The theory of multiple intelligences was first proposed by Howard Gardner in 1983 on his book Frames of Mind: The Theory of Multiple Intelligences. In this book, he broke intelligence down into eight categories. The modalities are:
1) Musical-rhythmic and harmonic
2) Visual-Spatial
3) verbal (linguistic)
4) logical mathematial
5) Kinesthetics
6) interpersonal
7) intrapersonal
8) naturalistic
9) existential
Not to mention in a recent interview Gardner is considering adding on the modality of teaching pedagogical as the last modality.