Abstract

Many parapsychological writers have suggested that psi may be capricious or actively evasive. The evidence for this includes the unpredictable, significant reversal of direction for psi effects, the loss of intended psi effects while unintended secondary or internal effects occur, and the pervasive declines in effect for participants, experimenters, and lines of research. The term unsustainable is applicable because psi is sometimes impressive and reliable, but then becomes actively evasive. One of the most testable models for this property is that psi effects occur against a background of supporting and opposing motivation and psi influence due to the extreme polarization of attitudes toward psi in the population. These attitudes may have genetic and gender associated components. Another possible explanation is that the primary function of psi is to induce a sense of mystery and wonder. Other possible functions of psi also need to be investigated. For example, psi could contribute to evolution by briefly influencing random processes to enhance diversity, without specifically guiding evolution or having sustained effects. Some type of higher consciousness may influence or control psi effects.