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This article provides a new definition for case study research. Achieving deep understanding of processes and other concept variables (e.g. actors' perceptions of their own thinking processes, intentions and contextual influences) is identified as the principal objective of case study research. Using multiple methods to``triangulate'' (i.e. confirm and deepen understanding by using multiple sources all focusing on the same process/event) within the same case is described. The article outlines the core criticisms made by case study researchers of large sample surveys. A need exists for a paradigm shift in research on organizational behavior (including modeling the antecedents of new product performance). The article outlines the telling weaknesses of case study research as seen by other researchers. The article examines Senge's core propositions related to the``mental models'' of decision participants. Details illustrate the use of specific research methods for case studies to achieve different research objectives and the combination of objectives. Finally, the article illustrates basic concept variables in a case study and 12 propositions are reviewed briefly. This report reviews classic and recent contributions in the literature on case study research.Defining case study research (CSR): achieving a broad perspective CSR is inquiry focusing on describing, understanding, predicting, and/or controlling the individual (i.e. process, animal, person, household, organization, group, industry, culture, or nationality). This definition is broader intentionally than the definition Yin (1994, p. 13) proposes:A case study is an empirical inquiry that investigates a contemporary phenomenon within its real-life context, especially when the boundaries between phenomenon and context are not clearly evident.

Purchasing professionals and researchers alike acknowledge the fact that the changing atmosphere in buyer‐supplier relationships is due largely to the globalization of the marketplace. Partnering strategies, which necessitate closer ties between buyers and suppliers, are becoming increasingly common for U.S. firms. Such strategies, in turn, allow buyers and suppliers in the United States to compete more effectively with international firms abroad. How has this changing business climate affected buyers’ choice decisions in supplier selection? That question is the focus of this study. The relative importance of supplier selection criteria is examined longitudinally by reviewing the findings of studies published during the past two decades. Those results are then compared with the findings of this study to gain insight about the relative importances of decision criteria used by purchasing professionals in selecting suppliers.

The use of a website and pedometer was feasible and safe, and persons increased their daily walking.