their helpful criticisms of a preliminary draft of this chapter. A special word of thanks is due Dr. Stevens, u~ho, in addition to discovering seueral errors of fact and a nutnber of stylistic blunders, forced us to reconsider some of our views on various aspects of scaling. His comments coupled wzth our own misgivings resulted in a complete revision oj'the section on magnitude estimation and t...

OBJECTIVE Change in psychophysical capacity, calculated as the ratio between physical capacity and perceived effort, may be a determinant of change in perceived disability. The aim of this study was to identify determinants for change in perceived disability, as measured with the Roland Morris Disability Questionnaire (RMDQ), in patients with non-specific chronic low back pain after rehabilitat...

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When Fechner (1860/1966) introduced the new transdisciplinary research program of “Psychophysik”, his goal was to present a scientific method of studying the relations between body and mind, or, to put it more precisely, between the physical and phenomenal worlds. The key idea underlying Fechner’s psychophysics was that body and mind are just different reflections of the same reality. From an e...

THE approach to the subject of this lecture is dictated by two of the most important principles held by the Medical Faculty of this Universitv in the teaching of medicine. The first of these is that the student should acquire a sound knowledge of the laws governing health and disease, so that no matter what problem confronts him as a doctor, he will be able to marshal his facts in such a way th...