Differing standards for assessing need and evaluating results. Some researchers used statistical methods for evaluating treatment effectiveness to discourage bloodletting. A long process of evaluating systems and developing possible solutions followed. Researchers are currently evaluating approaches to improve ways to treat mastocytosis. Intervention studies are yet another method of evaluating construct validity. The first round considered with preliminary evaluating of principles. The Roundtable's early work focused on working through the challenges of evaluating complex community initiatives. Object permanence is considered to be one of the earliest methods for evaluating working memory. Numerous studies have shown FAST is useful in evaluating trauma patients. Various rankings mostly evaluating on institutional output by research. There are decision tools and questionnaires which help guide physicians in evaluating alcohol withdrawal. Packaging also refers to the process of designing, evaluating, and producing packages. However, in the meantime, most other NATO countries were evaluating and selecting the FAL. EP stands for evaluating products and enhancing productivity. Claude Shannon proposed formal criteria for evaluating chess moves in 1949.