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Purpose of Operational Definitions
A clear operational definition is essential in research because it allows others to understand exactly how and what a researcher is measuring. This precise communication aids other people's ability to accurately interpret the study's data and provides the necessary details for them to repeat or replicate the experiment if they choose to do so.
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Example of Operationalizing a Variable: Learning
Example of an Experimental Procedure: Testing a Teaching Method
A researcher hypothesizes that students who get more sleep will have better memory. To test this, the researcher asks one group of students to sleep for 8 hours the night before an exam and a second group to sleep for 6 hours. The next day, the researcher measures 'memory' by counting the number of correct answers on a 20-question multiple-choice test. Which part of this study description represents the operational definition of 'memory'?
A researcher plans to study the impact of listening to music on a person's mood. Which of the following is the best operational definition for the 'mood' variable in this study?
Operational Definition of Depression
Existing Measure
Creating a New Measure
Perceived Stress Scale
Purpose of Operational Definitions
Converging Operations
Self-Report Measure
Behavioral Measure
Physiological Measure
Which of the following best describes an operational definition in psychological research?