This dissertation has two areas of focus: learning and developmental disorders (LDDs) and polyfluoroalkyl chemicals (PFCs). Epidemiological and exposure assessment methods are applied to each. The first paper used geographic location as a surrogate for exposure and broadly assesses the effect of the environment, both physical and social, on LDD…

In 1983, Massachusetts passed a law mandating that developmentally disabled students applying to state colleges and universities did not have to take standardized admission tests. An evaluation of the law's effectiveness and implementation indicates that other states should consider possible ramifications and confer with all concerned parties…