The original study, published in the February issue of Consumer Reports, was aimed at discovering how infant seats performed in tests at speeds that match those used in the government’s New Car Assessment Program (NCAP). This program tests most new vehicles in crashes at speeds of 35 mph for frontal impact and 38 mph for side impact. Child safety seats, in contrast, are currently tested only in front-impact crashes at speeds of 30 mph. Our tests were intended to simulate side crashes at the NCAP speed of 38 mph. The new information raises a question about whether the tests accurately simulated that speed, however, so we are now reviewing our tests and the resulting article.