I remember reading something related to this in late 90's. It made me feel better about myself.
"A peer-reviewed scientific journal study (Behavior Therapy 26, 681-694, 1995), conducted by Kent State University, 1995 (Lori L. Oliver, Gordon C. Nagayama, Richard Hirschman) was conducted on a sample of normal (adult attracted) male volunteers using the "penile plethysmograph"."