ERIM REPORT SERIES RESEARCH IN MANAGEMENT ERIM Report Series reference number ERS-2001-50-MKT Publication September 2001 Number of pages 28 Email address corresponding author mleenders@fbk.eur.nl Address Erasmus Research Institute of Management (ERIM) Rotterdam School of Management / Faculteit Bedrijfskunde Erasmus Universiteit Rotterdam P.O. Box 1738 3000 DR Rotterdam, The Netherlands Phone: +31 10 408 1182 Fax: +31 10 408 9640 Email: info@erim.eur.nl Internet: www.erim.eur.nl Bibliographic data and classifications of all the ERIM reports are also available on the ERIM website: www.erim.eur.nl COMPETITIVENESS OF FAMILY BUSINESSES: DISTINGUISHING FAMILY ORIENTATION AND BUSINESS ORIENTATION MARK A.A.M. L EENDERS AND ERIC WAARTS