Dr. Alderson’s research interests are in the area of clinical child psychology and developmental psychopathology. His research takes a two-pronged approach to studying potential core deficits/endophenotypes of Attention-Deficit/Hyperactivity Disorder (ADHD) by: (1) re-examining extant models (behavioral inhibition), and (2) contributing to the development and refinement of nascent models (working memory and ADHD related variability). Results from this line of research challenge prevailing views concerning the central role of behavioral inhibition deficits in ADHD, and provide support for working memory as a candidate core deficit of the disorder. More recent research examines the functional relationship between specific phonological and visuospatial working memory subsystem components, and tertiary symptoms such as poor academic achievement, impulsivity, and hyperactivity.