According to Noam Chomsky, who conceived it, the "system of principles, conditions, rules that are elements or properties of all human languages."
Universal grammar
Level 1 acquisition of phonemes
Native language
Critical period for language acquisition
7 months
When a child learns a foreign language at the same rate as a native language
3-7 years
Diminishing capacity for learning a foreign language
8-Puberty
Partial or total inability either to convey ideas in language or to understand language as a result of damage to the brain
Aphasia
Aphasia caused by damage to Broca's area (front) in which a speaker finds it impossible to form comprehensible sentences. Can still understand
Broca's aphasia
Aphasia caused by damage to Wernicke's area, because of which a speaker finds it difficult to understand speech. Can speak fluidly but it makes no sense
Wernicke's aphasia
Exchange of (usually) initial sounds in a series of two or more words. "Sew you to your sheet."
Spoonerism
Verbal slip in which a similar word is substituted for an intended one. "The pineapple of intelligence" (when "pinnacle" was the intended word.)
Malapropism
Verbal slip in which a latter sound accidentally also occurs earlier than it should in a word or phrase
Anticipation
Verbal slip in which an earlier sound is also accidentally retained in a later prosition. ex "big bilch" when "big belch" was intended
Preservation
Dyslexia in which language users subsitute synonyms or words phonologically similar to those that are intended
Deep dyslexia
Dyslexia in which speakers struggle to read unfamiliar or nonsense words aloud
Phonological dyslexia
Dyslexia in which speakers have trouble reading words with irregular spellings
Surface dyslexia
Damage to the brain causes a person to lose the ability to read. AKA Alexia