A chief requirement
of a meta-analysis is to conduct a very thorough literature search.
To this end, the APA Psychological Abstracts, Dissertation
Abstracts International, and ERIC databases from 1974 to 1994 were searched for
relevant articles. The reference lists from the obtained studies and
several major reviews (e.g., DeGroh, 1989; Nadon, Laurence, & Perry,
1991; 1992; Roche, & McConkey, 1991) were searched for additional
material. Journals known for publishing hypnosis related articles (e.g.,
American Journal of Clinical Hypnosis, Journal of Abnormal Psychology,
Journal of Personality and Social Psychology, and the International
Journal of Clinical and Experimental Hypnosis) also were examined for
research that may have been missed by the other search procedures.
Finally letters requesting any additional material on this topic were
sent out to most of researchers who have published material relating
to hypnotic susceptibility and absorption.