A committee at Tilburg University (in the Netherlands) has determined that the social psychologist Diederik Stapel is guilty of fabricating data in multiple studies. Staepl has admitted his guilt, saying he "failed as a scientist". From sciencemag.org:
The panel reported that [Stapel] would discuss in detail experimental designs, including drafting questionnaires, and would then claim to conduct the experiments at high schools and universities with which he had special arrangements. The experiments, however, never took place, the universities concluded. Stapel made up the data sets, which he then gave the student or collaborator for analysis, investigators allege.
An odd touch of irony: Some of Stapel's earlier work included investigating how psychologists would react to a plagiarism scandal.