REFERENCES
- Zietsch , B. P. , Miller , G. F. , Bailey , J. M. and Martin , N. G. 2011 . Female orgasm rates are largely independent of other traits: Implications for “female orgasmic disorder” and evolutionary theories of orgasm . Journal of Sexual Medicine , 8 : 2305 – 2316 .
- Zietsch , B. P. and Santtila , P. 2011 . Genetic analysis of orgasmic function in twins and siblings does not support the by-product theory of female orgasm . Animal Behavior , 82 : 1097 – 1101 .