Abstract
As a key element in survival and sustaining growth, the constant development and re‐development of products has been the subject of many academic and consulting group studies. The specific focus of these studies has often been to identify and describe those factors which determine the outcome of new product developments; the critical success factors in NPD. In order to fulfill their objectives, the studies have focused on many aspects of the management of new product development programmes in companies, and attempted to relate them to a number of alternative outcomes. This has called for the measurement of “success” itself. Unfortunately, there is very little consensus amongst the studies regarding how best to operationalize “success”, and researchers have employed a variety of measures, focused on different levels of analysis, sought data from different sources and used different data collection methods. This paper examines the performance measures used in several major NPD studies and shows how success “measures” have been treated as financial and non‐financial. In addition, attention is drawn to the problems inherent in the different definitions of success. Finally, using data from an empirical survey, the relationship between financial and non‐financial outcomes is examined.

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