I get exactly what Jpatt is saying and I agree with him. There is a huge psychological part at play whether communication is successful at that time or whether it's the ideomoter effect....I think skeptics as well as believers can at least agree on this?
In the mind of the skepticEven for the person who does not believe that spirit entities or energies can be invited forward by the use of a ouija board, they will most likely experience 'something' during a session that leads to questioning things. It could be a trust issue over those they sit with, it could be feelings of anxiety in the back of their minds that they find difficult to ignore, for example -
"nothing can really happen here right, it's all a bunch of toss, isn't it? --- isn't it???" err well perhaps in the moment the skeptic suddenly thinks "what if there is something to this, something that I don't understand?" --- could be something they were unprepared to hear or deal with themselves or that of another member of the group, that challenges their view/beliefs. When this happens it can leave a person suddenly feeling vulnerable
In the mind of the believerFor the believer, and I would like to specifically refer here to the 'naive' believer, then the psychological implications can be pretty big.... For example, blindly believing whatever the messages say and who they are from and getting pulled under the control of the communicator can quickly result in a sort of dependency. For that person it can lead to any rational thought/control going out the window and questions becoming along the lines of "does ***X really love me, is ***X cheating on me, will I pass that exam, will I get that job". In other words what started out as 'lighthearted' changes into something very serious for that person which is exactly the kind of vulnerability that lowlevel conehead spirits are looking to exploit and mess with.
The bottom line is yes it's a mind game for all involved, be it for the skeptic, the believer and the lowlevel spirits that wanna play. I have seen these scenarios over and over again through my extensive experiences of doing ouija boards. Often things get on a very deep and personal level and you never quite know how it may affect everyone in the group. Someone may be going through a really hard time or have a lot of unanswered questions, issues that people bring to the table may well come pouring out.
Finally, another thing that should be mentioned. There's more psychologically than what happens in the heat of the moment with the comfort/safety of the group around. Paranoia can be a risk in the days or weeks that follow. Paranoia can lead to bad dreams, nightmares, states of anxiety. What paranoia causes can also be confused for being haunted, which just becomes a cycle feeding itself...
So back to Jpatt's comment, Anyone who is of a state of nervous, fearful, anxious, vulnerable, unstable or unbalanced mind (and that includes being under the influence of drugs/ alcohol) should really just stay away from ouija board. Those with unresolved issues looking for answers should absolutely just stay away from ouija boards full stop!! it's not the place for getting serious life answers!
I've added my guideline that i tend to stick in every ouija thread as they pop up

I'm well aware that no matter how much you give reasons for not doing it, some people will still want to do it and will do so. There is no 100% safe way but this provides an idea of do's and don'ts

1. Your expectations can influence your experience. As can your mood and the people you chose to do the ouija board with. Don't take part if you can't trust the group, don't take part if you really don't want to. There's still roles people can have if they don't want to take part directly such as scriber ( keeping a written record of the letters and words) this is an important role because it can be easy to lose track of what was said. Sometimes you need to see the written word to make sense of it, not all spirits spell english well...it also allows you to google words you don't know the meaning of.
The bottom line is if it's going to keep you awake all night scared out of your wit then just don't have anything to do with it. Fearful emotions and ghosties are not a good mix....
2. Never assume that a spirit is someone you know or who they say they are. Treat it like you do the internet when chatting to strangers, be aware that it could be anyone sitting behind the name and what they tell you may not be the truth. If you saw someone called 'George Bush' or 'The Devil' in a chat room or site such as this one you wouldn't believe it really was, would you? if your answer to this is yes then please don't go near a ouija board, it's NOT a game for the gullible or naive.... It has it's entertainment value and that is all, keep things light and casual and don't rely on the ouija board for making important life decisions.
3. Be careful of what you ask, questions such as does ***X really love me or is ***X cheating on me or 'will I pass my exam' is not a great idea. Firstly no spirit has the ability to know such things other than those who may guide you or know you. They can't predict things and they don't automatically have access to every knowledge of your lives. Remember treat them as you would strangers on the net, but always with respect. I've seen good friends lose friendships because of questions like these. Think before you put forward a question, is it worth an upset or friendship? (will explain more on this later)
4. Be aware of the expectations of the spirit. They are not there to perform circus acts for you, so don't request silly things of them. Most spirits will want to talk about themselves and as far as they're concerned it's their opportunity to be heard, you must respect that. If the thought of this doesn't appeal to you then don't bother taking part. Some spirits may be troubled/distressed and looking for help, what they say may not be very nice, be prepared for that. If at anytime it gets uncomfortable tell them you sympathise with them but aren't the right people to help them. Gently ask them to return to where they came from and say goodbye.
5. Never ask if there is 'anyone' out there. You may not realise the power of such an open invite. If you ask in that manner then the chances of getting a low level or negative spirit is greatly increased. These type of spirits will mess around and tell you porkies. They are begging for the attention and energy and usually achieve this via fear. These are the ones that will spell 'die' out or tell you they are satan etc or that something bad will happen. If you end up with one of those, don't play into their hands, don't believe them, just tell them firmly to go back to where they came from and end the board session.
6. Before you start the oujia board, as a group take a couple of mins holding hands and Imagine a bright white circle of light come round the group. Ask that this light serves to protect you and
only allows those of the highest positive realms to come in. Make your request certain that only those of good energy and light are allowed to come in.
7. When you are finished, Thank them and tell them to return to where they came from. Make them take you over the goodbye.
To end the session, join hands again and visualize the circle of bright white light, ask that the circle be closed taking any remaining energy with it.