During previous centuries, many children witnessed adult sex in their homes:

D’Emilio, J. and E. Freedman. Intimate Matters: A History of Sexuality in America (3rd edition). University of Chicago Press, Chicago, 2012, p. 17.

The near-universality and general harmlessness of childhood sex play:

Ford, CS and FA Beach. Patterns of Sexual Behavior. Harper & Row, NY, 1951.

Okami, P et al. “Sexual Experiences in Early Childhood: 18-Year Longitudinal Data for the UCLA Family Lifestyles Project,” Journal of Sex Research (1997) 4:339.

Greenwald, E. and H. Leitenberg.” “Long-Term Effects of Sexual Experience with Siblings and Non-Siblings During Childhood,” Archives of Sexual Behavior (1989) 18:389.

Kilpatrick, A.C. “Some Correlates of Women’s Childhood Sexual Experiences: A Retrospective Study,” Journal of Sex Research (1986) 22:221.

Lewis, R. and L.H. Janda. “The Relationship Between Adult Sexual Adjustment and Childhood Experiences Regarding Exposure to Nudity, Sleeping in the Parental Bed, and Parental Attitudes Toward Sexuality,” Archives of Sexual Behavior (1988) 17:349.

Laarsson, I.B. and C.G. Svedin. “Sexual Experiences in Childhood: Young Adults’ Recollections,” Archives of Sexual Behavior (2002) 31:263.

Reynolds, M.A. “The Development of Sexuality: The Impact of Childhood Sexual Play on Adult Sexuality,” Ph.D. dissertation, 1997. http://search.proquest.com.ucsf.idm.oclc.org/docview/619258931?accountid=14525.

“If you’re old enough to want sex, you’re old enough to have it.”

Levine, J. Harmful to Minors 33.

The rarity of kiddie porn:

Lawrence, S. “The Child Porn Myth,” Cardozo Arts and Entertainment Law Journal (1989) 7:295.

Densen-Gerber’s Congressional testimony:

S. House Judiciary Committee. “Sexual Exploitation of Children: Hearings Before the Subcommittee on Crime,” 95th Congress, first session, 1977, pp. 42-48.

Densen-Gerber, J. and S.F. Hutchinson. “Sexual and Commercial Exploitation of Children,” Child Abuse and Neglect (1979) 3:61.

Densen-Gerber’s disgrace:

Levine, J. Harmful to Minors 33.

Suppression of Show Me!

https://en.wikipedia.org/wiki/Show_Me!

Los Angeles Times review of Show Me!

“Is America Ready?” LA Times, March 9, 1975.

Statistics about sentencing for kiddie porn:

http://famm.org/wp-content/uploads/2013/09/FS-Intro-to-Child-Porn-8.22.13-fixed.pdf

The McMartin Preschool case:

https://en.wikipedia.org/wiki/McMartin_preschool_trial

Megan’s Laws

Levine, J. Harmful to Minors 42.

Childhood abduction statistics:

https://www.ncjrs.gov/pdffiles1/ojjdp/196465.pdf

Recidivism rates, non-sex crimes:

Cooper, A.D., et al. “Recidivism of Prisoners Released in 30 States in 2005: Patterns From 2005 To 2010.” Bureau of Justice Statistics (2014)

http://www.bjs.gov/index.cfm?ty=pbdetail&iid=4986

Recidivism rates, sex crimes:

Przybylski, R. “Adult Sex Offender Recidivism,” Chapter 5 of the Office of Criminal Justice Programs’ Sex Offender Management Assessment and Planning Initiative. (2004)

http://www.smart.gov/SOMAPI/sec1/ch5_recidivism.html

Hanson, RK and MT Bussiere. “Predictors of Sexual Offender Recidivism: A Meta-Analysis,” Journal of Consulting and Clinical Psychology (1996) 66:2.

Justice Dept. 2002 missing children report

http://www.missingkids.com/publications/PDF23a

National Sexual Health Survey, University of California, San Francisco

http://www.socio.com/pet0204.php

The parent-child sex education books I reviewed:

Bailey, J. and J. McCafferty. Sex, Puberty, and All That Stuff: A Guide to Growing Up. Barron’s Educational, NY, 2004.

Brown, L.K. and M. Brown. What’s the Big Secret? Talking About Sex with Girls and Boys. Little Brown, NY, 1997.

Cole, J. Asking About Sex and Growing Up: A Question-and-Answer Book for Kids (revised edition). HarperCollins, NY, 2009.

Harris, R.H and M. Emberley. It’s Perfectly Normal: Changing Bodies, Growing Up, Sex, and Sexual Health. Candlewick Press, Somerville, MA, 2014.

Madaras, L. with A. Madaras. The “What’s Happening to My Body?” Book for Boys. William Morrow, NY, 2007.

Madaras, L. with A. Madaras. The “What’s Happening to My Body?” Book for Girls. William Morrow, NY, 2007.

Mayle, P. Where Did I Come From? Lyle Stuart, NY, 1973.

Planned Parenthood, Mar Monte. Let’s Talk About Sex (2nd edition). Book Peddlers, Minnetonka, MN, 2005.

Schiffer, H.B. How To Be the Best Lover: A Guide for Teenage Boys. Heartful Loving Press, Santa Barbara, CA, 2004.

Embryonic cells that become the penis in boys become the vulva and clitoris in girls.

https://www.goodreads.com/book/show/727822.The_Clitoral_Truth

Women are much less likely than men to have orgasms.

Richters, J. et al. “Sexual Practices at Last Heterosexual Encounter and Occurrence of Orgasm in a National Survey,” Journal of Sex Research (2006) 43:217.

Salisbury, C.M.A. and W.A. Fisher. “’Did You Come?’ A Qualitative Exploration of Gender Differences in Beliefs, Experiences, and Concerns Regarding Female Orgasm Occurrence During Heterosexual Sexual Interactions,” Journal of Sex Research (2014) 51:616.

Wade, L.D. et al. “The Incidental Orgasm: The Presence of Clitoral Knowledge and the Absence of Orgasm for Women,” Women and Health (2005) 42:117.

Only 25 percent of women are consistently orgasmic from penis-vagina intercourse.

E. The Case of the Female Orgasm: Bias in the Science of Evolution. Harvard University Press, Cambridge, MA, 2005.

Richters, J. et al. “Sexual Practices at Last Heterosexual Encounter and Occurrence of Orgasm in a National Survey,” Journal of Sex Research (2006) 43:217.