| Term | Definition |
| interlanguage hypothesis | refers to the separateness of a second language learner's system, that has a structurally intermediate status between the native and target language |
| overgeneralization | the process of regularizing exception forms, as in "swimmed" and "taked" |
| babbling stage | from age six months to about one year,, the child imitates the sounds of human languages |
| holophrastic stage | one word is equivalent to one sentence |
| cognitivist | knowledge is viewed as symbolic mental constructions in the minds of individuals, and learning becomes the process of committing these symbolic representations to memory where they may be processed |
| social interactionist | the learner discovers the meaning potential of language by participating in communication |
| social-cultural model | students from a non-mainstream culture are acquiring a second culture/language which may contrast between the patterns acquired at home |
| CALLA | this approach incorporates explicit teaching of learning strategies for purposes of academic communication in content areas |
| interactionist | one of the most salient and significant modes of discourse is conversation |
| universal hypothesis | much linguistic knowledge is universal across languages |
| two-word stage | a child of approximately two years of age begins to produce utterances such as "car go" |
| constructivist | it is based on the premise that we all construct our own perspective of the world, based on individual experience and schema, focuses on preparing the learner to problem solve |
| acquisitionist model | children acquire language, constructing their own understanding or rules without receiving explicit instructions |
| telegraphic stage | a stage of stringing more than two words together...utterances sound like a western union message |
| metacognition | cognitive operations of being aware learning, using, and self-monitoring of learning strategies |
| BICS | Basic Interpersonal Communication Skills |
| CALP | Congnitive Academic Language Proficiency |
| CUP | Common Underlying Proficiency |
| SUP | Separate Underlying Proficiency |