The published thesis submitted by Dr van Gijn and the cited article by E. Wayne Massey and Lynda Sanders were compared by two senior members of the editorial board and me. We concluded that four major passages with the exception of an occasional word change were identical. The passages were related to the neurophysiology of the extensor plantar response. Dr van Gijn's contribution was not referenced. Dr Massey explained that he had the thesis material without the author being identified. We conclude that this is an example of plagiarism.
Retraction
To the Editor.
—In the course of a recent reanalysis of the clinical data base of the Stanford (Calif) Mental Health Clinical Research Center, errors were encountered in the descriptions of certain research subjects (admitted to the Clinical Research Center between 1975 and 1980) and procedures that appeared in several published reports from the Center. One of these manuscripts, entitled