Group Penile Plethysmography

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Kazrin, A. & Durac, J. (1983) Group penile plethysmography: An apparatus for clinical research. Behavior Therapy, 14, 714-717. 


The present paper presents a novel apparatus that permits the simultaneous assessment of sexual (penile plethysmographic) arousal in groups of male subjects. The apparatus, referred to as the Group Research Observation Instrument for large Numbers (GROIN), is described and illustrated. Its utility for clinical research, particularly for large-scale investigations of arousal is proposed. Limitations of the apparatus, more apparent than real, are also discussed.