Influences of Subject Self-Selection on the EEG Alpha-Hypnotizability Correlation |
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Authors: | Roland A Dumas Sherry E Spitzer |
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Institution: | Langley Porter Institute, University of California Medical Center, San Francisco |
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Abstract: | To determine the effect of subject self-selection on the alpha-hypnotizability correlation, the correlations between volunteer and invited subject groups were compared. For 8 volunteers the correlation between baseline eyes-closed occipital alpha and the Harvard Group Scale of Hypnotic Susceptibility score was r=.72; for 12 invited subjects, that correlation was r=-.02. The significant difference in these correlations gives support to a previously published paper which hypothesized, on the basis of a literature review, that sampling modifications generated by subject self-selection were responsible for the occurrence of significant alpha-hypnotizability correlations. |
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Keywords: | EEG alpha Hypnotizability Volunteer bias |
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