“…A number of field studies have compared various self-directing or learnercentered methods with teacher-centered methods, and have yielded conflicting results (Briggs, 1947(Briggs, , 1949Pressey, 1949;Russell, 1953;McKeachie, 1954;Thompson & Tom, 1957;Hunnicutt & Iverson, 1958;Olson, 1959;Anderson, 1963). A study by Gruber and Weitman (1962) was probably the most comprehensive in that self-direction (by college students) was examined across many different subject matters and for many criteria, including long-term attitude changes.…”