That some individuals are exceptionally intelligent in mathematical ability but have great difficulty understanding social interaction, lends support to which theory of intelligence?

This can either be Louis Thurstone's Primary Mental Abilities or Howard Gardner's Multiple Intelligence. Both can support this premise because it illustrates that intelligence is not general unlike the theory proposed by Charles Spearman. In Thurstone's and Gardner's theories, a person can e intelligent in one aspect and not on another. This is because there are multiple areas of intelligence and it is not rarely possible for a person to excel in every area.