Department of Epidemiology, Institute of Social Medicine, University of the State of Rio de Janeiro, Brazil.
Child Abuse Negl. 2011 Aug;35(8):567-73. doi: 10.1016/j.chiabu.2011.04.001. Epub 2011 Aug 17.
Paternity is uncertain, so if paternal feelings evolved to promote fitness, we might expect them to vary in response to variables indicative of paternity probability. We therefore hypothesized that the risk of lapses of paternal affection, including abusive assaults on children, will be exacerbated by cues of non-paternity.
Cross-sectional study of 331 Brazilian mothers, interviewed about 1 focal child (age 1-12) residing with her and the putative father. Child physical abuse was assessed using the Conflict Tactic Scales: Parent Child (CTSPC). Two potential cues of (non) paternity were (1) whether the parents co-resided when the child was conceived, and (2) whether third parties allegedly commented on father-child resemblance. Data were analyzed through multiple logistic regressions.
Mothers reported child physical abuse by 15.9% (95% CI 4.6-27.1) of fathers who had not cohabited with them at conception, compared to 5.9% (95% CI 3.1-8.7) of those who had. The odds ratio for abuse by fathers who had not cohabited at conception in relation to those who had-adjusted for income, education, age, sex of child, whether child was first born, household size, time father spent with child, and alcohol abuse and drug use by father-was 4.3 (95% CI 1.4-13.8). Mothers reported abuse of 7.0% (95% CI 4.0-10.0) of children who purportedly resembled their fathers, versus 8.7% (95% CI 0.2-17.1) of those who did not.
According to maternal reports, not having co-resided at conception quadrupled the chance of child physical abuse by currently co-residing Brazilian fathers. The reported prevalence of abuse was unrelated to reported allegations of father-child resemblance.
父亲身份不确定，因此如果父爱是为了促进适应度而进化的，我们可能会期望父爱会根据表明父亲身份可能性的变量而变化。因此，我们假设，非亲生父亲的线索会加剧父爱丧失的风险，包括对孩子的虐待攻击。
对 331 名巴西母亲进行横断面研究，对与她和假定父亲一起居住的 1 名焦点儿童（年龄 1-12 岁）进行访谈。使用冲突策略量表：父母与子女（CTSPC）评估儿童身体虐待情况。非（亲生）父亲的两个潜在线索是：（1）父母在孩子受孕时是否同住，以及（2）第三方是否据称评论了父女相似性。通过多元逻辑回归分析数据。
与同居的父亲相比，未同居的父亲报告的子女身体虐待率为 15.9%（95%CI 4.6-27.1），而同居的父亲为 5.9%（95%CI 3.1-8.7）。与同居的父亲相比，未同居的父亲的子女遭受虐待的比值比为 4.3（95%CI 1.4-13.8），调整了收入、教育、年龄、子女性别、子女是否为第一胎、家庭规模、父亲与子女相处时间以及父亲酗酒和吸毒情况。母亲报告称，与那些据称与父亲相似的孩子相比，7.0%（95%CI 4.0-10.0）的孩子受到了虐待，而那些不相似的孩子为 8.7%（95%CI 0.2-17.1）。
根据母亲的报告，在受孕时没有同居使目前同居的巴西父亲对子女身体虐待的可能性增加了四倍。报告的虐待发生率与报告的父女相似性指控无关。
