Enriching the Layers of Necessity Model.

The Layers of Necessity Model developed by M. Tessmer and J. F. Wedman (1990 and following) proposes that designers create multiple layers of instructional design (ID) activities depending on the particularities of different design situations. To enrich tha understanding of the model, a replication was conducted of a study conducted in 1992. Subjects were 66 members of the National Society for Performance and Instruction (NSPI) (Canada). The questionnaire asked how often subjects performed particular activities in ID in a variety of contexts. Questions about the individual's introduction to ID and the references the subject found most useful were added. Responses indicate that there is a consensus among practitioners that the 11 listed tasks form the core of the ID process. While some respondents added tasks, others deleted some to emphasize different aspects of ID. Although there was great heterogeneity of introduction to ID, responses were surprisingly homogeneous. Differences between these responses and those of the previous study are analyzed. One table presents survey findings. (Contains 6 references.) (SLD) *********************************************************************** Reproductions supplied by EDRS are the best that can be made from the original document. *********************************************************************** U.S. DEPARTMENT°, EDUCATION OTI.ce ca Fclucattonat Research and Impmeemient EDU ATIONAL RESOURCES INFORMATION CENTER (ERIC) TO.5 document has been lPrOducad II reCcved from the person or organaahon origwattng it 0 Minor changes have been made to trnprovet reproduction Quality Po.nts ol view ot ocontons Cated tn tresdoCu went do not necessamy represent olliciat OEM posthon or poltCy Enriching the Layers of Necessity Model Laura R. Winer and Jesus A. Vazquez-Abad Universite de Montreal, Faculty of Education Martin Tessrner University of South Alabama, Department of Behavioral Studies and Educational Technology "PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY