Does precognition foresee the future? Series 2, a laboratory replication and series 3, a World Wide Web replication

An earlier postal experiment by Steinkamp (2000) examined whether true prec ognition was possible by comparing 2 conditions. In the clairvoyance condit ion, targets were selected by a pseudorandom number generator before partic ipants did the trials at home; in the true precognition condition, targets were selected using an algorithm on prespecified stock market and temperatu re figures on a prespecified future date. It was thought unlikely that part icipants could use either psychokinesis or other real-time psi to perform s uccessfully in the true precognition condition. Results were significant in the clairvoyance condition (p = .04, one-tailed) and only at chance in the true precognition one. The difference in performance between the 2 conditi ons was significant (p = .01, one-tailed). This article presents 2 replicat ion studies using different settings. The Ist, in the laboratory, gave almo st significantly high scores in the precognition condition (p = .06, two-ta iled) but only chance scores in the clairvoyance condition, with no signifi cant difference between the 2 conditions. The 2nd, conducted over the World Wide Web, produced scores tending toward psi missing in the precognition c ondition (p = .08, two-tailed), chance scores in the clairvoyance condition , and an almost significant difference between the 2 conditions (p = .07, t wo-tailed). Differences are discussed.