“A number of investigations have shown that the analytic, intellectual mind of the civilized adult is peculiarly resistant to all types of paranormal cognition. One of the most recent researches is that of Robert and Henie Briar, who tested several samples of people belonging to a society called Mensa: here the sole qualification for membership is an IQ within the top two percent of the population. In all tests of ESP their average score was significantly -less- than that expected by chance. Incidentally this type of research emphasizes the fact that the absence of successful guesses is not necessarily just a negative result: it is always important to note the occurrence of a disproportionate number not only of ‘psi-hits’, but also of ‘psi-misses'”

— R. and H. Brier, “ESP experiments with high-IQ subjects”, ap. J. B. Rhine and R. Brier, Parapsychology Today, 1968)