Examlex
An astronomer studying a cluster of galaxies finds a galaxy that is round and has a disk and central bulge like a spiral galaxy but has no spiral arms. How should the astronomer classify this galaxy?
Weber Fraction
A psychological principle that quantifies the perception of change in a given stimulus proportionate to the original intensity of the stimulus.
Just-Noticeable Difference
The smallest difference in stimulus intensity that a specific sense can detect.
Decision Criterion
The threshold or standard set by an individual or system to decide between alternatives.
Weber's Law
A principle in psychology that states the smallest change in a stimulus that can be detected is a constant proportion of the original stimulus's intensity.
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