Multiple intelligences is a useful fiction in that it enables scholars to go beyond mere data-crunching of mental testers.
Multiple intelligences is problematic in that gardner's selection and application of criteria for his 'intelligences' is subjective and arbitrary, and a different researcher would likely have come up with different criteria.
Multiple intelligences is wrongheaded in that it is tautological... as such, having a high musical ability means being good at music while at the same time being good at music is explained by having a high musical ability.
Multiple intelligences is wrongheaded in that gardner is simply using the word 'intelligence' where other people have traditionally used words like 'ability' and 'aptitude'.
Multiple intelligences is an approach to intelligence that encourages teachers to individualize teaching styles and to teach important materials in multiple ways.
Multiple intelligences is problematic insofar as it goes against a tradition which has always sensibly limited the definition to the kind of thinking skills that makes one successful in school.
Multiple intelligences is divided into the eight categories (plus two more) of: (1) musical-rhythmic intelligence (2) visual-spatial intelligence (3) verbal-linguistic intelligence (4) logical-mathematical intelligence (5) bodily-kinesthetic intelligence (6) interpersonal intelligence (7) intrapersonal intelligence (8)naturalistic intelligence (9) existential intelligence (10) moral intelligence.