Recommendations for achieving generalized instructional outcomes often overlook the capacity for generative learning. We sought to demonstrate how decontextualized and logically organized instruction would lead to derived and contextually appropriate recombinative generalization and arbitrarily applicable relational responding (AARRing) in…

Grounded in the biopsychosocial models of expressive language in autism spectrum disorder (ASD) and fragile X syndrome (FXS), this dissertation included two novel studies that examined the role of biological (i.e., physiology), psychological (i.e., autistic traits, anxiety symptoms, and child affect) and social (i.e., communication partner…

Assessing higher-level verbal repertoires of individuals with autism and related intellectual disabilities is crucial due to the language and cognitive deficits experienced by this population as well as is the need for valid assessment tools for data-driven and individualized treatment. In addition to, curricula or instructional protocols that…

While federal policies such as NCLB, IDEA, and ESSA have placed increased accountability on states to deliver instruction aligned to the grade-level mathematics standards for all students, teaching functional skills to students with significant intellectual disabilities remains a predominant practice. The purpose of this study was to explore…

Intelligence tests and adaptive behavior scales measure vital aspects of the multidimensional nature of human functioning. Assessment of each is a required component in the diagnosis or identification of intellectual disability, and both are frequently used conjointly in the assessment and identification of other developmental disabilities. The…

Transition education and services play a significant role during the transition from school to adulthood for individuals with intellectual disability (ID). The main objective of this study was to investigate to what extent secondary special education teachers of ID feel prepared to implement and deliver transition education for middle and high…

Previous research has indicated that the classification of intellectual disability (ID) may negatively impact interpretations of the cognitive performance of children with ID, especially for general-education teachers. However, there are some findings that suggest that these negative effects of classification may be overcome when competing…