What sort of measurement is psychophysical measurement?

What sort of measurement is psychophysical measurement?

THE thesis of this article has both a negative and a positive aspect. The negative one holds that psychophysical measurement is not of a character closely analogous to either fundamental or derived physical measurement. Whatever loudness may be, I endeavor to establish that it probably is not a measure much like mass or energy or density. In brief, the reason is that psychophysical measures do ...

[Vision measurement and psychophysical tests].

Vision measurement is the basis for the study and standardization of visual sciences. Measurement of visual acuity has great value for research and for clinical practice. This paper (1) reviews the fundamental concepts to understand visual sense and the measuring units; (2) presents the fundamental limits to visual performance and the principles of aberration measurement of the eye; and (3) dis...

Efficiency measurement of health care organizations: What models are used?

Background: Literature abounds with various techniques for efficiency measurement of health care organizations (HCOs), which should be used cautiously and appropriately. The present study aimed at discovering the rules regulating the interplay among the number of inputs, outputs, and decision- making units (DMUs) and identifying all methods used for the measurement of Iranian HCOs and criticall...

Psychophysical measurement of marmoset acuity and myopia.

The common marmoset has attracted increasing interest as a model for visual neuroscience. A measurement of fundamental importance to ensure the validity of visual studies is spatial acuity. The marmoset has excellent acuity that has been reported at the fovea to be nearly half that of the human (Ordy and Samorajski []: Vision Res 8:1205-1225), a value that is consistent with them having similar...

Psychophysical Measurement of Odor Perception in Humans