Poverty of the Stimulus Stands: Why Recent Challenges Fail1

This chapter re-examines the Poverty of the Stimulus (POS) problem. Several researchers have recently claimed that the POS argument can be deflected without resort to an 'innate schematism'. It is shown that all these recent arguments fail, and the reasons why these failures occur are discussed. The chapter concludes that the POS argument and its support for the availability of a priori structure dependence in the child stands, and that investigation of the POS question within standard approaches of the natural sciences yields interesting results and opens important questions for inquiry.