This empirical study investigates the impact of customer partnering in new
product development by comparing the performance of new products undertaken
in partnerships versus those developed in-house. The results demonstrate t
hat overall, partnership projects were no more successful than in-house pro
jects. This surprising result was true regardless of the performance metric
used. Not all new product development is improved by close cooperation wit
h customers. (C) 1999 Elsevier Science Inc. All rights reserved.