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Absent Grief a form of complicated grief in which a person shows no, or only a few, signs of distress about the death of …

Absent-Mindedness n. a state of apparent inattention marked by a tendency to be preoccupied with one’s own thoughts and not with external conditions. …

Absolute adj.1. not limited or subject to restriction, as in absolute power. 2. not conditional on or relative to anything else, as in absolutism. See also cultural …

Absolute Error the degree to which an observation is inaccurate without specification of whether it errs by being too high or too …

Absolute Impression a psychophysical judgment based on implied or vague standards, such as It was a bright day.

Ability–Achievement Discrepancy the difference between an individual’s known aptitude for a subject area or concept and his or her performance in that …

Abiotrophy n. loss of function or loss of resistance to a disease through degeneration or failure of body tissues, organs, or systems. Abiotrophy …

Ablation n. the removal or destruction of part of a biological tissue or structure by a surgical procedure (e.g., mechanical or laser excision) …

Ablution n.1. a largely obsolete therapeutic technique utilizing water to calm agitated patients, such as by wrapping them in wet towels or immersing …

Abney’s Effect a perceptual phenomenon in which the addition of white light leads to a shift in the hue of monochromatic color. …