SOLVED4834

A researcher makes the following prediction for their research: “Melatonin supplements will cause improved sleep quality.” Which of the following is the most suitable operational definition (operationalization) of the dependent variable in this study? doctor’s reports of overall health and pre-existing physical conditions • self-reports of prior and current sleep aid use • EEG reports of the number of hours spent in uninterrupted sleep self-reports of sleep disruption, sleep onset, and insomnia administration of 1 supplementary melatonin pill per night, prior to sleep onset
SCIENCE
HEALTH SCIENCE
NURSING

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