1. Introducing SLA of phonology research: Major fields of research

2. 1.Maturational constraints age age maturation vs. development maturation vs. development critical vs. sensitive period for acquisition critical vs. sensitive period for acquisition

3. 2.Individual and social constraints motivation motivation social acceptance and social distance social acceptance and social distance personality variables personality variables sex sex oral and auditory capacities oral and auditory capacities

4. 3.Perception and production of L2 speech sounds construction of new perceptual categories construction of new perceptual categories production of new sounds: articulatory targets, plans, transfer; feedback vs. preprogramming in production production of new sounds: articulatory targets, plans, transfer; feedback vs. preprogramming in production developmental interrelation of perception and production developmental interrelation of perception and production

5. 4.Developmental interrelation between first and second language speech acquisition product and process product and process the influence of L1 structure the influence of L1 structure the identification of L2 and L1 elements the identification of L2 and L1 elements processing strategies and L1 structural influence processing strategies and L1 structural influence the developmental dimension the developmental dimension the role of universal typological preferences the role of universal typological preferences sociolinguistic and stylistic determinants sociolinguistic and stylistic determinants phonology: explanations and implications phonology: explanations and implications