Beginning about age 2, the stage in speech developement during which a child speaks mostly two-word statements.
Cognition
The mental activities associated with thinking, knowing, remembering, and communicating
Mental Set
A tendency to approach a problem in a particular way, especially a way that has been successful in the past but may or may not be helpful in solving a new problem.
One-Word Stage
The stage in speech developement, from about age 1 to 2, during which a child speaks mostly in single words.
Skinner
Skinner argued that each act of speech is an inevitable consequence of the speaker's current environment and his behavioral and sensory history, and derided mentalistic terms such as "idea", "plan" and "concept" as unscientific and of no use in the study
Prototype
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).
Syntax
The rules for combining words into grammatically sensible sentences in a given language.
Algorithm
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.
Babbling Stage
Beginning at 3 to 4 months, the stage of speech developement in which the infant spontaneously utters various sounds at first unrelated to the household langauge.
Critical Period
"critical period" in developmental psychology and developmental biology is a time in the early stages of an organism's life during which it displays a heightened sensitivity to certain environmental stimuli, and develops in particular ways due to experie
