This is precisely what must be avoided. Concentration involves effort, and effort involves tension - which negates psychic receptivity. And of course there are certain psychoactive drugs which produce altered states of consciousness in which psychic ability may be heightened. It is merely to help boost your psychic levels for the duration of our tests. If you want to learn advanced techniques of psychic development you will need to take one of our courses .
Tension impedes the flow of psychic energy like a knot in a hosepipe impedes the flow of water.
Remember, your first impressions are more likely to be correct. The experience of obtaining information psychically is subjectively the same as that of recalling facts that you already know. Lastly, don't be afraid to get it wrong. The more often you use and rely on your psychic abilities, the stronger they will become. As with any other talent or ability, ESP improves with regular practice.