Final answer:
Motor-skill memory is not a commonly recognized subdivision of memory; verbal, spatial, and sensory memories are typical categories used to classify cognitive abilities.
Step-by-step explanation:
The subdivision of memory that is not generally acknowledged as a category of human cognitive abilities is Motor-skill. When considering different classifications of memory and intelligences, the terms verbal, spatial, and sensory are regularly used. Verbal memory involves the storing and recall of information in a language form, spatial memory refers to the ability to retain and process information about the environments and spatial orientation, while sensory memory holds sensory information for brief periods. Motor skills, though related to learning and the brain, are not usually classified as a type of memory but rather as a type of learned sequences of movements.