The situation where performance gains in a task are seen in weaker individuals who are striving to keep up with the accomplishments of other group members.

(psychology) A cognitive bias in which judgment of somebody's character is influenced by an overall impression of him or her.

(chemistry, physics) The effect that differing masses of different isotopes of the same element have on the physical and chemical properties of that element

A deleterious placebo effect.

The tendency for the peak luminance sensitivity of the human eye to shift toward the blue end of the spectrum at low illumination levels.

A temporal perceptual illusion that can arise when observers judge the elapsed time between sensory stimuli applied sequentially at different locations. Subjects tend to overestimate the time between stimuli when the distance between the stimuli is large, and to underestimate the time when the distance is small.

A spatial perceptual illusion that arises when observers judge the distance between consecutive stimuli in a sequence. When the distance between stimuli is constant but the time between stimuli is not, subjects tend to misperceive the shorter temporal interval as being accompanied by a shorter spatial interval.

simple past tense and past participle of side-effect

The phenomenon of air buoyancy leading to the movement of air into and out of buildings, chimneys, etc., which may drive natural ventilation, air infiltration, and fires.

Synonym of stack effect