all the mental activities associated with thinking, knowing, remembering, and communicating.
a mental image or best example of a category. Matching new items to a prototype provides a quick and easy method for sorting items into categories (as when comparing feathered creatures to a prototypical bird, such as a robin).
a methodical, logical rule or procedure that guarantees solving a particular problem. Contrasts with the usually speedier—but also more error-prone—use of heuristics.
a simple thinking strategy that often allows us to make judgments and solve problems efficiently; usually speedier but also more error-prone than algorithms.
a sudden and often novel realization of the solution to a problem; it contrasts with strategy-based solutions.
a tendency to search for information that supports our preconceptions and to ignore or distort contradictory evidence.
(1) the inability to see a problem from a new perspective, by employing a different mental set. (2) according to Freud, a lingering focus of pleasure-seeking energies at an earlier psychosexual stage, in which conflicts were unresolved.
a tendency to approach a problem in one particular way, often a way that has been successful in the past.
the tendency to think of things only in terms of their usual uses or purposes; an impediment to problem solving.
judging the likelihood of things in terms of how well they seem to match particular prototypes; may lead us to ignore other relevant information.
estimating the likelihood of events based on their presence in our memory; if instances come readily to mind (perhaps because of their vividness), we presume such events are common.
the tendency to be more certain than correct—to overestimate the accuracy of our beliefs and judgments.
clinging to one's initial conceptions after the basis on which they were formed has been discredited.
an effortless, immediate, automatic feeling or thought, as contrasted with explicit, conscious reasoning.
the way an issue is posed; how an issue is presented can significantly affect decisions and judgments.
in a language, the smallest unit that carries meaning; may be a word or a part of a word (such as a prefix).
the set of rules by which we derive meaning from morphemes, words, and sentences in a given language; also, the study of meaning.
beginning at about 4 months, the stage of speech development in which the infant spontaneously utters various sounds at first unrelated to the household language.
the stage in speech development, from about age 1 to 2, during which a child speaks mostly in single words.
beginning about age 2, the stage in speech development during which a child speaks mostly statements made up of only a couple of words.
early speech stage in which a child speaks using mostly nouns and verbs such as "go car".