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Social Studies, 25.01.2020 05:31 kekeke68

In a study on the effects of caffeine on memory, participants drank a bottle of tasteless water containing 100, 50, or 0 milligrams of caffeine. neither the researcher who handed out the bottled water nor the study participants knew whether the water contained caffeine or not. this is an example of a
1) correlational study
2) case study
3) single-blind procedure
4) double-blind procedure

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