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  The Unprecedented Research Study from Rutgers University

  Study Overview

"Male Multiple Ejaculatory Orgasms: A Case Study"
Journal of Sex Education and Therapy
Volume 23, Number 2
(C) Copyright 1998

Funded by a grant from the Foundation for the Scientific Study of Sexuality and conducted January 15, 1995 at Rutgers University, College of Nursing, this unprecedented study scientifically documented the existence in one male of a multiorgasmic response pattern previously undocumented.

This study was subsequently published in the Journal of Sex Education and Therapy (Vol. 23, No. 2; pp. 157-162), 1998.

Read key excerpts from the published Study here


Journal of Sex Education and Therapy (Vol. 23, No. 2)


  Six Natural, Fully Ejaculatory Orgasms in 36 Minutes - on the same erection

Study Protocols, Parameters, and Procedures

The study was conducted by having the male Research Subject sit in a chair facing an infrared pupilometer.  The pupilometer was attached to a framework with a chinrest.  A blood pressure cuff was attached to one arm, and a pulse monitor to the large toe of the left foot.  Eight numbered, sterile specimen containers were placed within easy reach of the Subject for use in separately collecting each ejaculation.  A TV and VCR were also present in the small room, operated by the Subject via remote control.  The Subject was alone in the room, observed at all times by the Rutgers researchers via a window from an adjoining room.  Additionally, instrument and sensor readings were gathered by the researchers from this location.

Every two minutes throughout the study, the blood pressure cuff would inflate automatically.  At each inflation of the cuff, the Subject was expected to place his chin in the chinrest of the pupilometer, audibly stating his perceived level of arousal from 0 to 10, then remain still as his pupil diameter was recorded.  This exacting set of understandably distracting procedures was also repeated at each orgasm, with the added procedure of requiring the Subject to also collect each ejaculation in the appropriate separate container.

That the Subject was capable of performing at all was remarkable, given the necessary procedures required of him.  In his own words, here is a brief excerpt of his own recollections of the study:  

"The procedures required by the experiment proved to be just as distracting as I had anticipated.  The pressure from the inflation of the blood pressure cuff on my arm every two minutes became progressively more uncomfortable as the continual breaks in concentration to use the pupilometer and declare the appropriate arousal number became more distracting.  These inconveniences coupled with other difficulties, including a faulty VCR, made for additional distractions, which took up the majority of the first 30 minutes to correct.  Despite these difficulties, I was ultimately able to concentrate sufficiently on the video I had prepared to exhibit the multiorgasmic response pattern I was there to document. 

"However, the most uncomfortable aspect of the entire experiment was by far the climate within the room itself, which, without air conditioning, quickly grew almost unbearably hot and stuffy.  Of all the inconveniences, it was this which finally caused me to call a halt to the proceedings after only about an hour.

"By the sixth orgasm, the heat and humidity within the small room was stifling.  With sweat rolling down my face and stinging my eyes, I let the researchers know that it was just too uncomfortable to continue.  Following another 10-minute period, during which time I rested as my physiological readings continued to be monitored, the door was finally opened allowing some relief from the oppressive heat and humidity."

During the study, the 35 year-old male Subject -- despite the distraction of attached instrumentation, required verbal feedback, and the absence of a female partner -- experienced six natural and fully ejaculatory orgasms within a 36-minute timespan with no decrease in erection or ability to continue.  (In other words, with no male refractory period in evidence.)  No voluntary techniques of any kind were employed nor was the ejaculatory process interfered with or interrupted in any way.  No substances, special regimens, exercises nor diets were employed.  According to the male Subject of this study, he has always possessed such a capacity (since early childhood).

Click here to view a graph of the Study biometrics  






The ejaculate volume results of our study are as follows:

The only other study on male "multiple" orgasm to also document ejaculate volume was the Kothari Study (1989), wherein a male Subject was monitored as he coincidentally also experienced six ejaculatory orgasms. The key difference between the two studies being that the Kothari Subject admittedly used ejaculatory-control techniques so as to keep from experiencing full orgasm (i.e., full, uninterrupted ejaculation). As the Rutgers Subject does not experience a refractory period following full orgasm, no such inhibitory techniques were needed or used.

This fact is additionally verified by comparing the Kothari ejaculate-volume data side-by-side with the same data acquired in this Rutgers Study: 

Here, unlike the ejaculate volumes of the Kothari Study, the first ejaculation of this study dwarfs in volume that of the Kothari Subject, clearly indicating that full ejaculation has taken place.  And yet, four minutes later, a second orgasm and ejaculation occurs.  Though the ejaculate volume of the subsequent orgasms is greatly diminished (which is to be expected, as the greater volume is usually expelled during the first full ejaculation), it is the volume of the first which proves the Subject's claims that no ejaculatory control techniques are employed, yet no refractory period is in evidence.

NOTE:  It is important to recognize that the low subsequent ejaculate volumes (Orgasms 2 - 6) are not at all indications of either decreased orgasmic experience or diminished intensity of pleasure.  Volume of ejaculation in natural male orgasm will vary dependent upon two major factors, only:  volume of accumulated semen present in the seminal vesicles, and degree of arousal prior to orgasm. 

Additionally, both the Kothari Subject and the Rutgers Subject ejaculated a total volume of only about one millileter variance between them.


And thus, for the first time in history, an adult male is scientifically documented experiencing one full natural orgasm after another without interruption, without withholding ejaculation, and yet without any evidence of a Male Refractory Period (MRP), thereafter.


Read selected quotes and highlights from the Study.

A reprint of the Study (published in the Journal of Sex Education and Therapy; Vol. 23, No. 2) can be ordered through the American Association of Sex Educators, Counselors, and Therapists (AASECT).  ad the entire STUDY here




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