment (though sometimes limited by available seating), courses designed to provide broad coverage of a particular area of Psychology. Complete descriptions of these courses are available in the ORC. These courses usually have PSYC 1 or 6 as a prerequisite, but in some cases, alternate prerequisites are possible. Courses numbered in the 20s are a part of both the Psychology and Neuroscience majors. Consult the relevant major requirements for details. Most of the 20-level courses are taught in a lecture format. Enrollments in such courses over the past few years have ranged from 60-150. In general these courses use the Registrar's priority system as follows: Senior majors, junior majors, senior minors, junior minors, sophomores, other seniors, other juniors and first-year students. As much as is possible, 20 level courses are offered every year, and in the same term each year.