This thesis is about strong island effects and intervention effects. Strong island effects are contexts where operator-variable dependencies cannot be established. The paradigmatic cases of strong island violations in Chinese occur in "why"-questions. This thesis explores a basic contrast: "why"-questions fail to be interpreted…

The rise of causality and the attendant graph-theoretic modeling tools in the study of counterfactual reasoning has had resounding effects in many areas of cognitive science, but it has thus far not permeated the mainstream in linguistic theory to a comparable degree. In this study I show that a version of the predominant framework for the formal…

Research findings concerning verb-level influences on past-tense morphology carry implications for the careful selection of treatment targets. Using 6 of the broad criteria for "good verbs to choose" proposed by D. Crystal (1985) more than 25 years ago as a framework, this article summarizes some of the more recent research with a nod…

Provides an overview of current research on grammatical, phonological, semantic, and pragmatic development in African American English child language, as opposed to adult or adolescent language, and discusses the implications of these findings for professionals involved in second-dialect instruction, speech-language assessment, or intervention…