evidence: Survey development and validation [...] Parker K, Horowitz J, Igielnik R, Oliphant B, Brown A. America’s complex relationship with guns: an in-depth look at the attitudes and experiences of U.S. adults. Pew Research Center. June 22, 2017. 2017. [...] Research participants consented to participate in the survey and provided permission for their answers to be included in the publication of the results.