Empirical scientific evidence refers to the evidence that one experiences. The approach is based on scientific research, and it entails gaining knowledge through direct or indirect observation (Birkland, 2014). A researcher can analyze empirical evidence by qualitative and quantitative methods. For instance, the researcher can quantify the evidence or make use of its qualitative form to answer the empirical questions. Researchers consider scientific evidence empirical because it is based on the observation of the person performing the study and it is provable.

Conversely, anecdotal evidence refers to the evidence you get from someone else meaning that it has not been verified. This evidence is collected in an informal manner and relies on the testimony of a person. Moreover, the evidence is based on a story. It is used to explain the problems that a policy may have (Birkland, 2014). Information provided does not qualify to be considered scientific because of its nature bars researchers from using scientific approaches to carry out the investigation.

Anecdotal evidence is more useful in studying public policy because it provides a good explanation to a claim. Moreover, citing Birkland (2014), the evidence offers a good strategy in policy debate. Since people like to hear good stories, anecdotal evidence is a useful evidence in policy debate because it gives people motivation to believe in a particular manner.

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