Annals of sex research

, Volume 3, Issue 4, pp 381–396 | Cite as

Detecting faked penile responses to erotic stimuli

A comparison of stimulus conditions and response measures
  • Robert D. Card
  • William Farrall


Eighteen men were instructed to fake penile responses to discrete sexual stimuli presented auditorily or visually. The same stimuli were presented a second time following instruction on faking. Sexual responses were monitored using a penile plethysmograph (PPG). Further physiological response measures to detect faking attempts included the Galvanic Skin Response (GSR) and respiration (RESP). Faking attempts were found to be more successful to audio than visual stimuli, especially if the stimuli were relatively weaker. Arousal was much more difficult to fake than suppression. The more intense the efforts to fake, and especially following faking instructions, the more transparent the faking efforts. GSR and RESP added measurably to the detection of faked PPG responses which would have appeared otherwise to be genuine responses.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Farrall, W.R., & Card, R.D. (1988). Evaluation of assessment and treatment of the sexual aggressor. In R.A. Prentky & V.L. Quinsey (eds.).Human sexual aggression: Current perspectives, p.528, New York: The New York Academy of Sciences.Google Scholar
  2. Freund, K. (1971). A note on the use of the phallometric methods of measuring mild sexual arousal in the male.Behavior Research & Therapy, 2, 223–228.Google Scholar
  3. Hall, G.C.N., Proctor, W.C., & Nelson, G.M. (1988). The validity of physiological measures of pedophilic sexual arousal in a sexual offender population.Journal of Consulting and Clinical Psychology, 56, 118–122.PubMedGoogle Scholar
  4. Henson, D.E., & Rubin, H.B. (1971). Instructional control of eroticism.Journal of Applied Behavior Analysis, 4, 37–44.Google Scholar
  5. Quinsey, V.L. & Bergerson, S.G. (1976). Instructional control of penile circumference in assessments of sexual preference.Behavior Therapy, 7, 489–493.Google Scholar
  6. Quinsey, V.L. & Chaplin, T.C. (1987). Preventing faking in phallometric assessments of sexual arousal. Unpublished manuscript.Google Scholar
  7. Rosen, R.C. (1973). Suppression of penile tumescence by instrumental conditioning.Psychosomatic Medicine, 35, 509–514.PubMedGoogle Scholar

Copyright information

© Juniper Press 1988

Authors and Affiliations

  • Robert D. Card
    • 1
  • William Farrall
    • 2
  1. 1.Clinic for Counseling & Psychotherapy, Inc.Salt Lake City
  2. 2.Farrall Instruments, Inc.Grand Island

Personalised recommendations