ABSTRACT
Although a variety of evidence points to genetic determinants of Asperger’s
disorder, some work points to environmental determinants in the phenotype of
autism spectrum disorders (ASDs). Importantly, environmental contributions
such as behavior programs are effective in modifying the expression of
impairment (Chap. 14) (1). A study of how such environmental factors may
impact the genotypic determination of phenotype reveal complex interactions
that may provide valuable insights into etiology.
