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Tidfors et al  compared a group of adolescent sibling incest offenders (n=21) compared to a group of adolescent non-sibling offenders (n=24). Comparisons were made regarding variables such as family dysfunction, the offenders' prior victimization and offending behaviour. The data were collected from intake assessment reports and semi-structured interviews . The sibling incest offender group had grown up more often in dysfunctional families. Moreover, the results indicated that the offending behaviour in the sibling incest group was more severe.
- ↑ Inga Tideforsa, Hans Arvidssona, Sara Ingevaldsona & Michael Larssonb (2010). Sibling incest: A literature review and a clinical study. Journal of Sexual Aggression.Volume 16, Issue 3