The study of communication and its disorders often involves coding several behaviors and examining the proportions with which individual behaviors are produced within data sets. Problems are encountered when studying multiple behaviors between data sets, because of the interdependence of the proportions: as one coded behavior increases, at least…

Purpose: Obtaining information on both languages of English language learners for assessment can be a challenge in a multilingual context. It is often difficult or impossible to observe a child's first language directly due to the absence of resources available in every language spoken. The objectives of this study were (1) to develop a parent…