This monograph develops a weak deterministic
model of language acquisition that can accommodate
first language (L1) acquisition, language change, and
second language (L2) acquisition: namely the
Economical Parameter-Setting model. This model is
achieved by adopting the notion of economy employed
in the theory of Universal Grammar (UG) developed in
the Minimalist Program (Chomsky 1995) and by
modifying a pre-minimalist model of language
learnability and language change developed by Clark
and Roberts (1993).

The main claims are that the processes of L1
acquisition and L2 acquisition are...