Psychologische Mess- und Testverfahren

The use of psychological assessment methods is flawed by incorrect assumptions of their capacity. Some of these assumptions are discussed. It is argued that psychological tests are necessary to expand the database for expert reports about the impact of mental disorders on work and different levels of functioning. Tests help to protect psychological assessments against errors and chance bias. With respect to levels of functioning, examples of German tests and questionnaires are given. Test-based information requires objective validation methods and should not be subordinated to an intuitive assessment strategy.