NCBI ROFL: For some reason, women don't volunteer for vaginal photoplethysmographs.

By ncbi rofl | September 3, 2010 7:00 pm

sex_researchVolunteer bias in erotica research: effects of intrusiveness of measure and sexual background.

“Volunteer characteristics and volunteer rates across several laboratory experiments of sexual arousal were compared. Conditions were created to assess which component of the experimental setting was responsible for low volunteer rates in experiments using genital measurement. Subjects were 324 male and 424 female undergraduate students who had volunteered for an experiment on sexuality and personality. After completing several measures of sexual experience and attitude, subjects received a written description of one of the following conditions and were asked if they wished to volunteer: sexual film, sexual film and subjective rating of arousal, sexual film and assessment through forehead temperature, sexual film and assessment with a device that was placed over the clothes and measured genital heat flow, sexual film and assessment with the heat flow device while partially undressed, or sexual film and assessment with the vaginal photoplethysmograph or penile strain gauge while partially undressed. Men were significantly more likely to volunteer than women, and volunteer rates for both men and women decreased significantly when and only when subjects were required to undress. Multivariate analyses of variance revealed that both male and female volunteers were more sexually experienced, reported more exposure to erotic materials, and worried less about their sexual performance than nonvolunteers. No differences in volunteer characteristics occurred across the increasingly intrusive conditions for women while a few differences occurred for men. The present findings suggest that researchers should be cautious about discussing the generality of findings of studies involving exposure to a sexually explicit film alone as well as of experiments that involve self-report or physiological measures of sexual arousal.”


Related content:
Discoblog: NCBI ROFL: What kind of erotic film clips should we use in female sex research? An exploratory study.
Discoblog: NCBI ROFL: For some reason, med students don’t want to show their genitals in class.
Discoblog: NCBI ROFL: An electrophysiologic study of female ejaculation.

WTF is NCBI ROFL? Read our FAQ!

  • Joanna Cake

    I guess that’s the same with most volunteering. Those that do tend to be at ease and confident in their performance. I doubt you get many people who know they are bad at something queueing up voluntarily to provide data. So it must naturally skew the results.

    The trouble with confidence is that it can bite you on the bum when you least expect it and are you sure that it was the ‘undressing’ and not the genital intrusion that was the reason people were less likely to step up?

    Here’s an example of what can happen when you do take your clothes off willingly but your equipment lets you down. Enjoy!

  • Greg

    Does anyone know where and when you can volunteer to be studied?


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