Observational Studies

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Observational Studies versus Experiments Statistics is an incredibly important and useful tool. Through statistics, people are able to learn a multitude of findings, including the benefits of certain lifestyles and products. However, the accuracy of a study's results is effected by the way it is conducted. A study can be performed as an observational study, where individuals are observed, but not influenced by researchers, for their responses, or as an experiment, where researchers deliberately influence individuals before recording their responses. Both methods can produce usable results, but articles have been written about observational studies being the lesser of the two. In the first article, "Overstating Aspirin's Role in Breast Cancer …show more content…
One survey, conducted as an observational study, was conducted in order to determine if owning a pet had any direct link to a child's health. Over 2,000 families with cats or dogs and over 2,000 families without pets were surveyed. The parents, who each had at least one child between ages 5 and 11, were asked if their child had been diagnosed with ADHD and if they had any concerns about their child's mood or behavior. After every survey was concluded, the researchers found that the families with pets "were in better health and tended to be more physically active than children...without [pets]" (Sandoiu). The researchers also determined that children with pets were more likely to be diagnosed with ADHD, but their parents were not likely to be concerned with their children's mood or behavior. These results are able to convey the positive aspects of conducting observational …show more content…
Researchers from the University Hospital Bonn conducted a series of experiments in order to determine if oxytocin, a bonding hormone, could decrease a person's xenophobic tendencies. The first part of the study was used as a control, a donation task, for 183 subjects, where 25 people were locals in need and 25 people were refugees. Next, 100 participants were asked about their attitudes towards refugees. Half of the group was given a nasal spray of oxytocin and the other half were given a placebo. After that, a second experiment was conducted, which was exactly like the first one, except that the participants were told the average donation made by their peers. The researchers were able to uncover a myriad of results from their experiments. The first experiment showed that, due to oxytocin, those who had a positive attitude about refugees gave donations double that of those in the control group. However, the hormone did little to change the attitudes of those who were against refugees. The second experiment showed that "even people with negative attitudes towards migrants donated up to 74 percent more to refugees than in the previous round" (Universität Bonn) due to the combination of oxytocin and positive peer pressure. By simulating numerous trials, the experiment was able to produce thorough and accurate