Double blind - a test procedure in which the identity of those receiving the intervention is concealed from both the administrators and the subjects until after the test is completed; designed to reduce or eliminate bias in the results attempt, effort, try, endeavor, endeavour - earnest and conscientious activity intended https://analisisdepuestodetrabajo67780.worldblogged.com/42774928/análisis-de-puesto-de-trabajo-ergonomía-cosas-que-debe-saber-antes-de-comprar