into categories for further examination. Discussions of each of these categories, together with the refined methodology, appear in three chapters: Chapter 4 details content analysis studies, Chapter 5 details comparative studies, and Chapter 6 details case and synthesis studies. These subgroup reports were subsequently reviewed and discussed by the entire committee and were revised to relate to each other and to the framework.

Our conclusions and recommendations are listed in Chapter 7.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement