all the mental activities associated with thinking, knowing, remembering, and communicating.
a mental image or best example of a category. Matching new items to the prototype provides a quick and easy method for including items in a category (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 approach a problem in a particular way, often a way that has been successful in the past.
the tendency to think of things only in terms of their usual functions; an impediment to problem solving.
judging the likelihood of things in terms of how well they seem to represent, or match, particular prototypes; may lead one to ignore other relevant information.
estimating the likelihood of events based on their availability in memory; if instances come readily to mind (perhaps because of their vividness), we presume such events are common.
the tendency to be more confident than correct—to overestimate the accuracy of one's beliefs and judgments.
the way an issue is posed; how an issue is framed can significantly affect decisions and judgments.
the tendency for one's preexisting beliefs to distort logical reasoning, sometimes by making invalid conclusions seem valid, or valid conclusions seem invalid.
clinging to one's initial conceptions after the basis on which they were formed has been discredited.
in a language, the smallest unit that carries meaning; may be a word or a part of a word (such as a prefix).
at about 4 months, the stage of speech development in which the infant spontaneously utters various sounds at first unrelated to the household language.
early speech stage in which a child speaks like a telegram--"go car"--using mostly nouns and verbs and omitting auxiliary words.
the set of rules by which we derive meaning from morphemes, words, and sentences in a given language; also, the study of meaning.
the stage in speech development, from about age 1 to 2, during which a child speaks mostly in single words.