Additive strategies are decision making methods in which all possible options or variables are weighed or given a score (good or bad) and then compared to each other in order to make a decision. A pro and con list is a type of additive strategy- a list is made with options and qualities rated as a pro (good) or a con (bad) . Then the number of traits in the pro and con columns are compared and the one with the most should be the better decision. Options are measured and then cumulatively weighed against each other to make a decision.