Studies in Washington State show that home visits from trained staff can reduce child abuse, improve children’s quality of life and physical and mental health, and reduce child-welfare and litigation costs. A dollar spent on this program produces benefits of $14, making it a highly cost-effective policy.
显而易见，某些解决方法很有效果。加强社会服务可以减少儿童暴力案件。华盛顿州研究显示由训练有素的工作人员家访可以减少虐童案件，改善儿童的身心健康和生活质量，降低儿童福利和诉讼成本。该项目上每投入1美元可以产出14美元效益，这项政策因此成本效益很高。