A leading scientist says the positive thinking technique of manifesting is "intellectually vapid".
Manifestation is a self-help process which states that believing in a positive outcome will make that outcome easier to achieve.
The practice was popularised by Rhonda Byrne's self help book The Secret and has seen a resurgence online.
Dr David Robert Grimes says it inspires unrealistic expectations in people that they can influence events outside of their control.
