 IIT has also been denounced by other members of the consciousness field as requiring “an unscientific leap of faith” .The theory has also been come down on for failing to answer the basic questions required of a theory of consciousness.Philosopher Adam Pautz says “As long as proponents of IIT do not address these questions, they have not put a clear theory on the table that can be evaluated as true or false.” 

Influential philosopher John Searle has given a critique of theory saying "The theory implies panpsychism" and "The problem with panpsychism is not that it is false; it does not get up to the level of being false.