language
the agreed-upon systems of spoken, written, or signed words, and the ways people combine them to communicate meaning
two-word stage
the stage in speech development, beginning about age 2, during which a child speaks or signs mostly in two-word sentences
one-word stage
the stage in speech development, from about age 1 to 2 years, during which a child speaks or signs mostly in single words
aphasia
impairment of language, usually caused by left hemisphere damage either to Broca’s area (impairing speaking) or to Wernicke’s area (impairing understanding of speech)
linguistic relativism
the idea that language influences the way humans think
Broca’s area
a frontal lobe brain area, usually in the left hemisphere, that helps control language expression by directing the muscle movements involved in speech
universal grammar
humans’ innate predisposition to understand the principles and rules that govern grammar in all languages
phoneme
in a language, the smallest distinctive sound unit
grammar
in a language, a system of rules that enables communication and understanding between people
Semantics is the language’s set of rules for deriving meaning from sounds, and syntax is its set of rules for combining words into grammatically sensible sentences.
linguistic determinism
Whorf’s hypothesis that language determines the way humans think
telegraphic speech
the early speech stage in which a child speaks or signs like a telegram — “go car” — using mostly nouns and verbs
morpheme
in a language, the smallest unit that carries meaning; may be a word or a part of a word (such as a prefix or suffix)
wernicke’s area
a brain area, usually in the left temporal lobe, involved in language comprehension and expression
babbling stage
the stage in speech development, beginning around 4 months, during which an infant spontaneously utters various sounds (or makes signs) that are not all related to the household language
neutral stimulus (NS)
in classical conditioning, a stimulus that elicits no response before conditioning
conditioned response (CR)
in classical conditioning, a learned response to a previously neutral (but now conditioned) stimulus
behaviorism
the view that psychology should be an objective science that studies behavior without reference to mental processes
Most research psychologists today agree with the first premise but not with the second one.
discrimination
in classical conditioning, the learned ability to distinguish between a conditioned stimulus and other stimuli that have not been associated with a conditioned stimulus
conditioned stimulus (CS)
in classical conditioning, an originally neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response
learning
the process of acquiring new information and behavior through experience
associative learning
learning that certain events occur together
The events may be two stimuli (as in classical conditioning) or a response and its consequence (as in operant conditioning).
operant behavior
behavior that operates on the environment, producing a consequence
high-order condition
a procedure in which the conditioned stimulus in one conditioning experience is paired with a new neutral stimulus, creating a second (often weaker) conditioned stimulus
For example, an animal that has learned that a tone predicts food might then learn that a light predicts the tone and begin responding to the light alone. This is also called second-order conditioning.
habituation
decreasing responsiveness with repeated stimulation