first, determine whether the research is experimental or correlational. If it is experimental, identify the independent and dependent variables, as well as the experimental and control groups. If it is correlational, indicate the direction of the correlation. A cognitive researcher is interested in whether the ability to perform simple math problems changes with age. He tests over 300 people of various ages ranging from 20- 80 years on a standardized math test. A researcher is interested in whether caffeine can improve learning. She assigns one group to drink 3 12 oz. Cokes while studying the night before the test. Another group is instructed to drink the same amount of caffeine-free Coke during the same time. She then compares the test scores of the groups. Researchers have discovered that the more cigarettes a person smokes, the bigger the risk that person has of dying from lung cancer.
first, determine whether the research is experimental or correlational. If it is experimental, identify the independent and dependent variables, as well as the experimental and control groups. If it is correlational, indicate the direction of the correlation.
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A cognitive researcher is interested in whether the ability to perform simple math problems changes with age. He tests over 300 people of various ages ranging from 20- 80 years on a standardized math test.
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A researcher is interested in whether caffeine can improve learning. She assigns one group to drink 3 12 oz. Cokes while studying the night before the test. Another group is instructed to drink the same amount of caffeine-free Coke during the same time. She then compares the test scores of the groups.
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Researchers have discovered that the more cigarettes a person smokes, the bigger the risk that person has of dying from lung cancer.
Correlational Research:
Correlational research is a type of research method in which the researcher observes two naturally occurring variables to establish a statistical relationship between them. The aim of such a method is to identify the different variables that have relation to an extent that one creates a significant change in the other.
Experimental Research:
Experimental research is a type of research method which strictly adheres to a scientific research design. The method includes hypotheses, variables that can be manipulated and controlled by the researcher and is completed in a controlled environment.
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