A hierarchy of requirements applying to practising psychologists is the basis of a concept for oral examinations in psychological assessment. A study on the objectivity of oral examinations was replicated. We found very high correlations between the evaluations of examiner and assessor and high correlations between the examinees’ self-evaluations after the exam. Examinees’ self-evaluations before the examinations correlated at about 0.48 with the marks in the oral examina-tion. The results concerning preparation do not uniformly show that preparation in a group and mutual examination lead to better marks compared to preparation alone