Linguistic learners are sensitive to the meanings and sounds of words, and enjoy learning through storytelling, wordplay, and creative writing. Spatial learners process visual cues well and enjoy creating and studying visual art such as pictures, maps, puzzles, or diagrams. Bodily-Kinesthetic learner communicate meaning and feeling through creative dramatics, athletics, and physical movement such as gestures and dancing. Interpersonal learners function well in a group setting, often as leaders, and are aware of the feelings and behaviors of others. Intrapersonal learners understand clearly their own feelings and motivations, and are usually self-motivated and independent.
Naturalist learners analyze, categorize, and make use of the different features of the environment.
We don't know of any single test you can give your son to figure out which learning style he has. In fact, you probably don't want to place him in one category or another. Most children have not one learning style, but strengths in several. You can find many clues to your son's learning style in your own observations. You may also want to compare notes with your child's teacher.