Incest (English Wikipedia)

A large-scale study of (n = 3,000) by the UK's National Council for the Prevention of Cruelty to Children found that fathers committed about 1% of child sex abuse, while siblings committed 14%. See BBC News Online: Health, Child Abuse Myths Shattered, November, 20, 2000 Archived 2 August 2020 at the Wayback Machine
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OED Ancrene Riwle (c. 1225) has Incest‥is bituȝe sibbe fleschliche, where either the generic or the narrow sense may be intended. See also inetymonline.comest Archived 13 September 2014 at the Wayback Machine

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This article incorporates text from a publication now in the public domain: Singer, Isidore; et al., eds. (1901–1906). "incest". The Jewish Encyclopedia. New York: Funk & Wagnalls.

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Laviola, M. (1992). "Effects of older brother-younger sister incest: A study of the dynamics of 17 cases". Child Abuse and Neglect. 16 (3): 409–421. doi:10.1016/0145-2134(92)90050-2. PMID 1617475.
Cyr, M.; Wright, J.; McDuff, P.; Perron, A. (2002). "Intrafamilial sexual abuse: Brother-sister incest does not differ from father-daughter and stepfather-stepdaughter incest". Child Abuse and Neglect. 26 (9): 957–973. doi:10.1016/S0145-2134(02)00365-4. PMID 12433139.
Bittles, A. H.; Black, M. L. (26 January 2010). "Consanguinity, human evolution, and complex diseases". Proceedings of the National Academy of Sciences. 107 (suppl 1): 1779–1786. doi:10.1073/pnas.0906079106. PMC 2868287. PMID 19805052.
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