ARTHUR ANDERSEN LLP CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this Post-Effective Amendment No. 1 to Form S-4 Registration Statement on Form S-3 of our report dated February 2, 1996, included in IBAH, Inc.'s Form 10-K for the year ended December 31, 1995, and to all references to our Firm included in this Post-Effective Amendment No. 1 to Form S-4 Registration Statement on Form S-3. ARTHUR ANDERSEN LLP Philadelphia, Pa., December 6, 1996