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circadian rhythm

any periodic variation in physiological or behavioral activity that repeats at approximately 24-hour intervals, such as the sleep–wake cycle. Also called diurnal rhythm. Compare infradian rhythm; ultradian rhythm. See also biological rhythm.

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Psychology term of the day

April 26th 2024

research protocol

research protocol

the complete description of one’s outline or plan for conducting a study. It should be as detailed as possible, including elements such as the research hypothesis to be addressed and the rationale for doing so; the materials and resources that will be required; the timeline or duration; the precise sampling, measurement, and analysis procedures that will be used; a discussion of any ethical considerations; and a description of strengths and limitations.