acuity grating

a stimulus used to measure an individual’s sharpness of visual perception. It consists of alternating black and white lines spaced closely together; the point at which the participant perceives the lines to be homogeneous gives an indication of visual acuity. When the contrast of the lines is varied, the acuity grating can be used to test contrast sensitivity.

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Psychology term of the day

February 24th 2025

one-way design

an experimental design in which a single independent variable is manipulated to observe its influence on a dependent variable. For example, a researcher could use a one-way design to examine the effect of different amounts of daily exercise (e.g., 0 minutes, 30 minutes, 60 minutes) on mood. Also called single-factor design.