There are many different theories as to why and how an Ouija board works. Psychologists and skeptics explain it as a simple type of muscle reflex that makes your hand automatically move and your subconscious mind control the words that are spelled out. This action is often called the "ideomotor effect". It is an unconscious motor action that is the result of suggestion or expectation and attributed to not only the action of Ouija boards, but also to table tipping and dowsing. There of course is no strong evidence to back up these claims, but we must still remain open minded to the fact that an Ouija board may not in fact be a way of communicating with sprits.
