Stimuli in experiments in which line-lengths are judged are typically single lines. In studies in which area and volume are judged, the stimuli are typically more complex. An experiment with 22 college undergraduates investigated whether differences in context (single lines versus lines in depicted boxes) influenced the exponent or scaling factor of the power function of length judgments. The scaling factor of the power function was significantly affected by context, but the exponent of the power function was not.
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References
1.
BairdJ. C.Psychophysical analysis of visual space. Oxford: Pergamon, 1970.
2.
BairdJ. C.NomaE.Fundamentals of scaling and psychophysics. New York: Wiley, 1978.
3.
FisherG. H.An experimental and theoretical appraisal of the inappropriate size-depth theories of illusions. British Journal of Psychology, 1968, 59, 373–383.
4.
FraymanB. J.DawsonW. E.The effect of object shape and mode of presentation on judgments of apparent volume. Perception and Psychophysics, 1981, 29, 56–62.
