A dual Methodology for Case Studies: Synergistic Use of a Longitudinal Single Site with Replication Multiple Sites

Leonard-Barton, Dorothy (1990) Organizational Science, 1(3), 248-266. Description: Describes a case study methodology that combines real-time longitudinal with nine retrospective case studies on same phenomenon. Discusses complementary and synergistic nature of data and analysis strategy. Argues that the combination of these types enhances construct, internal and external validity and discusses appropriate application of the approach.