Abstract:
The purpose of this study aims to investigate the factors affecting internal audit effectiveness in public organizations. The two factors representative independent variables involved public organization factors and internal audit characteristics factors whereas dependent variable was internal audit effectiveness. The public organization factors consisted of management support, information system, and organizationalculture. Other independent variables, internal audit characteristics factors were internal auditor knowledge, internal auditor independent, the reliability of internal audit reporting, and acceptance of auditee. Besides, the four dimensions of internal audit effectiveness comprised corporate governance, responsibility report, efficiency and effectiveness of performance and warning. Data were collected by questionnaires sent to the 237 respondents including executive directors, directors and internal
auditors, working in the 29 public organizations. The 102 questionnaires replied by respondents were returned representative 31.88 percent. The descriptive statistics and multiple regression were used to analysis the data.
The results of the study found as follows;
1. Information system and the reliability of internal audit reporting affected to internal audit effectiveness in aspect of corporate governance,
2. Organization culture and the reliability of internal audit reporting affected to internal audit effectiveness in aspect of internal audit responsibilities reporting, IV
3. Information system, organization culture and the reliability of internal audit reporting affected to internal audit effectiveness in aspect of efficiency and effectiveness of performance,
4. Organizational culture and the reliability of internal audit reporting affected to internal audit effectiveness in forewarning.
The results pointed out that those two dimensions of public organization factors; organizational culture, information system, and the reliability of internal audit reporting significantly affected to internal audit effectiveness. Therefore, the results of this study demonstrated that the public organization factors led to achievement of internal audit.