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Examples Of Confirmation Bias

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According to Holman, Lanfear, Head, and Jennions (2015) “scientific progress rests on reliable data, yet data collection is often subjective. Subjectivity can create biases, many of which derive from cognitive and sensory biases common to us all” (p. 1). They agree with Nickerson (1998) that “confirmation bias ensures that we preferentially detect, focus on, and recall outcomes that confirm our beliefs” (Holman, Lanfear, Head, and Jennions, 2015, p. 1). Due to this, when scientists research a subject they interpret the results through the eyes of their opinions. Holman et al (2015) asserts that this bias affects not just the data collection, but the study as a whole (p. 1). For example, in the case of medication testing, an experimenter may …show more content…

189). He states that understanding confirmation bias is vital, since “it can have significant consequences in many nonlaboratory contexts” (Nickerson, 1998, p. 190). There are numerous situations in which confirmation bias can be born from, two of the deadliest are fear and hope. An example of confirmation bias born from hope can be found when looking at those who are extremely ill. These individuals hope for a mystical cure and when they research a professed miracle treatment, they only take in the information that proves it to be true. In these instances, both fear and hope motivate confirmation bias, they fear death and hope for life. The witch hunts in the 15th, 16th, and 17th centuries act as an example for confirmation biases created by fear (Nickerson, 1998, p. 191). During those times, tens of thousands of people were killed because others believed them to be practicing witchcraft (Nickerson, 1998, p. 191). Due to this false belief, people would see certain acts and claim that they were evidence that witchcraft was occurring. They would also disregard any evidence proving the contrary. These two examples are of confirmation bias born from strong emotions, each of which can have devastating results if left …show more content…

He is in agreement with Tuchman (1984) that “’once a policy has been adopted and implemented, all subsequent activity becomes an effort to justify it’” (p. 191). They state that this is a form of confirmation bias. Policy makers only look at cases in which the policy is or could be a success, and they ignore instances where it falls short. Confirmation bias can also have an effect on medicine. Nickerson (1998) quotes Boorstin (1985) in saying: “For 1500 years the main source of European physicians’ knowledge about the human body was not the body itself … [but] the works of an ancient Greek physician [Galen]. ‘Knowledge’ was the barrier to knowledge. The classic source became a revered obstacle” (p. 192). This illustrates that the acquisition of some amount of information does not mean that the pursuit of knowledge should be halted, instead, it should be continued. These physicians only paid attention to the instances when patients were healed after a specific treatment, allowing them to continue to believe their knowledge of physiology was enough (Nickerson, 1998, p. 192). Medical practitioners ignored evidence that proved that they needed to further understand the human body due to the fact that they were comfortable in the knowledge passed down from Galen. Confirmation bias halted to exploration of the human body and the advancement of medicine for nearly two thousand

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