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2.2: The Scientific Process

  • Page ID
    221615
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    Learning Objectives
    • Explain how scientific research and the scientific method are used to address questions about behavior

    The goal of all scientists is to better understand the world around them. Psychologists focus their attention on understanding behavior, as well as the cognitive (mental) and physiological (body) processes that underlie behavior. In contrast to other methods that people use to understand the behavior of others, such as intuition and personal experience, the hallmark of scientific research is that there is evidence to support a claim. Scientific knowledge is empirical: It is grounded in objective, tangible evidence that can be observed time and time again, regardless of who is observing.

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    Process of Scientific Research

    Flowchart of the scientific method with eight stages. It begins with make an observation, then ask a question, form a hypothesis that answers the question, make a prediction based on the hypothesis, do an experiment to test the prediction, analyze the results, prove the hypothesis correct or incorrect, then report the results. If the Hypothesis is incorrect, you return to stage three (form a hypothesis that answers the question) and repeat process from there.
    Figure \(\PageIndex{1}\): The scientific method is a process for gathering data and processing information. It provides well-defined steps to standardize how scientific knowledge is gathered through a logical, rational, problem-solving method.

    Scientific knowledge is advanced through a process known as the scientific method. Basically, ideas (in the form of theories and hypotheses) are tested against the real world (in the form of empirical observations), and those empirical observations lead to more ideas that are tested against the real world, and so on.

    The basic steps in the scientific method are outlined below:

    • Observe a natural phenomenon and define a question about it.
    • Make a hypothesis, or potential solution to the question.
    • Test the hypothesis.
    • If the hypothesis is true, find more evidence or find counter-evidence.
    • If the hypothesis is false, create a new hypothesis or try again.
    • Draw conclusions and repeat—the scientific method is never-ending and no result is ever considered perfect.

    In order to ask an important question that may improve our understanding of the world, a researcher must first observe natural phenomena. By making observations, a researcher can define a useful question. After finding a question to answer, the researcher can then make a prediction (a hypothesis) about what he or she thinks the answer will be. The hypothesis is usually a statement about the relationship between two or more variables. After making a hypothesis, the researcher will then design an experiment to test his or her hypothesis and evaluate the data gathered. This data will either support or refute the hypothesis. Based on the conclusions drawn from the data, the researcher will then find more evidence to support the hypothesis, look for counter-evidence to further strengthen the hypothesis, revise the hypothesis and create a new experiment, or continue to incorporate the information gathered to answer the research question.

    Four stage repeating cycle: Theory, Hypothesis, Research, and Observation. You use the theory to form a hypothesis. Then you design a study to test the hypothesis. This leads to the research stage. Then you perform the research which yields an observation. You then use that observation to create or modify the theory. This takes you back to the theory stage, and the process repeats.
    Figure \(\PageIndex{2}\): The scientific method of research includes proposing hypotheses, conducting research, and creating or modifying theories based on results.
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    Link to Learning

    Want to participate in a study? Visit this Psychological Research on the Net website and click on a link that sounds interesting to you in order to participate in online research.

    Glossary

    empirical: grounded in objective, tangible evidence that can be observed time and time again, regardless of who is observing

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