Mukherjee also criticises the IQ test as a measure of intelligence, and endorses the theory of multiple intelligences (introduced by Howard Gardner) over general intelligence. He argues that the results of IQ tests for determining general intelligence do not represent intelligence in the real world. Reviewing the book in The Spectator, Stuart Ritchie, a psychologist at the University of Edinburgh, remarked that Gardner's theory is "debunked" and that "general intelligence is probably the most well-replicated phenomenon in all of psychological science."[65]