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primary colors

the basic colors from which all the various hues can be produced by mixing different combinations. Some investigators believe human color perception involves combinations of the three primary colors (i.e., blue, green, and red); others contend that yellow, violet, or both should be included because of visual color sensitivity peaks found at those wavelengths.

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Psychology term of the day

March 17th 2025

micturition reflex

micturition reflex

reflex contraction of the bladder in response to signals from its stretch receptors. During development, a child learns to suppress the micturition reflex and to control urination. Also called bladder reflex.