The relationship between the auditor and the audited is limited to either financial; such as the payment of audit fees, or personal interactions; such as and the provision of non-audit services. The American institute of certified public accountants' (AICPA) Special Committee on Assurance Services has identified several new assurance services such as risk assessment, business performance management, information systems reliability, electronic commerce, and health care performance measurement. These services aim to increase the efficiency and effectiveness of the audit, as it provides a wider awareness with the client’s systems and strategies, hence offer firms substantial revenue opportunities (Elliott & Pallais, 1997; Telborg, 1996). Auditor’s main concern is to question the reasonableness of financial statement assertions made by the client, maintaining judicial impartiality (AICPA, 1992). This can be highly affected by integrity and independence; which in turn is affected by many factors such as the audit lengthy tenure, which may decrease the intensity of scrutiny and the readiness to apply professional scepticism (Mautz, 1961), and the far that the relationship can get before a mutuality of interests is created (Sutton, 1993).