"The theory of spiritual intelligence is in the early stages of development and understandably controversial. Two psychologists, John Mayer (2000) and Howard Gardner (2000), disagree with the concept albeit for different reasons. Mayer proposes that spirituality is heightened consciousness rather than an intelligence, and that the paradigm of intelligence is too limiting because spirituality is more than abstract reasoning, a core feature of intelligence. Further, he does not distinguish spiritual intelligence from spirituality itself. Gardner, on the other hand, disputes the concept of spiritual intelligence in part because it cannot be supported by experimental psychological investigations or psychometric findings, two of his criteria for distinguishing an independent intelligence."