 Bohmian mechanics yields a natural association between experiments and so-called generalized observables, given by positive-operator-valued measures (Davies 1976), or POVMs, \(O(dz)\), on the value spaces for the results of the experiments (Berndl, Daumer, et al. 1995). This association is such that the probability distribution of the result \(Z\) of an experiment, when performed upon a system with wave function \(\psi\), is given by \(\langle \psi | O(dz)\psi \rangle\) (where \(\langle | \rangle\) is the usual  inner product  between quantum state vectors).