Bücher der Reihe Advances in Parapsychological Research

Montague Ullman The second volume of this series includes essays on methods and issues in ESP research (Morris), research findings in ESP (Palmer), and theories of psi (Rao).

The history of humankind cannot be charted as a steady linear upward slope but rather as a series of quantum jumps of short duration separated by plateaus of varying duration during which no progress occurred.