The Use of Breathing Rhythm to Enhance the Vividness of Mental Imagery

Abstract

The study assessed Jencks' claim that responses to certain suggestions are enhanced by being paced with different phases of the breathing cycle. Following hypnotic induction, twenty-four subjects were given four treatments in counterbalanced order: 1) exhalation-enhanced suggestions paced to exhalation, 2) inhalation-enhanced suggestions paced to inhalation, 3) inhalation-enhanced suggestions counterpaced to exhalation, and 4) exhalation-enhanced suggestions counterpaced to inhalation. Subjects' reports of imagery vividness provided marginal support (p < .06) for Jencks' hypothesis. Post-experimental inquiry indicated subjects were unaware of the breathing contingency. Results suggest that appropriate pacing may make a greater difference for the energy-confidence group of suggestions (inhalation-paced) than for the calm-relaxation group (exhalation-paced).

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