I address two issues that were inspired by my work on the Dutch Committee on Tests and Testing (COTAN). The first issue is the understanding of problems test constructors and researchers using tests have of psychometric knowledge. I argue that this understanding is important for a field, like psychometrics, for which the dissemination of…

The belief that randomized controlled trials provide a "gold standard" for evaluating therapeutic interventions is challenged. The need for research designs that produce valid and reliable information about interventions, which is clinically/educationally relevant and personally important, is discussed together with possibilities for broadening…