All the following are the major categories of psychological disorders except _ _ _ _ .

Step-by-step solution

Autism spectrum disorder, Attention Deficit Hyperactivity Disorder, and Intellectual disability are classified primarily as neurodevelopmental disorders, which are a major category of psychological disorders according to standard diagnostic manuals like the DSM-5. Alzheimer's disease, however, is fundamentally categorized as a neurocognitive disorder, primarily involving progressive neurodegeneration and loss of cognitive functioning, usually affecting older adults. While it has profound psychological impacts, it i