The association between firearm ownership and homicide has been shown to be specifically related to homicides involving intimate partners and other domestic relations. Prior research has shown that firearms are commonly used in parricide, and in particular parricides perpetrated by youth. This study examined whether higher levels of firearm ownership are associated with increased rates of parricide, and whether this association was stronger among youthful offenders. We used a longitudinal design and negative binomial regression to model parricide as a function of household firearm ownership at the state level using data from the Federal Bureau of Investigation’s Supplementary Homicide Reports from 1981 through 2018. There were 8,916 parricide perpetrators in the study sample, and nearly half used a firearm (47.7%). Whereas parricides committed by adults involved firearms in 43.5% of cases, almost two-thirds (64.8%) of parricides committed by youth involved firearms. Each 1-percentage point increase in state-level household firearm ownership was associated with a 1.5% increased incidence of parricide (95% CI = [0.6%, 2.4%], p = .001). Moderation analyses revealed that the association between state-level firearm ownership and parricide was between 2.6- and 3.6-fold stronger for incidents perpetrated by youth relative to adults. Reducing youth access to firearms in the context of conflictual parent–child relations represents one strategy for reducing parricide.

枪支所有权与凶杀案之间的关联已被证明与涉及亲密伴侣和其他家庭关系的凶杀案特别相关。先前的研究表明，枪支通常用于弑父，尤其是由青年犯下的弑父行为。这项研究检查了较高水平的枪支拥有是否与弑亲率增加有关，以及这种关联在年轻罪犯中是否更强。我们使用来自联邦调查局 1981 年至 2018 年的补充凶杀报告的数据，使用纵向设计和负二项式回归将杀戮行为建模为州一级家庭枪支拥有量的函数。研究样本中有 8,916 名杀戮者，并且近一半使用枪支（47.7%）。在 43.5% 的案件中，成年人实施的弑父案涉及枪支，而青少年弑父案中近三分之二 (64.8%) 涉及枪支。州级家庭枪支拥有量每增加 1 个百分点，弑亲事件的发生率就会增加 1.5%（95% CI = [0.6%, 2.4%]，p  = .001)。适度分析显示，与成年人相比，青少年所犯事件的州级枪支所有权与杀戮之间的关联要强 2.6 到 3.6 倍。在冲突的亲子关系背景下减少青少年获得枪支是减少弑亲事件的一种策略。