Re: Steven's Power Law

[Hugh J. Foley]

>Hey Scholars!
>
>I am working on a class demo using a magnitude estimation task.
>I (mis)remember that there was an exponent for judgments of the
>size/area of a circle.
>
>Does anyone know the value or remember whether such a value was
>determined?
>
>Ken

Well, judgments of area seem to be affected by the nature of the stimulus (as well as the host of methodological factors that can affect judgment). For squares, the exponent may be around .75. For circles, the exponent may be around 1.0 (for the range used by Ekman, and using a standard circle, assigned a value of 1.0).

Hugh

Anastasi, A. (1936). The estimation of areas. Journal of General Psychology, 14, 201-225.
Ekman, G., & Junge, K. (1961). Psychophysical relations in visual perception of length, area, and volume. The Scandinavian Journal of Psychology, 2, 1-10.
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Hugh Foley | |
Department of Psychology | |
Skidmore College | bd ii |
Saratoga Springs, NY 12866 | |
(518) 580-5308 | |
[EMAIL PROTECTED] | |
http://www.skidmore.edu/~hfoley | |
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