AbstractThe work described in the paper is aimed at a better understanding of decision processes in ‘directed’ R&D. Specifically it focusses on the questions: What aspects of innovation does top management influence significantly?, and What are the effects of this influence? The kinds of influences looked at include technological, financial. marketing, timeliness and personnel factors as well as company characteristics. The overall hypothesis was that top management would be interested not only in ultimate objectives but also in intermediate objectives of shorter timespan.The research material consisted of answers to a 29‐item questionnaire given by 107 management‐level respondents in 13 sites. The questionnaires related to data on 154 projects including the degree of success data achieved. The results were analyzed to bring out main‐effect factors on success and intercorrelations between factors.Overall the results supported the initial hypothesis that top management is concerned with shorter‐term R&D matters as well as with the effects of R&D on long‐term strategy. The influence appears to be more marked during early some stages the of factors projects than later. Interestingly of correlated with economic success are not correlated with top management support, although support is correlated directly with succes. On the whole, top management intervention appears to be operational rather than primarily strategic.The authors interpret observations as meaning that top management intervenes at irreversible decision points and on matters that affect other functions of the company but keeps out of some important issues that are beyond