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, 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)
the set of rules by which we derive meaning from morphemes, words, and sentences in a given language; also, the study of meaning
at about 4 months, the stage of speech development in which the infant spontaneously utters various sounds at first unrelated to the household language.
one word stage
the stage in speech development from about age 1 to 2 during which a child speaks mostly in single words.
two word stage
beginning about age 2 the stage in speech development during which a child speaks mostly two word statements
early speech stage in which a child speaks like a telegram—"go car"—using mostly nouns and verbs and omitting auxiliary words.