Learning Breakthrough

When the cognitive paradigm became dominant, inattention became the focus of ADHD, and disorder was renamed attention deficit disorder (ADD). Two subtypes would later appear in the literature, which correspond to ADD with or without hyperactivity. The diagnostic nomenclature reflects the notion that the primary problem was an attentional (and thus, cognitive) one and not primarily behavioral. The attentional problems had to do with the ability to shift attention from one stimulus to another (something that Jonah Lehrer has called an attention-allocation disorder, since it isn’t really a deficit of attention). The hyperactivity symptoms were also reformulated as cognitive: connected with an executive processing deficit termed “freedom from distractibility.”