25. See, e.g., David Finkelhor, Child Sexual Abuse: New Theory and Research (New York: Free Press, 1984); L. M. Williams and David Finkelhor, "The Characteristics of Incestuous Fathers," in ed. W. Marshall, D. R. Laws, and H. Barbaree, The Handbook of Sexual Assault: Issues, Theories, and Treatment of the Offender (New York: Plenum Publishing, 1989).
26. Friedrich's 1992 comparison between sexually abused and non-abused children found that abused kids act out sexually with greater frequency than other kids do, but both groups do all the same sexual things. William N. Friedrich and Patricia Grambsch, "Child Sexual Behavior Inventory: Normative and Clinical Comparison," Psychological Assessment 4 (1992): 303-11; Robert D. Wells et al., "Emotional, Behavioral, and Physical Symptoms Reported by Parents of Sexually Abused, Nonabused, and Allegedly Abused Prepubescent Females," Child Abuse and Neglect 19 (1995): 155-62. J. A. Cohen and A. P. Mannarino, "Psychological Symptoms in Sexually Abused Girls," Child Abuse and Neglect 12 (1988): 571-77; R. J. Weinstein et al., "Sexual and Aggressive Behavior in Girls Experiencing Child Abuse and Precocious Puberty," paper presented at the annual convention of the American Psychological Association, New Orleans, 1989.
27. Many researchers have decried the lack of systematic collection of data and their paucity on this subject. Nevertheless, all the data there are support my statement, and none contradict it. See, e.g., Friedrich, "Normative Sexual Behavior in Children"; William N. Friedrich et al., "Normative Sexual Behavior in Children: A Contemporary Sample," Pediatrics 101, no. 4 (April 1998), e9; William N. Friedrich, Theo G. M. Sandfort, Jacqueline Osstveen, and Peggy T. Cohen-Kettensis, "Cultural Differences in Sexual Behavior: 2-6 Year Old Dutch and American Children," Journal of Psychology and Human Sexuality 12, nos. 1-2 (2000): 117-29; Allie C. Kilpatrick, Long-Range Effects of Child and Adolescent Sexual Experiences: Myths, Mores, Menaces (Hillsdale, N.J.: Lawrence Erlbaum, 1992); Sharon Lamb and Mary Coakley, "'Normal' Childhood Sexual Play and Games: Differentiating Play from Abuse," Child Abuse and Neglect 17 (1993): 515-26; Floyd M. Martinson, The Sexual Life of Children (Westport, Conn.: Bergin and Garvey, 1994); Paul Okami, Richard Olmstead, and Paul R. Abramson, "Sexual Experiences in Early Childhood: 18-Year Longitudinal Data for the UCLA Family Lifestyles Project," Journal of Sex Research 34, no. 4 (1997): 339-47; Jany Rademakers, Marjoke Laan, and Cees J. Straver, "Studying Children's Sexuality from the Child's Perspective," Journal of Psychology and Human Sexuality 12, nos. 1-2 (2000): 49-60; and sources at note 32.
28. Friedrich et al., "Normative Sexual Behavior in Children" (1998).
29. Johnson, "Behaviors Related to Sex and Sexuality in Preschool Children."
30. J. Attenberry-Bennett, "Child Sexual Abuse: Definitions and Interventions of Parents and Professionals," Ph.D. dissertation, Department of Education, University of Virginia, 1987.
31. Okami, Olmstead, and Abramson, "Sexual Experiences in Early Childhood."
32. Evan Greenwald and Harold Leitenberg, "Long-Term Effects of Sexual Experiences with Siblings and Nonsiblings during Childhood," Archives of Sexual Behavior 18, no. 5 (1989): 389. Similar results were reported in Harold Leitenberg, Evan Greenwald, and Matthew J. Tarran, "The Relation between Sexual Activity among Children during Preadolescence and/or Early Adolescence and Sexual Behavior and Sexual Adjustment in Young Adulthood," Archives of Sexual Behavior 18, no. 4 (1989): 299 ff.
33. Martinson's informants related stories of intercourse, fellatio, and anal intercourse, as well as more "childish" practices of looking and mutual masturbation.
34. Clellan S. Ford and Frank A. Beach, Patterns of Sexual Behavior (New York: Harper and Row, 1951), 197, 188.
35. Cunningham and MacFarlane, When Children Abuse, 28.
36. Theo Sandfort and Peggy Cohen-Kettensis, "Parents' Reports about Children's Sexual Behaviors," paper presented at the Twenty-first Annual Meeting of the International Academy of Sex Research, September 1995.
37. Friedrich et al., "Normative Sexual Behavior in Children" (1998).
38. Okami, "'Slippage' in Research in Child Sexual Abuse."
39. Lamb and Coakley, "'Normal' Childhood Sexual Play and Games." This finding, it should be noted, troubled the authors.