Factor Analysis and Score Distributions of the HIP — Replication by a Second Examiner

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Abstract
Most of the previously reported data regarding the Hypnotic Induction Profile (HIP) have been collected by a single examiner, Herbert Spiegel, one of the authors of the test. The present study was an attempt, employing a second examiner (B.D., an office associate of H.S.), and a sample from a similar population, to replicate HIP score distributions and the original factor analysis. Subjects were consecutive private psychiatric patients (N = 735), none of whom were subjects in the original investigations. Results were positive: factor analyses and score distributions were remarkably similar in the two samples. Not only were the overall score distributions replicated, but age effects on the scores in the original data were nearly duplicated in the present data.

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