First language (L1, mother tongue, or native language)
= The language(s) a person learned first, as a child growing up
Second language (L2)
= A language learned after initial L1 acquisition (includes third, fifth, …)
Second Language Acquisition (SLA or L2A)
= The study of how people learn a language other than their mother tongue, inside or outside a classroom
Bilingual L1A
= The study of the simultaneous acquisition of two languages from birth
Basic questions and research areas in SLA
1) What exactly does the L2 learner come to know?
→ Linguistics (= The scientific study of a language)
2) How does the teacher best convey this knowledge?
→ Teaching English as a Foreign Language (TEFL)
3) Why are some learners more successful than others?
→ Applied Linguistics (= The study of language-related real-life problems in specific situations in which people use and learn languages)
Cross-linguistic influence
L2 learners are subject to an influence that is absent from FLA: the L1
Transfer
= The process whereby a feature or rule from a learner’s L1 is carried over to his/her L2
Positive transfer
= When an L1 structure or rule is used in an L2 utterance and that use is appropriate in the L2
Negative transfer
= When an L1 structure or rule is used in an L2 utterance and that use is inappropriate in the L2
Interlanguage (IL)
= A system of mental representations influenced by the first and target language (L2) that has features of both
L1 ___ I …Interlanguage… I ___ Target language (L2)
Ultimate goal of L2 acquisition
Learners should acquire the communicative competence that involves:
L2 morphological development
L2 morpheme order studies indicated that the order of morpheme acquisition is largely consistent across different groups of L2 English learners (→ There is a natural order of L2 morphological development regardless of L1 and age.)
Typical developmental sequence for FLA
L2 English:
L1 vs. L2 morphological development
Although not identical, the order of morpheme acquisition is systematic in L1 and L2.
Concept of ‘Natural Order’ and SLA
–> Universal Grammar (UG)
Universal Grammar (UG)
1) Verb movement parameter
= A verb marked for tense raises/does not raise to T (i.e., the head of tense phrase).
E.g.: English → [-verb movement] vs. French → [+verb movement]
2) Null subject parameter
= The subject of a clause with a verb marked for tense
may/may not be null.
E.g.: English → [-null subject] vs. Spanish → [+null subject]
L2 syntactic development
1) Initial state
2) Intermediate states
3) Subset Principle
4) Feature reassembly
5) Ultimate attainment
6) Factors affecting fossilization
1) Initial state
= L2 learners already have knowledge of L1 at the point where SLA begins, so they may transfer L1 parameter settings into the interlanguage grammar in the initial stages of L2 syntactic development
2) Intermediate states
= L2 learners reset the parameter settings when the L2 input they receive does not match the L1 settings they have
Full Transfer Full Access Hypothesis
3) Subset Principle
4) Feature reassembly