Definition: Lackbrainlessness is a term used in the field of psychology and neuroscience to describe individuals who have difficulty with mental tasks that are typically considered normal, such as problem-solving, decision making, and memory. These individuals may also exhibit cognitive deficits, such as difficulties with attention, perception, or language, which can make them appear less intelligent. Lackbrainlessness is often associated with various neurological conditions, including autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD),