Hypnosis and time estimation

Bayliss, David John (1977). Hypnosis and time estimation Honours Thesis, School of Psychology, The University of Queensland.

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Author Bayliss, David John
Thesis Title Hypnosis and time estimation
School, Centre or Institute School of Psychology
Institution The University of Queensland
Publication date 1977
Thesis type Honours Thesis
Open Access Status Not Open Access
Supervisor Peter Sheehan
Total pages 98
Language eng
Subjects 17 Psychology and Cognitive Sciences
Formatted abstract
The study aimed to test two hypotheses suggested by Doob (1971): (1) that, for hypnotized subjects, time awareness in an interval filled with suggested events should be like that in an interval filled with actual events and unlike that in an empty interval and (2) any effects on time awareness for hypnotized subjects should be attributable to hypnosis rather than to confounding variables such as positive motivation or hypnotic susceptibility. 72 subjects pretested for susceptibility were assigned to a 3 X 2 X 3 (suggestibility instructions X susceptibility X time  estimations) factorial design and were individually tested. The suggestibility instructions were hypnosis, task motivated and control (imagination). Susceptibility levels were high and low as measured by the HGSHS:A. Time estimations was a repeated measure and the three conditions required subjects to imagine a walk, watch a film, and keep their minds blank. The method of production was employed with a nominated interval of two minutes. A variety of measures of cognitive activity was also made. The first hypothesis was confirmed except that the shortest durations were produced in the mind blank interval. The second hypothesis was not confirmed and susceptibility appeared to be a more relevant variable than hypnosis or motivation. The measures of cognitive activity emphasized the distinctive nature and complexity of each time estimation condition. The findings were explained in terms of the cognitive effort required by the various groups of subjects in the different time estimations. In particular,  the mind blank interval was interpreted as the interval requiring the greatest cognitive effort. The measures of cognitive activity generally supported the cognitive effort interpretation.
Keyword Hypnotism
Time perception

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
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