from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The mental process of knowing, including aspects such as awareness, perception, reasoning, and judgment.
  • n. That which comes to be known, as through perception, reasoning, or intuition; knowledge.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The process of knowing.
  • n. A result of a cognitive process.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of knowing; knowledge; perception.
  • n. That which is known.

from The Century Dictionary and Cyclopedia

  • n. Knowledge, or certain knowledge, as from personal view or experience; perception; cognizance.
  • n. A mental act or process, or the product of an act, of the general nature of knowing or learning.
  • n. The formation of a concept, judgment, or argument, or that which is formed; the acquisition of knowledge by thinking, or the knowledge itself.
  • n. A mental representation (the act or the product) which, by the operation of sensory perception or thought, is made to correspond to an external object, though not, it may be, accurately. The word cognitio was the ordinary scholastic term in this sense. Cognition was occasionally used by Hobbes, Cudworth, and other writers whose vocabulary was strongly influenced by the Latin, but is rarely met with in later English before Hamilton.
  • n. In old Scots law, a process in the Court of Session by which cases concerning disputed marches were determined.
  • n. Same as cognizance, 2.
  • n. Cognition by direct insight, and not by ratiocination.
  • n. Present perception of an object, with consciousness of it as an object.
  • n. Knowledge more or less readily capable of practical application: opposed to speculative or metaphysical cognition, which is either incapable or not readily capable of such application.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the psychological result of perception and learning and reasoning


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English cognicioun, from Latin cognitiō, cognitiōn-, from cognitus, past participle of cognōscere, to learn : co-, intensive pref.; see co- + gnōscere, to know; see gnō- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English cognicion, from Latin cognitio ("knowledge, perception, a judicial examination, trial"), from cognitus, past participle of cognoscere ("to know"), from co- ("together") + *gnoscere, older form of noscere ("to know"); see know, and compare cognize, cognizance, cognizor, cognosce, connoisseur.


  • This is consistent with Wikipedia's definition: "The term cognition Latin: cognoscere, "to know", "to conceptualize" or "to recognize" refers to a faculty for the processing of information, applying knowledge, and changing preferences."

    James A. Shapiro: Living Cells, Complex Systems and the Economy

  • It should, however, be noted that there are similar difficulties in defining the term cognition Holyoak and Gordon 1984, p. 62, and, of course, rationality.


  • If there were any categories where blacks did better as a group, I think it would come down to comparability (i. e that cognition is not directly comparable because of different statistical strengths and weaknesses).

    The Volokh Conspiracy » But Isn’t It a Bit Hard to Predict With a 7-Year-Old?

  • Behavior Therapy – encourage persons to behave differently can cause new changes in cognition

    inkblurt · Why We Just Don’t Get It

  • Bounded cognition is a huge problem for EMH — most people cannot actually grasp what is going on.

    The Volokh Conspiracy » Greenspan’s ‘The Crisis’ and Modigliani and Miller

  • The Alzheimer's Association and the Centers for Disease Control and Prevention say all adults can take steps to improve or maintain cognition:

    Alzheimer's: What you need to know

  • Does everyone in ID think all this research into cognition is useless, a waste of money?

    Bunny and a Book

  • Besides being nice to look at (and a neat demonstration of fluid mechanics), this phenomenon also might throw some light on dolphin cognition, since the skill to create the rings is a bit subtle and tends to be taught from one dolphin to the next via careful observation and practice.

    Dolphins Finally Invent The Wheel

  • From the net-gang hobos (and their remarkable, cellular-automata driven fleamarkets) to the weird economic boom in cognition research, to the idea of leisure unions and anti-work activist techno-triumphalists, this book fizzes with awesome ideas.

    Boing Boing

  • Extremely low birth weight young adults reported more functional limitations in cognition, sensation, mobility, and self-care, compared with control subjects.



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