metacontrast

n. a form of backward masking in which the perception of a visible stimulus (the target) is altered by the subsequent presentation of a second visual stimulus (the mask) in a different spatial location. The target is often a small dot, while the mask is a ring that surrounds it. Each stimulus is presented very briefly (10–100 ms), at intervals that are varied systematically, and the quality of the target’s percept is measured. Compare paracontrast.

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Psychology term of the day

November 24th 2024

R-technique factor analysis

a type of factor analysis performed on a correlation matrix: It examines associations between variable measurements in order to understand how the variables themselves group together and are related. Also called R factor analysis. Compare P-technique factor analysis; Q-technique factor analysis.