Learning, as demonstrated in different ways in this study (below) and in the unrelated image displayed (right), sometimes leads to fulfillment.
“Sexual Practices at Last Heterosexual Encounter and Occurrence of Orgasm in a National Survey,” Juliet Richters, Richard de Visser, Chris Rissel and Anthony Smith, Journal of Sex Research, August 2006, vol. 43, no. 3 pp. 217–26. (Thanks to Kristine Danowski for bringing this to our attention.) The authors write: “The associations between orgasm and demographic characteristics suggest a social class effect, with better-educated, non-immigrant women more likely to have orgasms.”