Immediately before alpha feedback training, 13 Ss responded to a mood checklist and the Breskin Rigidity Test (measuring preference for perceptual closure). After 2 sessions of alpha training, retests showed significant increases in (a) production of alpha EEG waves, (b) scores for those moods which prior research had shown to be associated with alpha, (c) preference for closure.
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References
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LewisL.SchmeidlerG. R.Alpha-ESP relations after feedback, with nonintentional and purposive ESP. Journal of the American Society for Psychical Research, 1971, in press.