Lavigne, J. Albert C2012-03-132012-03-1319811981Source: Dissertation Abstracts International, Volume: 72-06, Section: A, page: .http://hdl.handle.net/10393/21155http://dx.doi.org/10.20381/ruor-8826Abstract not available.123 p.Education, Instructional Design.An empirical investigation of the effects on learning and retention of a multiple channel presentation of an advance organizerThesis