“Correlation is a statistical technique that can show whether and how strongly pairs of variables are related” (Creative Research Systems, 2010). Correlation research method is used in scientific research to study the association and/or relationship between variables. When the association between two variables becomes correlation coefficient, it is being calculated through quantitative measure. The goal for using this method is to observe if one or more variables cause and predict other variables, without having a causal relationship between them (Creative Research Systems, 2010).
One great article I found is about money and happiness: “Can Money Buy Happiness: Are Lottery Winners any Happier in The Long Run?” At first people see how happy and ecstatic people that win the lottery are on television, however, past that point, there are no details on how their life is from there on. The question of whether they are happier or not still remains. The researchers developed the study by asking two paralyzed accident victims, a control group and lottery winners about their level of happiness. “There was no statistically significant difference between the lottery winners and the control group with respect to how happy they were at this stage of their lives” (Brikman, 1978). The control group as well as the lottery winners did not give any “evidence” of how happy they are going to be in couple of years (statistically insignificant). The lottery winners did not think, judge or be concerned about how happy they will be in few years, as the accident victims did. The results were that the relationship between money and the level of happiness is not linear. The increase of money might or might not increase your happiness (depends on the events). “These findings may also suggest that happiness may be relative. We may not be able to reach a higher level of happiness as a result of winning the lottery. Winning the lottery may simply raise our standards” (Brikman, 1978).
Researchers may use correlational method to determine variables between characteristics, attitudes, behaviors and events. As I mentioned before, the goal of this method is to find out if there is a direct relationship between the variables, as well as any commonalities in each relationship. Even though it does not indicate the cause and effect relationship, when it’s present, one variable might reflect the change of the other variable. The only way a researcher would find out the effects a variable has on another variable is through research and experiment (Wiley, 2011).
When it comes to using correlational method, to develop research, causation must not be used, because it cannot prove that one variable can change the other. The method only shows, in a systematic way that the variables are related. To be able to prove the cause and effect relationship and experimental method must be used. In this case, being that it cannot test the cause and effect, the result can be deceiving and misinterpreted, especially when there are more than two variables involved. When cause and effect cannot be proved through this method, assumption is done, which leads to error in the outcome. Therefore, as mentioned before, correlation does not mean causation, which is a limitation when it comes to conclusions to be made (Bradley, 2000).
Positive correlation occurs when the increase of one variable impacts the increase of another variable. For example, the more money people win, the happier they are, however it does not specify long term results. Being that they are happy for the moment, the more times they win, the happier they get, which results in a positive correlation. When it comes to negative correlation, the variables work the opposite: when one increases it impacts the other one to decrease. In the example above, I would say that people that win the lottery also have a lot more responsibilities to handle, which occurs in more effort, time and...